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Jun 28, 2018

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Page 1: Insulationsystems forflatroof - FOAMGLAS · Cellular glass slabs are bonded with ... lular glass insulation had been speci- ... FOAMGLAS® insulation provides an

www.foamglas.se

Insulation systemsfor flat roof

Page 2: Insulationsystems forflatroof - FOAMGLAS · Cellular glass slabs are bonded with ... lular glass insulation had been speci- ... FOAMGLAS® insulation provides an
Page 3: Insulationsystems forflatroof - FOAMGLAS · Cellular glass slabs are bonded with ... lular glass insulation had been speci- ... FOAMGLAS® insulation provides an

Contents

Compact Roof – a promising future 4

Living spaces on the roof 8

Compact Roof, with limited access subject to foot traffic 10

Compact Roof, accessible to foot traffic 13

Green Compact Roof 17

Compact Roof, trafficked 24

Standard Compact Roof (au natural) – with two-layer waterproofing 28

Standard roof structures for accessed roofs 27

Roof systems 31

Economy 35

Preventive fire protection 37

Excellent ecological profile 39

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Compact roof – a promising future

The roof probably is the most important element of theouter skin of a building to provide protection againstweathering. Owners and specifiers alike demand a life-time of high performance. This means: The roof – in par-ticular the flat roof – should provide protection againstcold, heat and rain for the entire service life of the build-ing. This means a roof must last for decades and for gen-erations of owners. It’s clear: Flat roofs have a promisingfuture. The right roof solution ensures lifetime perform-ance without degradation. The optimum system remainseffective in the most demanding situations; it meetsaesthetic, financial and environmental requirements.Compact Roof systems – using the inherent qualities ofFOAMGLAS® cellular glass insulation – are ideal for themost demanding roof situations.

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1 Seebach Center, Zurich2 CSS Insurance Company,

Lucerne3 School for therapeutic

pedagogy, Thun-Steffisburg

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Proven across the world fordecades

In the beginning of the 20th centuryavant-garde architects in Europe gottheir teeth into new building designusing the flat roof. The renownedarchitect Le Corbusier was one of itsmost reputable advocates. In the fiftiesthis roof architecture became widelyaccepted and there are flat roof con-structions performing without failureeven today – many include FOAMGLAS®

Compact Roofs. An average lifetime of40–50 years can be achieved. Theexcellent condition of the oldestFOAMGLAS® Compact Roofs – accord-

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ing to experts – supports the conclusionthat FOAMGLAS® roofs will be effectivefor the next half century.

Unique system integrity – longterm weatherproofing

A flat roof has undeniable advantagesand it offers a new dimension in per-formance and economy. It extends notonly the cubical content but also offersversatility of use for the roof area itself.Choosing a FOAMGLAS® Compact Roofassures best craftsmanship and safeperformance for the long-term; itreduces maintenance and replacementcosts and plays akey part in savingenergy and protecting the environ-ment. No other system can claim simi-lar application possibilities – coveringterraces, rooftop gardens, non-accessi-ble or accessible roofs (e. g. parkingdecks and service decks).

The perfect system

FOAMGLAS® thermal insulation requiresonly a few components to create theCompact Roof: an exceptionally robustand rainproof flat roof construction.Cellular glass slabs are bonded withhot bitumen on to the structural deck.The slabs are pushed into the adhesiveand closely butted, staggered and thejoints filled with bitumen to achieve acompact insulation layer. The water-proofing is then fully adhered to theinsulation surface using hot bitumen.In the FOAMGLAS® Compact Roof alllayers are perfectly bonded to eachother. Water ingress into the roof andinterstitial moisture can be preventedas the insulation itself creates a water-

proof layer. FOAMGLAS® flat roofmeans double the security and lowmaintenance demands.

Design and accurate installationmethod are the key to the outstandingdurability of the FOAMGLAS® CompactRoof. Even if the weatherproofing lay-er becomes damaged, moisture willnot spread across the roof, the insula-tion provides added protection. Anyspecified slope for flat roofs can beachieved by using the FOAMGLAS®

Tapered Roof (a computerized cut-to-fall system) that ensures effectivedrainage and full thermal protection.

Physical properties

Due to its combination of unique prop-erties, FOAMGLAS® is also called “Safetyinsulation”. It is unrivalled in perform-ance. Manufactured from crushed glassand carbon, it forms closed glass cells– containing an inert gas –, which pro-vide excellent thermal effectiveness. Asa high-density insulation the productshows good performance in airbornesound reduction and heat protectionin summer.

Structure Compact Roof

1 Structural deck (for instance:reinforced concrete)

2 Bituminous primer coat3 FOAMGLAS® insulation slabs

(if required: TAPERED RoofSystem)

4 Two-layer bituminouswaterproofing

5 Separating /protection layer6 Finish layer

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4 UBS Bank, Suglio, 19975 UEFA Headquarters, Nyon,

19976 Park Hotel Waldhaus, Flims,

2005

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FOAMGLAS® is totally impervious towater and vapor, it will not absorbwater. An additional vapor barrier isnot required, as the all glass closed cellinsulation fulfills the function to keepmoisture out. FOAMGLAS® possesseshigh compressive strength and is freefrom deformation in the long-term.Further qualities of the glass materialare: non-combustibility and dimensionalstability (no shrinkage, no swelling, nowarping); it is rot, insect, vermin andacid proof. FOAMGLAS® is an environ-mentally sound product and certifiedto standards of health and indoor airquality in buildings.

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1 Waterproof FOAMGLAS® is waterproof because it consists of pure glass. Advantage: doesnot absorb any moisture and does not swell.

2 Pest-proof FOAMGLAS® cannot rot and is pest-proof because it is inorganic. Advantage:insulation without risk, especially in the base area and the soil. No basis for nesting, breedingor seed germination.

3 Compression-proof FOAMGLAS® is extraordinarily in-compressible even with long-termloads due to its cell geometry without deformation. Advantage: use as load-bearing thermalinsulation without risk.

4 Incombustible FOAMGLAS® cannot burn because it consists of pure glass. Fire behaviour:Classification according to EN 13501: A1. Advantage: storage and processing not hazardous.No propagation of flames in the event of fire (chimney effect) in ventilation space.

5 Vapour-tight FOAMGLAS® is vapour-tightbecause it consists of hermetically sealed glasscells. Advantage: cannot soak through and already contains the vapour barrier. Constantthermal insulation value over decades. Prevents the penetration of radon.

6 Dimensionally stable FOAMGLAS® is dimensionally stable because glass neither shrinks norswells. Advantage: no dishing, contracting or creep. Low coefficient of expansion, nearlyequal to that of steel and concrete.

7 Acid-resistant FOAMGLAS® is resistant to organic solvents and acids because it consistsof pure glass. Advantage: no destruction of the insulation by aggressive mediums andatmospheres.

8 Easy to work with FOAMGLAS® is easy to work with because it consists of thin-walled glasscells. Advantage: with simple tools like a saw blade or hand saw, FOAMGLAS® can be cutto any desired measurement.

9 Ecological FOAMGLAS® is free of environmentally damaging flame retardants and propellants,no relevant eco-toxic components. Advantage: After generations of use as thermal insulation,FOAMGLAS® can be used again: as filler in landscaping or thermally insulating granulate.Ecologically sensible recycling through re-use.

FOAMGLAS® insulation: unrivalled performance

7 Zurich Airport, Kloten

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Outdoor “living space”

In “Five Principles for New Architecture”Le Corbusier stipulated the creation ofgreen areas with proud vegetation onotherwise void flat roofs in order tocreate natural spaces in dense urbanareas for the improvement of ambientconditions. He described the terrace or

green roof as the “zone of preference”in the house. And indeed, terrace roofsas an outdoor living space have a greatattractiveness. The rooftop is an idealplatform for a magnificent view overthe environment. And the creation ofgreen areas adds greatly to the eco-logical profile of the building andimproves the quality of living for theowner. As the design and constructionof a green roof or terrace is a verydemanding project, it is essential toconsider proven roof systems based onFOAMGLAS®, which enable architect’sschemes to be realized.

1 University Hospital, Geneva2 Sports Hall of Federal School,

Frauenfeld3 Migros Shopping Center,

Affoltern, ZH

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Living spaces on the roof

Contemporary flat roofs offer wide versatility in designand usage. The roof landscape possibilities are limitedonly by your imagination. FOAMGLAS® Compact Roofoffers a wide range of building system solutions for themost demanding situations. Designed with heavy protec-tion (roofing gravel), as a terrace or green roof, as carpark deck or as an industrial roof on steel deck: there is aFOAMGLAS® solution for every type of usage and forevery roof layout.

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Principal types of roof systems

Compact Roof with limited accessibility Page 10Compact Roof with heavy protectionThe Compact Roof with limited access subject to foot trafficis a flat roof, which is only accessed for maintenance.Washed roofing gravel is used as heavy protection againstmechanical impact and UV-attack. This roof layout is regu-larly found on industrial roofs with steel decking.

Compact Roof accessible to foot traffic Page 13Terrace roof with pavement areaFlat roofs are frequently used as extended outdoor livingrooms (terraces). Therefore the trend towards a wide varietyof aesthetic tiles and paving stones or wearing courses isincreasing. The range of products is wide: concrete pave-ments, tiles, cast stone, natural stone, boardwalk, play-ground flooring, court surfaces and others.

Green Compact Roof Page 17Moisture conditions in green roofsGreen roof constructions have positive effects for the envi-ronment and the microclimate. The plants keep the air freshand raise the level of humidity. They reduce fine dust pollutionand traffic noise. Green areas on the roof reduce the rain-water load on the urban sewer systems by naturally storingthe water. They protect the roof structure from thermalshock and transform the roof surface into a recreational area.Dependent on type, height and care requirements of the plantsan extensive or intensive greening system can be used.

Compact Roof, trafficked/parking decks Page 24Traffic accessed car park decksGreater mobility and the need for individual transport char-acterize the spirit of our times. It is obvious that traffic den-sity is also increasing ‘at rest’ and requires flat roofs of manybuilding developments to be used as parking decks. Thisalso means that parking spaces should structurally bedesigned to accomodate delivery, fire and rescue services.Dependent on load assumptions and load distribution slabs,road surfaces in granolithic concrete, asphalt, interlockingpavers or timber paving are possible.

Compact Roof Page 28Standard Compact Roof (au naturel) – with two-layerwaterproofingFor buildings without heavy protection layers or foot trafficand requiring slight weight, a simple waterproofed roof isthe perfect solution. However the roof still needs to suffi-ciently resist wind forces. The wind loads should safely betransmitted to the building’s structure. In the standardFOAMGLAS® Compact Roof this is achieved by bonding alllayers to each other. The Standard Compact Roof on steeldeck is ideal for lightweight industrial roofing.

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Architect H.P. Fontana & Partner, Flims DorfBuilt 2005FOAMGLAS® application Roof insulation, about 240 m2, T4+ slabs.Tapered Roof System (cut-to-fall elements), average thickness 145 mm andabout 900 m2, T4+ slabs, 120 mm thick, adhesively bondedHeavy protection Roofing gravel / intensive greening system

Compact Roofwith limitedaccessibility

Park Hotel ‘Waldhaus’ in Flims

For a spa, effective moisture and tem-perature control is essential for theouter skin of the building to preserveits structural integrity. Protection againstthe effects of moisture is a priority.With low density or permeable insula-tion materials moisture control requireshigh-quality vapor control layers(vapor-barriers). However, the integrityof overlapping foils jointed with bond-ing tape cannot be considered fail-safe, for instance with numerous roofpenetrations and connection joints.FOAMGLAS® Compact Roof using cel-

lular glass insulation is totally impervi-ous to moisture of any kind, due to theclosed cell geometry. It fulfills the vaporcontrol function by itself and does notneed an additional protective layer aseasily damaged foils. There is no pro-gressive moisture absorption in the insu-lation. Another system benefit with steeldecking: Adhesively bonded cellularglass contributes to a significant stiff-ening of the whole roof system. Thesway stiffness is improved as flexing andvibration is suppressed, as are mechan-ical stresses on connection joints.

All thermal and physi-cal demands made onthe insulation materialare surpassed.www.foamglas.com

Roof structure1 Steel decking2 Bituminous primer coat3 FOAMGLAS® T4+ slabs,

average thickness 145 mm,in hot bitumen, TAPEREDRoof System

4 Two-layer bituminouswaterproofing

5 Nonwoven, filter layer6 Roofing gravel

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Architect Andreas Zech, RomanshornBuilt 2000FOAMGLAS® application Roof insulation, about 200 m2, type T4+, 160 mmthick, bonded in hot bitumenFinish layer Roofing gravel

Compact Roofwith limitedaccessibility

Private House Hirt in Uttwil

The stretched building with staircaseand suite of rooms is situated on thewaterfront of Lake Constance. Theintelligible and nearly austere designforms an eye-catching contrast to thesuperb landscape. Once again with theright roof solution, evidence can besupplied that flat roofs perform betterthan expected. “Low-end systems” werenot considered due to durable con-struction principles: The FOAMGLAS®

Compact Roof was the only truechoice. The insulation is fully bondedto the structural deck using hot bitu-men and as waterproofing two-layerbitumen roofing sheets were applied.This roofing solution does not onlyprotect the building’s structure in thelong-term, but also protects the owneragainst expensive replacement orrefurbishment.

FOAMGLAS® – aninvestment for futuregenerationswww.foamglas.com

Roof structure1 Structural concrete deck2 Bituminous primer coat3 FOAMGLAS® T4+ 160 mm,

in hot bitumen4 Two-layer bituminous

waterproofing5 Nonwoven, filter layer6 Roofing gravel

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Architect/Planner Pfister Schiess Tropeano AG, ZurichRepair work 2007FOAMGLAS® application Roof insulation, about 2000 m2 type T4+, 80 mmthick and about 2000 m2 type F, 120 mm thick, bonded in hot bitumenFinish layer Concrete slabs, prefabricated

Compact Roof,accessible tofoot traffic

Swiss federal Institute of Technology, ‘ETH Polyterrasse’, Zurich

The main building of the Swiss FederalInstitute of Technology (ETH Zurich) isvery famous for its architectural designin Switzerland. The so-called MM-build-

ing (canteen, multi-purpose hall) was

added as a later

extension, whose terrace roof forms theaccessible ‘Polyterrasse’. In some placesleakage of the waterproofing hadoccured over a long period of time. Thisresulted in water ingress into the build-ing with total refurbishment as the onlysolution. For thermal insulation, theFOAMGLAS® system was chosen. Inaddition to efficient rain proofing, cel-lular glass insulation had been speci-fied for the unique high compres-sivestrength, that allows for foot and cartraffic accessible areas. The failed roofstructure was replaced with a new sys-tem, including vapor-barrier, thermalinsulation, roofing sheets and load distri-bution layer. The all glass structure of theinsulation prohibits moisture absorp-tion by the material, and its adhesivelybonded layers offer efficient protectionagainst leakage inside the building.

Totally effective in themost demanding loadsituationswww.foamglas.com

Roof structure1 Structural deck in concrete2 Bituminous primer coat3 Emergency waterproofing

(basic protection duringconstruction)

4 FOAMGLAS® T4+ insulation,80 mm thick, in hot bitumen

5 Two-layer bitumen roofingsheets

6 Building protection mat (heavyduty composite rubber mat)

7 Glass fibre separating layer8 Drainage- /sub-floor screed9 Prefabricated concrete slabs,

100 mm thick10 Protective screed with

reinforcement11 Mortar bed, point by point,

20 mm12 Concrete element

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Architect Stutz & Bolt, Architect’s Office, WinterthurBuilt 2002FOAMGLAS® application Roof insulation, about 2000 m2 type T4+,140 mm thick, hot bitumenFinish layer Sport flooring

Compact Roof,accessible tofoot traffic

Sports hall of Federal School, Frauenfeld

With the construction of a new triplegym, the Federal School in Frauenfeld(Switzerland) got a multipurpose sportscenter. The hall is jointly used by theschool, by sport clubs and by theMunicipality for different events. Theheart of the new complex is the gym,

deeply sunk below ground. The roofcovering the hall serves as an outdoorplaying field. It is enclosed and coveredwith a sports flooring. Between theroof and ground, a thermal insulationmaterial was required for outside andinside components with proven quali-ties including durability, performanceand environmental compatibility.FOAMGLAS® insulation provides anideal solution. The main demands onthe insulation material addressed byFOAMGLAS® excellent thermal effec-tiveness and high compressive strength.

FOAMGLAS® – a keyplayerwww.foamglas.com

Roof structure1 Sloping concrete deck2 Bituminous primer coat3 Emergency waterproofing

(basic protection duringconstruction)

4 FOAMGLAS® T4+ slabs,140 mm thick, in hot bitumen

5 Two-layer bitumen roofingsheets

6 Separating layer7 Sport flooring drainage layer

AB-6, 20 mm thick8 Mastic asphalt, 40 mm thick9 Sport flooring, 13 mm thick

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Architects Bob Gysin + Partner AG, ZurichBuilt 2006FOAMGLAS® application Roof insulation, about 430 m2 type T4+, Tapered RoofSystem (cut-to-fall elements), average thickness 100 mm, in hot bitumenFinish layer Playground flooring

Compact Roof,accessible tofoot traffic

Andreaspark apartment building, Zurich (Switzerland)

FOAMGLAS® is the optimal solution forthermal insulation of terrace roofs. Thecell geometry provides high compres-sive strength, free from deformationunder permanent load. FOAMGLAS® hassufficient bearing capacity for commonloads on terraces with relatively thinthickness in application. MoreoverFOAMGLAS® compressive strength ratiocovers a load safety factor that allowsfor mixed usage (allowing temporary

or later changes of use). Foot trafficaccessible flat roofs / terraces usingFOAMGLAS® slabs – in combinationwith waterproof, flexible and soft play-ground flooring – are the optimal solu-tion for stability, layer thickness, longterm thermal efficiency and moistureprotection. Particularly for high-trafficflat roofs which have to resist a varietyof strains.

When it comes to thepoint: FOAMGLAS®

www.foamglas.com

Terrace roof structure1 Concrete decking2 Bituminous primer coat3 FOAMGLAS* T4+ slabs in

hot bitumen, 100 mm thick,Tapered Roof System

4 Two-layer bitumen roofingsheets

5 Playground flooring, (Barfoscreed), 25 mm thick

6 Wearing course (Barfoplayground flooring),8–10 mm thick

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Architects Oliver Schwarz Architekten ETH / SIA / BSA, ZurichBuilt 1996FOAMGLAS® application Roof insulation, about 850 m2 type T4+,120 / 80 mm thick, in hot bitumenFinish layer Boardwalk in hardwood

Compact Roof,accessible tofoot traffic

Stepped apartment buildings, Meilen

An exclusive residence with wonderfulviews across Lake Zurich is the perfectsetting for the stepped apartment build-ings with surrounding terraces. Thesespacious accessible terraces, which formthe roof of the lower apartments,required a high performance insulationsolution: the FOAMGLAS® CompactRoof. The robust and deformation-freeinsulation is designed to ensure a rain-proof construction for generations tocome. Due to its outstanding physical

qualities, FOAMGLAS® allows for asimple roof structure needing just afew basic components. The system isdesigned to eliminate the risks ofwater ingress and leakage.

The insulation systemwith superiorperformance minimizesmaintenance andrefurbishmentwww.foamglas.com

Terrace roof structure1 Concrete decking2 Bituminous primer coat3 Emergency waterproofing

(basic protection duringconstruction)

4 FOAMGLAS® T4+ slabs inhot bitumen, 120 mm thick

5 Two-layer bitumen roofingsheets

6 Playground flooring screed(Barfo screed)

7 Boardwalk8 HEA-bearer9 Angle bar10 FOAMGLAS® edge element

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Architect Architekturwerkstatt 90, Thun / Gassner & Leuenberger ArchitektenAG, ThunBuilt 2004FOAMGLAS® application Roof insulation on the main building, about 1610 m2,type T4+ in hot bitumen. Tapered Roof System, 142 mm average thicknessRoof insulation accessible terrace, 200 m2 type T4+ in hot bitumen, 60 mm thickFinish layers Extensive greening system and floor tiles

Green CompactRoof

School for therapeutic pedagogy, Thun-Steffisburg

The new school for therapeutic peda-gogy in Thun-Steffisburg offers an opti-mal environment to educate childrenand young people with mental handi-caps. Well-built architectural designand the pleasant look and feel of thebuilding materials contribute to thecomfort of the disabled students andimprove the learning experience. AFOAMGLAS® Compact Roof with anextensive greening system contributesto energy-efficient thermal comfort in

the building. The Tapered Roof Systemwith FOAMGLAS® T4+ cut-to-fall slabswas used. Two layers of polymer bitu-men roofing sheets were fully bondedto the insulation surface and coveredwith a cap sheet, offering anti-rootqualities. Additional security is provid-ed by the all glass cell structure of theinsulation that is totally non hygro-scopic and root resistant.

Compact, waterproofand air-tight – abright future for flatroofswww.foamglas.com

Roof structure1 Timber decking2 Bitumen roofing sheet as a

separating layer3 FOAMGLAS® T4+ slabs in

hot bitumen, 142 mm thick,Tapered Roof System

4 Bitumen waterproofingsheets, 2 layers

5 Glass fibre separating layer6 Drainage layer7 Extensive greening system

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Architect Axess Projects AG, ZugBuilt 2005FOAMGLAS® application Roof insulation, about 7280 m2 type T4+ slabs in hotbitumen, 2 layers. Tapered Roof System (cut-to-fall slabs), 200 mm averagethicknessFinish layer Extensive greening system

Green CompactRoof

Office building “OPUS”, Zug (Switzerland)

Roof greening systems generally havepositive effects on the local climateand the environment. The plantingsabsorb humidity from the air and coolit down. Plants reduce fine dust pollu-tion and traffic noise. Green areas not

only relieve the rainwater load inurban sewer systems – they also pro-tect the building structure from weath-ering. Choosing a FOAMGLAS® roofsystem was a natural step to create anecological solution. FOAMGLAS® is thekey to significant energy savings.Made from recycled glass combinedwith renewable electric power, theFOAMGLAS® Compact Roof has anextremely long service-life, with mutu-al benefit for economy and ecology.Moreover is the insulation system cer-tified to standards of health andindoor air quality in building.

Flat roof concept – aglobal approach tourban ecologywww.foamglas.com

Roof structure1 Concrete decking2 Bituminous primer coat3 Emergency waterproofing

(basic protection duringconstruction)

4 FOAMGLAS® T4+ slabs inhot bitumen, 200 mm thick,Tapered Roof System

5 Bitumen roofing sheets,2 layers

6 Filter layer PP nonwoven800 g/m2

7 Crushed gravel for drainage8 Cement tiles9 Extensive greening system10 FOAMGLAS* angle fillet11 Bitumen roofing sheets,

2 layers12 FOAMGLAS® T4+ slabs,

80 mm thick13 Metal flashing

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Architects GWJ Architekten AG, BernBuilt 2005FOAMGLAS® application Roof insulation, about 6260 m2 type T4+ slabs in hotbitumen, in 2 layers. Tapered Roof System (cut-to-fall slabs), 270 mm averagethickness and about 496 m2 type T4+ slabs in hot bitumen, 140 mm thickFinish layer Extensive greening system

Green CompactRoof

UVEK Administration Building, Ittigen

Roof structure withpeak performance inenergy efficiency,certified to lowenergy standardswww.foamglas.com

Roof structure1 Concrete decking2 Bituminous primer coat3 FOAMGLAS® T4+ slabs in

hot bitumen, 270 mm thick4 Two-layer bitumen roofing

sheets5 Protection layer PP-nonwoven

800 g / m2

6 Drainage / water retentionelement

7 Extensive greening system8 Truss

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Appealing – sustainable. These are theattributes that best characterize theUVEK administration building (SwissFederal Department for Environment,Traffic, Energy and Telephone Communi-cation). In recognition of its sustainableperformance qualities FOAMGLAS® waschosen as their insulation system forthe future. Cellular glass is made from66 % recycled glass. What about thecosts? Considered as economically advan-tageous were the products that gener-ate little costs on maintenance and

repair over the long-term. That is a pri-mary benefit of FOAMGLAS®. Insteadof complicated domestic engineering,a well-designed construction usingFOAMGLAS® achieves peak perform-ance in energy efficiency: cellular glassflat roofs meet the high standarddefined by the Swiss low-energy label“MINERGIE”. “MINERGIE” is a regis-tered quality label for new and refur-bished low-energy-consumption build-ings. This label is mutually supportedby the Swiss Confederation, the SwissCantons and the Principality of Liechten-stein along with Trade and Industry.

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Architect Tilla Theus und Partner, ZurichBuilt 2006FOAMGLAS® application Main building, roof insulation: about 3470 m2 typeT4+ slabs in hot bitumen, 160 mm thick. Cloakroom building, roof insulation:about 1670 m2 type T4+ slabs in hot bitumen, 2 layers. Tapered Roof System(cut-to-fall slabs), average thickness: 90 / 190 / 290 mmFinish layers Extensive greening system

Green CompactRoof

The Home of Fifa, Zurich

sion” building. By use of the mostenergy efficient technologies it can beoperated without fossil energy sources.A key element of this sustainable ener-gy concept is the use of FOAMGLAS®

thermal insulation. Cellular glass insu-lation is an ecological building productthat provides important energy-sav-ings. It is made from recycled glassusing renewable energy sources. Lastbut not least, the Compact Roof is avery durable system, which is the bestbargain for the environment.

Flat roof constructionwith the best scoresfor economic andecologicalperformanceswww.foamglas.com

Roof structure1 Concrete decking2 Bituminous primer coat3 Emergency waterproofing

(basic protection duringconstruction)

4 FOAMGLAS® T4+ slabs in hotbitumen, 160–200 mm thick,and angle fillets

5 Bitumen roofing sheets,2 layers

6 Protection layer PP-nonwoven800 g / m2

7 Drainage gravel 8/168 Filter layer9 Extensive roofing system

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When building the new “Home ofFifa”, the headquarters of the world’sfootball/soccer governing body, maxi-mum performance was required at alllevels. The building needed being con-structed in a record time and ‘fair play’was required in all environmental mat-ters. New ideas were demanded fordecorative art on the building to refer-ence the world of football. The Fifaheadquarters is a so-called “zero emis-

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Art director Andre HellerArchitect Mag. Carmen Wiederin and Propeller Z, ViennaIng. Georg Malojer, Project Management GmbH & Co, InnsbruckBuilt 1995 / 2003 / 2007FOAMGLAS® application Roof insulation, about 5200 m2 type T4+slabs in hot bitumen, 100 mm thickRoof finish Intensive greening system

Green CompactRoof

Swarovski Group, Wattens

As with the first building of SwarovskiCrystal Worlds, FOAMGLAS® insulationsystems were chosen for the extension“Sequel of Fairy Tales”. “CrystalWorlds” – an underground building –was designed with a most demandingroof structure. A critical concern wasreplacement and repair work on greenroofs of that scale and design couldpossibly require investment and shutdown the enterprise. Therefore, the

principal selection criteria for thermalinsulation was efficient, totally weath-erproof, failure-free roof system thatwould last for decades. The high com-pressive strength of the insulation wasan additional reason. FOAMGLAS® wasselected, since the filled ground top-ping the roof structure is meters thickand the roof has to bear considerablesoil pressure.

FOAMGLAS® –Compact Roof, doublesecurity to preventwater ingresswww.foamglas.com

Roof structure1 Concrete deck2 Bituminous primer coat3 FOAMGLAS® T4+ slabs,

100 mm thick, in hot bitumen4 Bitumen roofing sheets,

2 layers5 Building protection mat6 Drainage layer7 Filter layer8 Intensive greening system

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Architect Atelier WW, ZurichBuilt 2003FOAMGLAS® application Roof insulation, about 8290 m2, type T4+, slabs,60 / 80 / 100 mm thick and about 1100 m2 type F slabs, 100 mm thick,in hot bitumenFinish layers Extensive greening system, cement boards, Bituzim® (groutingasphalt pavement)

Green CompactRoof

Specialized dealers, Dietlikon

Profitability andefficiency: theFOAMGLAS® factorof successwww.foamglas.com

Roof structure1 Concrete deck2 Bituminous primer coat3 Emergency waterproofing

(basic protection duringconstruction)

4 FOAMGLAS® T4+ slabs inhot bitumen, 100 mm thick

5 Bitumen roofing sheets,2 layers

6 Protection layer PP-nonwoven800 g / m2

7 Drainage gravel 8 / 168 Filter layer9 Extensive greening system10 Bituminous primer coat11 FOAMGLAS® T4+ slabs in hot

bitumen, 80 mm thick12 PC fixing plates (claw plates)13 Cement boards (Aquapanel®

Outdoor)

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Particularly demanding requirementsmust be fulfilled in retail developmentssuch as stores, shopping malls andboutiques with high foot traffic. Thesepublic buildings must meet rigoroussafety standards. Cost effective solu-tions are needed which have lowmaintenance requirements. TheFOAMGLAS® Compact Roof meetsthese demands completely safe andprofitably. FOAMGLAS® avoids physicalinteractions in buildings. It is non-com-bustible and does not contribute to thepropagation of fire. Further, it is arobust and high performing insulationmaterial that stands the test of time.

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Architect / planner Pierre & Fabien Steiner SA, BrentBuilt 2000FOAMGLAS® application Roof insulation, about 6600 m2 type T4+ slabs,200 mm thick and about 900 m2 type S3 slabs, 80 / 100 mm thick, in hotbitumenFinish layers Extensive and intensive greening systems

Green CompactRoof

Centre Patronal, – Employer’s Federation, Paudex

The architecture of green flat roofs isfar more than a feast for the eyes.Having chosen for a FOAMGLAS® sys-tem, excellent thermal insulation andefficient protection of the roof struc-ture is ensured. The high compressivestrength of the FOAMGLAS® insulationmakes it an ideal product for all typesof green roofs. Green roof construc-

tion moreover has the beneficial effectof reducing rainwater runoff into thesewer system and improves the micro-climate. Outstanding physical qualitiesincluding rain- and vapor-proofingcapacity, high compressive strength,resistance to acids and organic solvents,resistance to all kinds of vermin enableFOAMGLAS® insulation to lead the wayto sustainable and cost-efficient eco-logical construction solutions.

Forward lookingplanning:FOAMGLAS® – simplya question of costefficiency and ecologywww.foamglas.com

Roof structure1 Concrete deck2 Bituminous primer coat3 FOAMGLAS® S3 slabs in

hot bitumen, 80 mm thick4 Bitumen roofing sheets,

2 layers5 Protection layer, nowoven6 Expanded clay7 Filter layer, glass fibre

membrane8 Bed of fine gravel9 Cement tiles

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Architect Betrix & Consolascio Architekten, ErlenbachFrei & Ehrensperger Architekten, ZurichBuilt 2007FOAMGLAS® application Roof insulation, about 2680 m2 type F slabs in hotbitumen. Tapered Roof System (cut-to-fall slabs), 130 mm average thicknessFinish layer Grouting asphalt pavement

Compact Roof,trafficked

Letzigrund Stadium, Zurich

The characteristic feature of the newZurich Letzigrund Stadium is eleganceand not intrusion. Slim, slanting stayssupport the stadium roof. The innercourt and the stands are partiallyembedded in the ground. It is a multi-purpose event arena, where soccer /football and athletic sports (ZurichWorld Championships in Athletics)have excellent facilities and utilities.With respect to thermal insulation,FOAMGLAS® tops the league. Where

thermal efficiency needs to be com-bined with heavy duty (trafficked serv-ice decks), FOAMGLAS® cellular glassinsulation is a key player. It is also afront-runner as an ecological buildingproduct. It does not give off harmfulemissions (low-e product) and fulfillsall requirements regarding health andindoor air quality in buildings. Finally,durability is one of the essentialrequirements, and FOAMGLAS® insula-tion gets the best score.

Peak performance:compressive strength,safety, durabilitywww.foamglas.com

Roof structure1 Concrete deck2 Bituminous primer coat3 FOAMGLAS® F slabs in

hot bitumen, 130 mm thick,Tapered Roof System

4 Bitumen roofing sheets,2 layers

5 Separating layer6 Protection layer in mastic

asphalt, 30 mm thick7 HMT top layer, 100 mm thick8 Grouting asphalt pavement,

35 mm thick9 Gutter10 Flashing strip11 Parapet

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Architect / Supervision Neff Neumann Architekten AG, ZurichBosshard + Partner Baurealisationen AG, ZurichBuilt 2006FOAMGLAS® application Roof insulation, about 900 m2 type T4+ slabs in hotbitumen, 1 60 / 240 mm thick and about 485 m2 type S3 slabs in hot bitumen,160 mm thickFinish layers Extensive greening system, mastic asphalt

Compact Roof,trafficked

Commercial College KV, Baden-Zurzach

The extension of a commercial collegefinally brought an end to the squeezein the classrooms. The new structurebridges the gap to the existing build-ings (schoolhouse and gym). Facingconcrete is used for the walls of thenew building to achieve a thermalefficiency superior to the average valuerequired by European standards.FOAMGLAS® was used as the roof insu-lation and enables to improve the ener-gy efficiency of buildings. FOAMGLAS®

is the preferred insulation solution, notonly because Building Regulationsdemand exacting insulation values, butalso because of its other specific quali-ties, including water- and vapor-proof-ing functions, structural stability, non-combustibility, ecological profile, andthe long-service life of cellular glass.

FOAMGLAS® – a classicexample of a materialwith a promisingfuturewww.foamglas.com

Roof structure1 Concrete deck2 Bituminous primer coat3 Emergency waterproofing

(basic protection duringconstruction)

4 FOAMGLAS® S3 slabs inhot bitumen, 160 mm thick

5 Bitumen roofing sheets,2 layers

6 Separating layer, PE foil7 Load distribution slab,

50–120 mm thick8 Bituminized separating layer

(glass fleece)9 Mastic asphalt in 2 layers,

2 x 25 mm10 Chippings11 Gutter12 Connection strip

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Architect A. Grazioli / A. Krischanitz, Berlin / ViennaBuilt 2006FOAMGLAS® application Roof insulation, about 480 m2 type T4+ slabs,160 mm thick, and about 850 m2 type S 3 slabs, 160 mm thick, in hot bitumenFinish layers Intensive greening system / wood-block pavement

Compact Roof,trafficked

Rietberg Museum, Zurich

In the transition area from undergroundto aboveground FOAMGLAS® insulationwas installed. The green Compact Roofapplication was a necessity because effi-cient water-and damp-proofing qualitieswere required. Green roofs are partic-ularly exposed to moisture and vaportransport. Cellular glass is the ideal solu-

tion as it eliminates the risk of intersti-tial condensation and is resistant towater ingress and root penetration.Other special advantages for green roofsinclude its resistance to acids, vermin,rodents and insects (rot proof). Whenapplied for trafficked roof areas, theunrivalled compressive strength is amajor benefit. FOAMGLAS® providesdurable insulation solutions even underheavy duty and permanent loads.

FOAMGLAS® meetsthe most ambitioussafety demands.www.foamglas.com

Roof structure1 Sloping concrete deck2 Bituminous primer coat3 FOAMGLAS® S3 slabs in

hot bitumen, 160 mm thick4 Bitumen roofing sheets,

2 layers5 Separating layer, PE-foil6 Load distribution slab in

reinforced concrete, 120 mmthick

7 Bed of fine gravel, 40 mmthick

8 Wood-block pavement90 / 90 / 90 mm

9 Separating layer, nonwoven10 Flashing strip11 Sandstone, existing

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Architect / planner Bauengineering AG, ZurichBuilt 2005FOAMGLAS® application Roof insulation, about 4,215 m2 type S3 slabs,120 mm thick and about 1,295 m2 type T4+ slabs, 120 mm thick, in hot bitumenFinish layers Site concrete / Extensive greening system

Compact Roof,trafficked

Migros Shopping Center, Affoltern (ZH)

Staff pension funds manage the retire-ment account of their members. Alarge percentage of their capital isinvested in property. The Migros pen-sion fund as building owner is exercis-ing this responsibility with care. Theydo not invest for short-term profitmaximization with risky solutions, butinstead choose high-end, sustainableconstruction systems to ensure finan-cial profits and lifetime performance.

This applies particularly to flat roofs,which must provide a long service lifefor ecological and economical reasons.Another demand is simple disposal atthe end of the building’s life, withoutimpairing health or the environment.All FOAMGLAS® Compact Roof systemsadd a new dimension in performanceand economy while protecting againstdepreciation in value of real estateproperty.

Quality components –protection againstdepreciation in valuewww.foamglas.com

Roof structure1 Concrete deck2 Bituminous primer coat3 Emergency waterproofing

(basic protection duringconstruction)

4 FOAMGLAS® S3 slabs inhot bitumen, 120 mm thick

5 Bitumen roofing sheet,2 layers

6 Building protection mat(heavy duty compositerubber mat)

7 PE-foil8 Load distribution slab9 ACO-Passavant outlet

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Architects Massimo Marazzi and Elio Ostinelli, ChiassoBuilt 2005FOAMGLAS® application Roof insulation, about 330 m2 type T4+ slabs,2 layers in hot bitumen, 200 mm thick in totalFinish layer Roofing sheets, 2 layers, cap sheet with mineral finish (‘naked’ roof)

Compact Roof,au naturel –with two-layerwaterproofing

Administration building of customs goods clearing, Chiasso

For the first public building in the TicinoCounty, meeting low-energy require-ments (according to Swiss low-energystandard, ‘Minergie’), the buildingenvelope, including the roof, had to bedesigned for high thermal efficiency. Avital part of the design was the use ofFOAMGLAS® for the roof construction.Cellular glass insulation provides fullsystem integrity in the flat roof, with a

minimum of components. Each com-ponent and layer is bound to the oth-ers using hot or cold bitumen, formingan impervious skin that prevents theingress of water. The roof system elim-inates the risk of interstitial conden-sation. This means that FOAMGLAS®

remains totally effective in the mostdemanding situations and keeps roofmaintenance costs low.

A well-engineeredsystem: cost-effectiveand stable under allconditionswww.foamglas.com

Roof structure1 Sloping concrete deck2 Bituminous primer coat3 FOAMGLAS® T4+slabs in hot

bitumen, 200 mm thick4 Bitumen roofing sheets,

2 layers

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Roof constructions covering heated rooms

Three variations exist in the construction of thermallyinsulated flat roofs: the single skin flat roof (warm roof),the inverted roof and the twin-skin flat roof (cold roof).The design challenges associated with flat roofs can eas-ily be avoided by choosing a FOAMGLAS® solution. In thefollowing sections, some successful FOAMGLAS® solutionsare outlined.

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1 Secondary school Weid,Pfaffikon (Switzerland)

2 Lack of dimensional stabilityof insulation materials cancause warping and theroofing felt joints to burstopen.

Warm roof

Flat roofs, using insulation materialsthat are not stable when exposed tothe effects of rain or frost-thaw cyclesare at risk of thermal performance lossand need a 100 % effective water-proofing membrane for moisture pro-tection. As the roofing sheets on topare generally very impermeable to watervapor, a vapor control layer has to belaid beneath the insulation layer.

With rigid FOAMGLAS® being laidon plain structural decking there isno need to install an additionalvapor-barrier, because cellular glassCompact Roofs are totally imper-meable to diffusion.

The waterproofing is at serious riskwhere point loads puncture the roof-ing sheets that have been installed over

low-density and compressible insula-tion. The compressive strength of theinsulation is quickly exceeded. Lack ofdimensional stability of insulation mate-rial when exposed to thermal shockcan also cause damage to the weath-erproofing membrane.

Dimensional stability and integrityof FOAMGLAS® is absolute. It remainsstable, and even under permanentload, the roof system is fully sup-ported by the high compressivestrength of FOAMGLAS®. The struc-tural integrity and puncture resist-ance of the system reduce the likeli-hood of leakage.

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In rare cases of water ingress, moistureis generally kept at the surface of theinsulation. FOAMGLAS® forms animpervious skin that protects theroof. All roof components and lay-ers are bonded to each other so theinsulation will not absorb waterand the system prevents the spreadof water.

With conventional systems, water whichhas entered the roof, will find its wayto any imperfection in the vapor controllayer, run on the concrete deck andleak out inside the building. This makesit difficult to detect the origin of thedamage, and is likely to have harmfulconsequences for the insulation.

Inverted roof

The waterproofing membrane is direct-ly applied to the structural deck andthen covered with an insulation that ismoisture resistant when exposed tointermittent water load. Often extrudedpolystyrene insulation (XPS) is used.

However, in many environments insu-lation boards are frequently soaked byrainwater and XPS-boards becomepermeable to diffusion. Diffusion-tightcovering layers can lead to increasedmoisture content in the insulation,and, wet insulation results in signifi-cant heat loss as the heat is withdrawnby the water flow beneath the insula-tion boards. Permanently wet layershave the same effect as a topsidevapor-barrier and should be avoided.

For inverted green roofs, Green RoofBuilding Regulations demand protec-tion of the thermal insulation fromroot penetration. This requires anti-root membranes, which are, totallyvapor-proof. Use of these special roof-ing sheets is, however, contrary to therequirement of using covering layerspermeable to diffusion.

FOAMGLAS® cellular glass is imper-vious to the effects of moisture andis not affected by heat loss or inter-stitial condensation. A dry insula-tion is the best protection againstroots.

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Roof structure of anon-ventilated roof(“Inverted roof”)

1 Structural deck (in generalreinforced concrete)

2 Waterproofing membrane3 Extruded polystyrene boards (XPS)

with shiplap edge profile4 Filter layer (permeable to

diffusion)5 Finish layer

As in the FOAMGLAS® CompactRoof moisture is kept away fromthe structural deck, as the weath-erproofing membrane is directlybonded on to the deck.

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Roof structure ventilated roof(cold roof)

1 Structural deck (e. g. reinforcedconcrete)

2 Vapor-barrier3 Thermal insulation4 Ventilation space5 Outer shell ( e. g. timber deck)6 Separating layer7 Roofing sheets8 Finish layer

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Conventional roof structureof a non-ventilated roof(“warm roof”)

1 Structural deck (e. g. reinforcedconcrete)

2 Vapor-barrier3 Thermal insulation (tapered slabs,

if required)4 Separating layer, dependent on

type of roofing sheets5 Roofing sheets6 Protection and separating layer7 Finish layer

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Deformation and irregularities in thestructural deck can also be harmful tothe weatherproofing sheets and caneven damage them. Irregularities inthe weatherproofing surface (e.g. sideoverlaps of bitumen roofing sheets, inparticular with 5 mm thick torch-onmembranes) can create voids beneaththe insulation, which are likely tohaul concrete stone pavements of traf-ficked roofs. FOAMGLAS® installa-tion method is fast and easy.Potential irregularities at the insu-lation surface, which may bepassed on from the sub-construc-tion, can simply be levelled outwith a grinding tool. FOAMGLAS®

thus provides an optimal, stableand plane bearing surface for theroofing sheets.

Cold roof

This construction is twin-skin based ona thermally insulated sub-roof and anouter shell with weatherproofing – andin between a ventilated roof space. Inprincipal, the ventilation space helps toprevent condensation from beingabsorbed. In comparison with warmroofs, cold roofs have the advantagethat wet insulation has the chance todry.

FOAMGLAS® roof systems do notrequire a ventilation space, as cellu-lar glass is resistant to moistureabsorption (water and vapor) andacts as an efficient vapor-barrier.The rainproof insulation does notget wet from rain or mist. This elim-inates the risk of wet insulationbeing built in.

In a ventilated roof very small leaksmay not affect the construction, asthere is a chance for it to dry out. Incases of more significant leakage, evenafter repair, the problem may persistunless all roof components are removed.With an unpredictable leakage path,resolving it may prove to be a futiletask.

The FOAMGLAS® Compact Roof isimpervious with all insulation slabsand layers being bound to eachother, forming a water tight layer

that prevents the ingress of water.As it is a sealed system, the prob-lem tracking in case of leakage isvery easy.

Accessible or trafficked flat roofs, whichmust meet additional demands andrequire appropriate building technolo-gy, generally have no cold roof layout.

3 DurchwurzelteKunststoffdämmung

4 Wassergesättigte Bereiche ineiner Umkehrdachdämmung

5 DurchfeuchteteWärmedämmschicht unterPflasterbelag

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Weatherproofing – one- ortwo-layer system?

A two-layer waterproofing systemis preferable to one, as two layersapplied to the insulation have bet-ter puncture resistance and prod-uct reliability in case of bad spots inthe roofing membrane. With sin-gle-ply roofing membranes (andfelt joints) full imperviousness torainwater must be achieved. Withtwo or multiple layers of weather-proofing bonded to each other,

minor imperfections in one of thesheets does not allow water ingressinto the roof.

1 Imperfections in the cap sheet2 Imperfections in the underlay sheet

Two layers of roofing sheet fullybonded to each other provide saferrain proofing in case of bad spots inone layer or the other

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Sloping roofs

In the direction of the roof slope, theweather-proofing level should presenta falling gradient of at least 1.5 % tothe outlet or drainage gutter. If thefalling gradient is less, specific meas-ures have to be taken. For instance, thedrainage capacity needs to be improvedby lowering the outlet opening by atleast 20 mm below the weatherproof-ing surface. For balconies, accessibleroofs, terraces or roofs without protec-tion and mastic asphalt layers or fornon-ventilated timber constructions afalling gradient lower than the stipu-lated bare minimum is not allowed(see Building Regulations).

With warm roof construction thefalling gradient can be created by ascreed to fall on the concrete deck orby using cut-to-fall insulation slabs.

Inverted roofs should not be designedwith extruded polystyrene cut-to-fallinsulation slabs, as adaptation and lev-eling out by grinding become neces-sary. The full integrity of the foamedskin is essential to ensure the perform-ance of the roof system. In addition,the lowering of the rainwater outlets(if the falling gradient is lower thanstipulated) becomes problematic, sincethe waterproofing sheets are appliedto the structural concrete deck and'soft' insulation is not well suited tomake recesses once installed.

You should also be aware that accessi-ble roofs – designed with thermal insu-lation on top of the waterproofing –do not allow for a reverse gradient.Unlike warm roofs, totally horizontalinverted roofs cannot be designed(with regard to the constructional tol-erances).

FOAMGLAS® Tapered Roof Systemprovides an intelligent solution.The insulation slabs are tapered forany specific project and specifiedgradient. The construction of aFOAMGLAS® Tapered Roof is recom-mended in all cases where an addi-tional screed-to-fall on the structur-al deck is not practicable, eitherbecause of stability and load limi-tations or because of the roofdrainage pattern.

In order to prevent any water ingressFOAMGLAS® Compact Roofs or invert-ed roofs using FOAMGLAS® should notbe constructed with an additionalscreed-to-fall layer on top of the insu-lation. This is to prevent the risk ofleakage paths within the screed whereflashings/connections to parapet walls,doorsills or roof outlets may be fin-ished improperly.

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Types of usage and construction layout

Compact Roofs are classified according to the type ofusage: Compact Roofs with limited accessibility, accessi-ble Compact Roofs (terrace roofs), green Compact Roofs,trafficked Compact Roofs and ‘natural or naked’ CompactRoofs. The following section outlines the different kindsof usage and the specific design principles. With focus onfailure-free performance, some planning rules are provid-ed how to avoid possible damage.

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Compact Roof withlimited accessibility

The Compact Roof with limited accessis a flat roof where accessibility is onlyallowed for maintenance. Thermal insu-lation is FOAMGLAS® T4+ and the slabsare fully bonded to the structural deckusing hot bitumen. A polymer bitumenweatherproofing is applied in two lay-ers – and covered by a protection layer;for instance a synthetic fiber fleecethat fulfills mechanical protection andfilter functions. To ensure long mem-brane life, a heavy protective layer ofwashed roofing gravel (shingle) isplaced, to offer resistance againstmechanical stresses and UV-attack.

For details of the different FOAMGLAS®

roof systems see page 9.

Accessible Compact Roof

The accessible Compact Roof is fre-quently situated in close proximity tocommon rooms. It covers heated roomsand can be used as outdoor livingspace. The elementary structure up tothe weatherproofing is identical to theCompact Roof with limited accessibility.In cases where no impact noise is alsoan issue, sound insulation boards canbe laid to replace the fleece layer. Theflooring is generally made of ceramic,concrete, cast stone or natural stonetiles, occasionally asphalt layers orboardwalk finishes are laid. Tiles areeither set into a mortar screed, into abed of fine gravel or placed on pres-sure distributing rubber pads.

Green Compact Roof

With green roofs, distinction is madebetween extensive and intensive plant-ing systems. Typical coverings for theextensive planting systems are low-levelfoliage and ground-cover plants, whichare not very demanding regarding soilthickness, nutrition and irrigation require-ments. A soil thickness of 5 to 10 cm issufficient for these types of plants andthey can even grow on pitched or slop-ing roofs.

1 Stadium ‘Stade de Suisse’Wankdorf, Berne

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Typical possibilities for the intensiveplanting systems are conventional roofgardens, where time is spent and whichare kept immaculate. Plant and land-scaping choices are nearly unlimited.The plant species require a soil thick-ness from 15 cm to 1.5 m. Dependingon the type of plantings and theirmaintenance / nutrition requirements adistinction is made between “simpleintensive plantings” (grasses, herba-ceous perennials, low-growing bushes)and “intensive plantings” (includingbushes and trees, needing space fordevelopment). The layout of a greenCompact Roof from the waterproofinglevel upward generally includes thefollowing functional layers (from topto bottom):

Soil: or the planting medium for theplantsFilter layer: to prevent fine particulatesoil from obstructing the drainage layerDrainage layer: to carry off rainwateror for water retentionBuilding protection mat: to offer pro-tection against mechanical damage ofthe anti-root membrane and the roof-ing sheetsAnti-root membrane: to protect thewaterproofing against root penetration(not required as an additional layer, if theroofing sheets themselves are anti-root)

For extensive planting systems a fallinggradient of at least 1.5% is recommend-ed. With intensive planting systems therainwater is generally used to feed theplants and the installation of a waterretention irrigation system on top of azero degree waterproofing level meetsthe requirements.

The planting system protects the build-ing’s waterproofing against thermalstresses. However, risks of damagemay come from activities as:horticultural work and outdoor

leisure (risks of mechanical damage)

With extensive planting systems theeffort to detect possible leakage andto complete repair work are as compli-cated as on terrace roofs with tiles in abed of fine gravel. With intensive plant-ing systems (thick soil layers etc.) theseefforts and expenses can be much moresignificant.

As the source of the damage and thedamage caused by leakage are notlocated together, it is highly recom-mended to use materials, that limit orprevent the moisture penetration insidethe insulation: therefore fully bondedand impervious FOAMGLAS® CompactRoof systems are the best choice.

Trafficked Compact Roof

In this application preference is given tothe FOAMGLAS® system due to the highcompres-sive strength and the higherresistance to edge pressure of cellularglass. This is true also for heavy traffic– for instance, heavy goods vehicles(HGV). The allowable stresses can beapplied without any deformation ofthe insulation. The result is total secu-rity with a slim roof construction.

In rooftop car park decks, roofingmembranes are directly applied to theinsulation layer. To protect the water-proofing skin a load distribution layeris required. The thickness / reinforce-ment of the pressure distribution slabis dependent on the load assumptionsand the wheel load. If an asphalticwearing course is demanded, a matreinforced concrete slab of about 8 cmmust be laid beneath the two-layermastic asphalt topping. This reinforcedconcrete slab must be used for areas thatare exposed to weathering and notsheltered by a roof. In these exposedareas, heating and softening of themastic asphalt may be considerable. Inaddition, it has to be taken into consid-eration that, compared to non-accessedflat roofs, car park decks are subject tovarious additional stresses, which canbe quite high and induced by:

2 Insulation penetrated by roots3 Spreading / deformation of

the pavement in consequenceof a soft, resilient substrate

4 Breakage of tiles and tilt upof sleepers as a result ofdeflecting insulation insub-construction

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Mechanical stresses on thewaterproofing caused by thepavement and the traffic loadBy braking and acceleration,

shear forces around curvesOn the joints / transition zones of

large paving slabs or on joints ofthe load distribution slabStresses on the waterproofing

due to the deformation of thesupported load distribution slab(changes in temperature)Stresses at fissures in the load

distribution slab (caused forinstance by insufficient or lackingjoint cutting)Stresses on the waterproofing

due to deformation of the structuraldeck under the traffic loadsStresses on the waterproofing

during construction (for instanceduring laying of the concrete orthe pavement blocks)Stresses on the borders of the

overlay in front of rising walls(in particular with rigid topping).

The above inventory of stress factorsmakes it obvious that the choice of ahigh-grade waterproofing and thermalinsulation system is essential for the serv-ice life of a car park deck. Particularlycritical is that the weatherproofingmembrane be both robust and flexible.

Dependability of car park deck lay-outs: Leakage detection on warm roofswith reinforced concrete pavement israther difficult because of the longleakage paths and repair work requiresextensive effort and money. That beingthe case, FOAMGLAS® solution is thefirst choice. Cellular glass thermal insu-lation slabs fully adhered and bound toeach other with hot bitumen (and thewaterproofing applied by pour androll) ensures system integrity and pro-vides protection against water ingress.

Standard Compact Roof (aunatural) – with two-layerwaterproofing

Where roofing efficiency and minimaldead load are key requirements, thestandard Compact Roof without anyprotection layers or specific use finishesprovides the ideal solution. The roof

system must ensure full wind loadresistance. The wind forces have to bepassed on to the structure without anyrisk. In the standard Compact Roof aunatural this is accomplished by meansof bonding all layers to each other;from structural deck to insulation, tothe weather-proofing. Since this is ingeneral, the layout of industrial light-weight roofs on steel deck, this appli-cation is examined in more detail inthe following.

Industrial lightweight roof:Lightweight construction is increasinglybeing used for commercial and indus-trial buildings. This means that flatroof systems without any protection orfinish layers are being built. Where theindoor use requires thermal insulation,requirements for stability and the con-trol of interactions in building have tobe met as well. Conventional insula-tion systems often do not provide thesame efficiency and safety in the longterm as FOAMGLAS® systems canensure. An insulation made of highcompressive and non-combustible cel-lular glass has proven advantages.

Bonded system: particular require-ments: With profiled steel decking forlightweight construction the trendtowards particularly thin steel sheets,wide spans and wide troughs areobserved. This is where the use ofFOAMGLAS® adds to the structural sta-bility of the roofing design.

FOAMGLAS® Boards and slabs areadhesively bonded to the crownsof the steel deck. The bondingtechnique, the high compressivestrength and the dimensional stabil-ity of the insulation achieve anexcellent rigidity of the whole roofsystem.

Non-combustibility and the impervi-ousness to water and water vapor ofcellular glass play a key role in prevent-ing possible damage as explained inthe following.

3

4

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5 Obvious folds in the vapor-barrier The consequence:moisture is carried by airflowinto the insulation layer.

6 Corrosion damage on a steeldeck roof.

7 Perforated steel deck sheetson the soffit side. Eachmechanical fastener formsa cold bridge and is at riskof corrosion.

8 Condensation and shearstresses contribute to thedestruction of fasteners bycorrosion.

Damage symptoms andhow to prevent them

Typical defects on flat steel deck con-structions can be categorized in fourgroups:Leakage (rainwater ingress from

outside) – e. g. because of a combi-nation of different materials, insuf-ficient fixing at connections andedges, imperfect butt- and side-joints on the roofing sheets.Construction and functional

deficiencies – due to non-observance of building physics(permeability to water-vapor andthermal insulation), installationof wet insulation materialStorm damage – due to insuf-

ficient anchoring of canopies orpoor workmanship in sealing /bonding technologyAgeing of materials, failure of

materials: no weather-resistanttop coatings, crack formationdue to UV-attack, unsuitableroofing felts.

“A flat roof is as efficient as its con-nection joints”: In addition to damagefrom physical interactions in buildingthe second contributory damage factoris faulty connection joints.

Building physics

Steel decks, contrary to heavy concretedecks, have very low thermal mass.Fluctuation in temperature has a directeffect on the indoor climate. In addi-tion, steel decks will not absorb mois-ture from ambient air. Condensationforming on the soffit from drippingwater is likely to appear more frequent-ly, if thermal insulation is insufficientlydesigned.

It must be ensured that the insulationlayer is adequately dimensioned andremains dry to ensure thermal per-formance after installation. An essen-tial consideration is moisture transportrelated to vapor diffusion. Warm indoorair with high humidity must not beallowed to condense moisture into theinsulation structure. To prevent thepassage of vapor, full vapor barriersmust be used with bonding tape on

the joint connections to form an air-tight layer. In many cases this is notdone, even with good workmanship.

FOAMGLAS® with its closed cellularglass structure is non hygroscopic, fullywater-and vapor-proof and keeps mois-ture out in the long term. Because of itsall glass closed cell geometry the vapor-barrier function is automatically incor-porated.

Deterioration in thermal performancecaused by water or water vapor can beavoided. Even in case where there aredeficiencies in the weatherproofingmembrane, the insulation performanceremains unaffected. And: the roof sys-tem layout keeps potential leakageconfined to a limited area.

No risks of corrosion

The long-term behavior of a roof maysubstantially be compromised by cor-rosion when mechanical fixing of thethermal insulation and the vapor-barri-er to the steel deck is required. For a5000 m2 roof area, using 4 mechanicalfasteners per m2 surface area, thismeans that the steel deck has 20,000perforations. Furthermore, the fasten-ers create cold bridging and can beharmed by condensation water. TheFOAMGLAS® Compact Roof solutionon steel deck avoids these difficulties.Using the compact construction method

where all layers are adhesively bonded,including steel deck, FOAMGLAS® insu-lation and the weatherproofing mem-brane, there is no need for mechanicalfasteners. In addition, the load-depend-ent vibrations and deflections of thesteel deck are considerably reduced asFOAMGLAS® stiffens the roof system.Residual dynamic stresses can be sup-ported by the FOAMGLAS® roof systemwithout problems.

34

8

5 6

7

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35

A win-win situation

Construction should be assessed for the long-term. Thebuilding owner wants to use their real estate for decadesand seeks sustainable performance without expensivereplacement or refurbishment. The guiding principle forinvestment should be “Once and for all”. This strategy willpay off: The FOAMGLAS® Compact Roof system is likely toprovide a service life of 50 years or more. Be it residential,commercial, industrial or public construction: the qualityof the insulation system is critical for the service life ofthe roof and the sound structure of the building over thelong-term. It plays a key part in the overall cost efficiency!

1

1 Seebach Center, Zurich2 Migros Distribution Center,

Neuendorf (Switzerland)

2

Good investments help yousave money

Escalating prices for energy make“investment in thermal insulation” theorder of the day, and probably for manydecades to come. In considering theprofitability in construction, it’s clearthat excellent thermal insulation is thekey to optimal efficiency. The axiom,“a penny saved is a penny earned” isvalid. The best solution is not the low-cost one, but the one that steadily savesenergy costs and eliminates expensivereplacement or refurbishment. It paysoff to invest in high-quality materials and

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economic environment, the need forenergy-efficient house building and theuse of ecological construction materi-als is vital to our future.

Optimal protection for yourbuilding investments

Well-engineered FOAMGLAS® insula-tion technology – for the protection ofthe fabric of the building from theeffects of cold, heat and rain – is abooming market, particularly for flatroofs. Cellular glass insulation ensuresthat thermal performance remains effec-tive for the long-term and protects thebuilding against serious damage fromall sorts of catastrophes. This adds upto an all-inclusive value proposition,that smart architects and clients appre-ciate and choose.

3

36

3 CSS Insurance Company,Lucerne

systems. FOAMGLAS® Compact Roofdesign ticks all the boxes. CompactRoofs bring a new dimension in struc-tural performance and economy.

Durability

Particularly for flat roofs, thermal insu-lation is the key to long-term preserva-tion of value of the building. Thermalinsulation makes part of the construc-tion elements difficult to access so therepair or replacement can even be costprohibitive. It is thus essential to paygreat attention to the choice of mate-rials and workmanship. It is withoutdoubt, that high-end FOAMGLAS®

Compact Roofs set the course for abright future.

For good and all

With 50 years of experience in flat roofinsulation it’s a fact: FOAMGLAS®

Compact Roofs offer solutions for themost demanding roof situations, withperformance that remains totally effec-tive for the lifetime of the building. Thishas been acknowledged by many build-ing-professionals. The trend towardsquality, according to the principle “Onceand for all”, is increasing on construc-tion projects. In today’s challenging

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37

Preventive action starts with thechoice of materials

“Fire disaster”, “There is evidence thatfire safety regulations have not beenfollowed”, “Rapid propagation of thefire has been encouraged”, “Sea offlames”

These headlines make evident: To fighta fire in a building – in particular atroof level – is rather difficult, even iffire regulations have been followed.

All the more care and attention has tobe given to preventive fire protection.By choosing adequate materials androof systems the risk of fire develop-

ment – in particular the spread of fireacross voids and flammable materials –can be reduced significantly. In manycases FOAMGLAS® cellular glass insula-tion, especially the Compact Roof sys-tem, can help avert disaster.

Smoldering fires – extraneousperils

Fires of this nature generally spreadinside construction elements where theymay go undetected for a long time.Sometimes there are hours betweenundetected ignition and blazing up ofa fire.

The specific structural and chemicalcharacteristics of some insulants increasethe risk of smouldering fires. This isnot the case with FOAMGLAS®. The allglass closed cell structure of the insula-tion forms a shield.

Foam insulation, for instance poly-styrene or polyurethane, are com-bustible. During combustion, liquefiedand blazing parts of the material dripdown, causing fire to spread. In partic-ular for public buildings, in conferenceand exhibition halls, office buildings,hotels, restaurants and catering build-ings the use of combustible / flamma-ble materials is not recommended.

Preventive fire protection

After fire strikes intense discussions take place regardingresponsibilities and fire precautions. The part played byinsulation materials is a frequent issue. Studies provideclear evidence: FOAMGLAS® contributes to efficient pre-ventive fire protection. Cellular glass is non-combustibleand does not give off fumes or toxic gases.

1

1 The propagation of fire acrossthe roof can cause totaldamage on the building.

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FOAMGLAS®: Neither fumesnor toxic gases

Fire disasters may not always exhibit“a sea of flames”. Flashback to theevents at Düsseldorf Airport (1995),with 17 casualties or the fire in theMontblanc Highway Tunnel (1999),which caused the death of 39 people.In both cases toxic gases from insula-tion materials, that were not fire safe,were considered responsible for thefatality (polystyrene in Düsseldorf,polyurethane at Montblanc).

By contrast FOAMGLAS® does not giveoff fumes or toxic gases. In respect tofire safety FOAMGLAS® performs unlikeall other insulation materials, classifiedas “non-combustible”.

FOAMGLAS®

melting point > 1000 °C

According to german DIN 4102-17 themelting point of FOAMGLAS® was test-ed at MPA Braunschweig Institute (D).More than 50 % of the insulationthickness lasted the 90 minute fireperiod without significant damage. Asan official result the melting point is>1000 °C.

General protection withFOAMGLAS® in case of fire:Melt Shield-Effect

Comparable as a thermal protectionshield the melted glas surface of theflame treated area is protecting thelower cell structure. The temperatureon bearing structure is remaining low.FOAMGLAS® is defending the buildingstructure in case of fire.

Superimportant for roofconstruction

The need for structural measures toimprove protection against fire in roofscannot be over-stated. The propagationof fire across a roof can cause totaldamage to a building. Combustible /flammable insulation materials andvapor control layers make up animportant fire load in the roof andinfluence the intensity and duration ofthe fire – vapor control layers and insu-lation can soften and burn. The firecan rapidly spread across the wholeroof and the prevention of totaldestruction is likely to be difficult. Thisdoes not apply to FOAMGLAS®. TheFOAMGLAS® Compact Roof stops thespread of fire across the roof and pre-vents complete combustion at rooflevel. A decelerated development of afire is a precious gain of time for firefighting – the property damage can bereduced and there is more time to res-cue people in danger.

To play safe

A series of fire testing concluded thatcellular glass has excellent fire controlattributes. Relevant test certificates areavailable from the national FOAMGLAS®

subsidiaries. With regard to recentfindings in preventive fire protection,architects and clients should redefinetheir safety requirements, which shouldbe geared towards low-risk manage-ment for the roof construction underfire conditions.

FOAMGLAS® offers superior performanceregarding preventive fire protection.

FOAMGLAS® is a safer product as it is pure and non-combustible cellularglass insulation. Reaction to fire classification: EN standard. Euro Class A1.Closed cell FOAMGLAS® insulation prevents oxygen from passing through

the material to tease the trouble spot.FOAMGLAS® is gas-tight. The transfer of hot gases through the insulation

and their development inside the insulation is avoided. FOAMGLAS® is asafety insulation that forms a barrier against the propagation of the fire. 6

5

4

4 No contribution to thepropagation of the fireunder fire conditions.FOAMGLAS® cellular glassis non-combustible

5 The propagation of fire acrossthe roof can cause totaldamage on the building

6 Conclusion after testprocedure: FOAMGLAS®

melting point > 1000 °C.

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39

Production and composition

FOAMGLAS® manufacturing is twosub-processes. In the first part of theprocess the recycled glass is meltedand subsequently batched with theremaining raw materials and crushedin a mill. In the second sub-process thepowder mix passes in the cellulatingfurnace at high temperature whereFOAMGLAS® cellular glass is foamed –comparable to the process of fermen-tation in bread baking.

Typically 66 %+ of the raw material isrecycled glass. A very low percentageof carbon is added during manufactur-ing which makes the charcoal greycolor of the insulation. In the cellulat-ing furnace the soft, viscous glass isfoamed through release of carbondioxide (CO2) and forms millions of air-tight glass cells enclosing the gas. Thisclosed cell glass structure ensures fullresistance to the transmission of vapor(resistance to water vapor transmissionμ = oo).

Excellent Ecological profile

FOAMGLAS® insulation systems are stable under all con-ditions of use and protects the owner from unexpectedexpenditures for heating or expensive replacement of theinsulation or repair. FOAMGLAS® systems safeguard theenvironment one way or another. They allow for energysaving and, from the cradle to the grave, they do notcontribute to environmental pollution, a safe productconsistent with the principles of building physics. Cellularglass is certified to standards of health and indoor airquality. Ecologically viable product recycling is possible inthe case of building demolition.

1

1 Renewable energy sourcesare increasingly used inFOAMGLAS® production.

2 FOAMGLAS®: millions ofairtight glass cells

2

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40

1

2

5

6

7

3

13

9

9

10 8

11

12

4

Environmentally friendlyproduction

The raw materials used in theFOAMGLAS® production are inherentlymineral and thus environmentallyfriendly. Principal raw material is recy-cled glass. Further raw materials arefeldspar, sodium carbonate, iron oxide,manganese oxide, carbon, sodium sul-fate and sodium nitrate. By the intro-duction of recycled glass into the pro-duction FOAMGLAS® makes a relevantcontribution to the protection of theenvironment.

Minimal environmental pollution

Due to improvements in process engi-neering and in the energy supply (com-ing from hydro electric energy and windturbines) significant progresses has beenachieved in recent years regarding airpollution, greenhouse gas emissions,consumption of energy and resources:The demand for non-renewable

energy was reduced 4.24 kWh/kg.Greenhouse gas emissions have

been halved.The percentage of recycled glass

was progressively increased from0% to 30 and to 66%.The environmental pollution

score (UBP97) was reduced from1619 to 743 points.The eco-indicator (EI99 H, A)

dropped from 0.13 to 0.09 points.

Reduction of the production energymeans that the time period for energyamortization of the investment in ther-mal insulation – as an important evalu-ation unit – is considerably reduced.

FOAMGLAS® manufacturing(Tessenderlo Plant, Belgium)

1 Mixing and batching of the raw materials: Recycled glass, feldspar, sodium carbonate, ironoxide, manganese oxide, sodium sulphate, sodium nitrate.

2 the smelting furnace has a constant temperature of 1250° C.

3 molten glass is drawn out of the furnace.

4 control room for monitoring the production.

5 The glass is drawn off and falls onto the conveyor band where it cools down before enteringinto the ball mill.

6 Production waste is re-introduced into the process.

7 Addition of “carbon black”.

8 ball mill grounds all ingredients into a fine powder before putting into stainless steel moulds.

9 the filled moulds pass through a cellulating oven (Foaming furnace) with a temperature of850° C. This is where the material gains its unique cell structure.

10 energy recovery of heat.

11 The FOAMGLAS® blocks passes through an annealing oven to allow carefully controlledcooling of the block without thermal stress.

12 The blocks are cut to size and sorted by batch. Production Waste returns back into theprocess.

13 FOAMGLAS® slabs are then packaged, labelled and palletized.

14 Finished FOAMGLAS® products are stored and prepared for transport.

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41

0 20000 40000UBP/m2

17157

21807

23790

26571

46056

53232

FOAMGLAS® W+FFOAMGLAS® T4+Polyisocyanorate (PUR)Expanded polystyrene (EPS)Stone woolExtruded polystyrene (XPS)

0 2000 4000 6000 8000

Cellular glass

Stone wool

Expandedpolystyrene (EPS)

Polyisocyanurate (PUR)

Extrudedpolystyrene (XPS)

Waste disponal Production total

14.9888903

26.919902020

200032205210

180043006100

200064908490

UBP/kg

ρ λD* d weight UBP* UBPInsulation per m2 per kg per m2

kg / m3 W / mK m kg / m2 UBP / kg UBP / m2

FOAMGLAS® T4+ 115 0.041 0.21 24.15 903 ~ 21 807

FOAMGLAS® W+F 100 0.038 0.19 19.00 903 ~ 17 157

Polyisocyanorate (PUR) 30 0.026 0.13 3.90 6100 ~ 23 790

Stone wool 120 0.038 0.19 22.80 2020 ~ 46 056

Expanded polystyrene (EPS) 30 0.034 0.17 5.10 5210 ~ 26 571

Extruded polystyrene (XPS) 33 0.038 0.19 6.27 8490 ~ 53 232

* The data are taken from building database KBOB / EMPA, june 2009.** The environemental pollution score (UBP 2006) quantifies the pollution coming from resources, water consumption, emissions into air, water andground and also for the waste disposal. The environment pollution through grey energy and global warming are included in the UBP score.

FOAMGLAS® stands comparisonThe environemental pollution score (UBP 2006**) for the production and waste disposal of FOAMGLAS® is 903 points /kg(insulation). This puts FOAMGLAS® into the pole position in eco-balance. Other insulation products show points between2020 (stone wool) and 8490 (Extruded polystyrene).

Compared to surfaces, with a specified insulation value of 0,20 W/m2K, FOAMGLAS® performs very well. The environ-mental pollution score (UBP 2006**) of cellular glass is 17 157 points (FOAMGLAS® W+F), 21 807 points (FOAMGLAS®

T4+) per square meter. Other insulation products show 23 790 points (PUR), 26 571 points (EPS), 46 056 points (stonewool) and 53 232 points (XPS) for an identical U-value (see table).

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42

Ecological assessment for different thermal Insulation materials.

Prod

uctio

nen

ergy

Reso

urce

s

Nui

sanc

efo

rw

orke

rs

Emis

sion

sdu

ring

prod

uctio

n

Emis

sion

sin

case

offir

e

Long

-ter

mpe

rfor

man

ce

Dis

posa

l/Re

cycl

ing

Glass wool

Stone wool

Cellulose insulation

Pure expanded cork

Expanded polystyrene

Extruded polystyrene

Polyurethane (PUR)

FOAMGLAS®

Very good Acceptable Critical Very critical

Positive ecological assessment for FOAMGLAS®: Source: Cellular glass insulation, a cost-effectiveand environmentally sustainable solution. [Schaumglas-Dammstoff, Wirtschaftlich und umweltver-traglich Dammen.] Markus Welter, Lucerne

World resources

The principal raw material ofFOAMGLAS® production today is select-ed recycled glass (in the past the mainraw material was silica sand). The sup-plies of recycled glass are ample, as inthe construction and other industrieslarge quantities amass and have to bedisposed of as waste. Plastic foaminsulation, however, is produced fromcrude oil, which is a non renewablefossil fuel.

Service life

Having outstanding qualities (mineral,impermeable to water and vapor, resist-ant to acids, non-combustible, high-temperature resistant), cellular glass is avery durable material. The long servicelife of the material has very positiveeffects, ecologically and financially, onthe service-life of the construction and,consequently, on the life of the build-ing. Maintenance and replacementcycles can significantly be reduced bythe use of durable materials.

Emissions / nuisance duringinstallation and use

Cellular glass does not release harmfulor toxic components into the environ-ment. It does not contain green housegases or ozone depleting products, noflame retardant and no con-taminativeor carcinogenic particles and fibers.When recommended installation instruc-tions are followed, cellular glass insula-tion does not produce emissions thatdegrade the environment or health, atproduction, installation nor use.

Emissions in case of fire

Dumping and burning of constructionwaste is most critical for the environ-ment, even in small quantities. In par-ticular plastic foam materials are classi-fied as harmful. In the case of burningof these materials high levels danger-ous emissions are released than in com-bustion in an incineration plant. Studieshave been conducted in Germany onthermal combustion of polystyrene

insulation, which clearly indicated thatreleased fumes are acutely toxic. Seriousadverse health effects in the long-termcannot be excluded. Even with com-bustion in a waste incineration plant,there is high impact to the environ-ment, as annually several thousand tonsof slag and filter residue have to betransported to special disposal sites.The non-combustibility of cellular glassmakes the toxicity issues irrelevant.

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43

FOAMGLAS® – a valuable contribution to theprotection of the environment.

Today FOAMGLAS® is made from 66%+ recycled glass. The FOAMGLAS®

manufacturing concept is waste reduction and green energy utilisation.For the FOAMGLAS® production only energy from renewable sources is

used.Environmental pollution during manufacturing has halved when

compared to 1995.FOAMGLAS® insulation meets all environmental and health

requirements for construction products.At the end of its service-life FOAMGLAS® disposal is simple. One option

is the use of recycled cellular glass as infill in trenches or back-up forburied pipes.FOAMGLAS® has an outstanding service-life, which is clearly the best for

the environment.On balance: FOAMGLAS® is an insulation concept fit for the future that

gives an answer to the genuine concerns for the environment. The systemensures that all demands on performance, durability, environmentalintegrity and sustainability are fulfilled.

3

5

4

3 The percentage of recyclingglass in the FOAMGLAS®

production is from 30 to66 %.

4 Crushed FOAMGLAS® – arecycled filler material fortrenches.

5 FOAMGLAS® Environmentalproduct declaration(according to ISO 14025)confirms the sustainableand ecological value ofFOAMGLAS®.

Waste disposal

In the assessment of insulation materi-als one consideration is repercussionson the environment from waste dis-posal. There are significant differencesbetween the various insulation prod-ucts. In total evaluation – and consid-ering the scarcity of raw materials – asdocumented in eco-balance data sheetsfor the building industry, plastic foaminsulation receives poor ratings for envi-ronmental pollution.

Recycling

Cellular glass being non-combustible,combustion in a waste incineration plantis not a possibility. An option is therecycling of cellular glass as crushedstone (for bedding in road construc-tion) or infill material for noise barriers.Recycled FOAMGLAS® is a safe andsuitable product for these applications,as it is dimensionally stable, neutral forthe environment, inorganic, rot-proofand without any risks for the groundwater (meets ELUAT-test requirements).If crushed and recycled FOAMGLAS® isnot used as bedding or infill material,it can be taken to an inert waste dis-posal site, like crushed concrete orbrick.

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www.foamglas.com

Pittsburgh Corning Scandinavia ABHällebergsvägen 7, SE-44360 StenkullenPhone +46 (0)302 378 56, Fax +46 (0)302 378 [email protected]

HeadquarterPittsburgh Corning Europe SAAlbertkade 1B-3980 TessenderloPhone +32 (0)13 661 721, Fax +32 (0)13 667 854www.foamglas.com

ELUAT – elution test. FOAMGLAS® meets the requirements of ELUAT test (Investigative reportEMPA Nr. 123544 A, based on the successful testing of bitumen coated FOAMGLAS® specimens).According to declaration scheme D.093.09 of the Swiss Technical Directive for Waste Management[Technischen Verordnung über das Abfallwesen (TVA)], FOAMGLAS® is an authorised material forinert waste disposal sites.

Copyright April 2010. The product information and technical details contained in this brochure areaccurate, according to our research and technical programme, at the point of going to press. Wereserve the right to make any changes to the construction or product range, which seam technicallyappropriate, in view of our high standards for product advancement and development. All up-to-date data can be found under the button products on our website:www.foamglas.com

HG-W-1000-0410 B-S-en-BRO-0002

“Standard of quality”

ISO-standardNBN EN ISO9001:2000

Nr. BQ700-0585valid until 2012

FOAMG

LAS®

,the

ecof

rie

ndly insulation with great recycling

potential

The green solution nowwith 66% recycled glass