PROD0002245 KIN00004328_0001 - Grenfell Tower Inquiry

Guidance on fire performance

If you are asked for a formal statement then the following can be used. But this should only be in

response to a request and should not be used proactively. In general no proactive communication is

to be done on the issue, in any form.

GRENFELL TOWER HOLDING STATEMENli

We are shocked by the events at Grenfell Tower

lt would be wholly inaQQrDQriate at this sta e to s eculate about the cause of the fire, or to commen on how it could have been revented or minimised.

If you have a customer that is seeking reassurance about our products, then you can add the following:

We would like to reassure our customers and other stakeholders that Kingspan takes the fir performance of its products extremely seriously, running rigorous tests and providing extensive ~echnical SU QQOrt alon with detailed information about how and where to install them

If you have a customer who has a building or a project on which K15 has been or will be used, and wants reassurance, then you will need to respond in full using what documentation you will already have about the fitness-for-purpose of K15 I K115 in these applications.

General information

We can confirm the Kingspan insulation is suitable for all the applications outlined in the product literature and that it meets the regulatory requirements for those applications.

PROD0002245 KIN00004328_0001

KIN00004328/1

Euroclass ratings

DOP certificate confirm ratings for all products

Example for KlS C-sl,dO (see below what the Sand d ratings mean)

The below table is not to be sent out, just for information

Class Perfol'lnance Fh·e scenm·io and heat attack

Examples of products

Al

A2

B

c

D

E

F

dt'scription 0

contribution to fire

'·

Vety limited contribution to fire

Limited C·O ntributi on to fire Acceptable c o ntrib uti on to fire

0

petfonnance re uirements

Fully developed fire in a room

Single buming item in a room

Sma H i1ame attack

At least 60 kW/m2

'·

40 kW/m2

on a limited area

Flame height of 20mm

Products of nRtlll'al stone, concrek, bricks, ceramic, glass, steel and many metallic products

Products similru· to those of class A] , induding small amounts of or12anic compounds Gypsum boards ·with different (thin) sm-fRce linings f ire retardant ·wood products

Phenolic foam, g:ypsmn boards with different surface linings (thicker than in class B)

Wood products with thickness~ about 10 mm and dem;ity ~ about 400 kg/m3 (depending on end nse) Lmv density fibreboard, plastic based insulation products

Products not tested (no requirements)

Additional classificat ions for smoke production

s3

s2

s1

No limitation of smoke production required

The total smoke production as well as the ratio of increase in smoke production are limited

More stringent criteria than s2 are satisfied

Additional classificat ions for flaming droplets/particles

d2 No limitation

d1 No f laming droplets/particles persisting longer than a given time occurred

dO No f laming droplets/particles occurred

Fire resistance

test we have, see link 0:\Technical\2- Technical Projects\2- Project Resources\2 - Test Reports\13-

Fire Resistance

PROD0002245 Kl N00004328_0002

KIN00004328/2

TR27/TR26

Tes1

BS 4 76-3: 2004 (Extemal fire exposure roof test)

What this test means

A.esult

Dependent on single--ply membrane adopted

These classifications are performance results from "BS 476-3- Fire tests on building structures­

classification & method of test for external fire exposure to roofs." This is a 3 stage test onto a full

roof build up (our boards are not tested in isolation under this standard). This means that the result

is largely dependent on the type of waterproofing being used in conjunction with the insulation

materia l. The grading system used to classify each system has 3 parts.

Roof systems shall be designated by the letters EXT. F. or EXT. S. to indicate whether the test results

apply to a flat (horizontal) or an inclined roof system, respectively. Roof systems subject to

conditions of external fire shall be classified according to both the time of penetration and the

distance of spread of flame along their external surface. Each category designation shall consist of

two letters, e.g. AA, AC, BB, these being determined as specified as below;

Fire Penetration (first letter)

A. Those specimens that have not been penetrated within one hour.

B. Those specimens that are penetrated in not less than 30 min.

C. Those specimens that are penetrated in less than 30 min.

D. Those specimens that are penetrated in the preliminary flame test.

Spread of Flame (second letter)

A. Those specimens on which there is no spread of flame.

B. Those specimens on which the spread of flame is less than or equal to 533 mm, with averaged

results rounded up or down to whole number, as normally practised.

C. Those specimens on which the spread of flame is greater than 533 mm, with averaged results

rounded up or down to whole number, as norma lly practised.

D. Those specimens that continue to burn for five minutes after the withdrawal of the test flame or

spread more than 381 mm across the region of burning in the preliminary test.

EXAMPLE- EXT. F. AA is a flat roofing system with one hour fire penetration resistance on which

there was no spread of flame.

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KIN00004328/3

Examples outlined in BBA certificates

Table 7 Fire ratings for Thermaroof TR27

Standard Substrate VCLI'I lmulation Waterproofing F ixi~ Roof Designation deckllt membranelll meth 111 inclination

18 mm OSB 1.5 mm 100 mm I . 23 mm Sarnafil 2170

timber bituminous Thermaroof

G4 10-12EL Adhesive oo EXT.F.AC

TR27

18 mm OSB 1.4 mm 100 mm 1.2 mm

2170 timber bituminous

Thermaroof Sarnafil Adhesive 45" EXT.S.AB TR27 G4 10-12EL

18 mm OSB 3 mm 100 mm 5 mm thick

2 142S timber bituminous

Thermaroof Sarnafil Adhesive oo EXT.F.AC

TR 27 TG76-12 Felt

12 mm 2 mm Paravapo 90 mm 5 mm thick

plywood SBS metal-lined Thermaroof Parafor Solo Mechanical oo EXT.F.AB

bituminous TR 27 GFM

Graviflex Bonded by

3 mm Paravapo 90 mm Extensive Green BS 476-3 : 2004 12 mm SBS metal-lined Thermaroof Roof System with torching and oo EXT.F.M

plywood bituminous TR27 live Sedum planl

lnsta stik Adhesive

Also don't forget the FM and LPC approvals

BBA certificates

Statements are provided in all certificates, showing test results or statement of product used in

application. For example

K107

9 .3 When insta lled between or under the rahers, the insu la tion wi ll be contained between the roof and internal lin board un til one is destroyed. Therefore, the product w ill not contribute to the development stages of a fire or presen smoke or toxic hazard .

K103

8.2 When properly installed, the boards w ill not add sign ificantly to any existing fire hazard. The boards w ill be contained wi thin the floor by the overlay unti l the overlay itself is destroyed . Therefore, the boards will not contribute to the development stages of a fire or present a smoke or toxic hazard .

K108

9 Behaviour in relation to fire

~\, 9 . 1 The product has a reaction to fire classification of C lass F to BS EN 13501 -1 : 2007.

9.2 The requirements of the national Building Regu lations relating to fire spread in cavity walls can be met in build ings of all purpose groups wi thout the need for cavity barriers, provided the construe ion complies w ith the provisions detai led in:

PROD0002245 Kl N00004328_0004

KIN00004328/4

·~9.5 The product is not classified os 'non-combustible' or of ' limited combustibility', but may be used w ithout .f) height restriction in a wall on, or less than 1 m from, a relevant boundary provided it is insta lled in a cavity that

is between two leaves of masonry at least 75 mm thick, and which has a cavity barrier around all openings in the wall and at the top of the wall head. The use of the product in constructions not meeting this specification is limited to 18 m in height.

K112

9 Behaviour in relation to fire

j~ 9. 1 The product has a reaction to fire classification of Class F to BS EN 1350 1-1 : 2007.

"~9.5 A fire test was undertaken on a 112 mm thick wall-sized assembly to BS 4762 1 : 1987, comprising tJl . 100 mm by 50 mm softwood studs at nomina l 600 mm centres w ith an outer face of 9 mm thick oriented strand

board (OSB) na iled to the studs. Nominal 75 mm thick panels were fitted between studs and held in place by 25 mm square battens nailed to the studs. The exposed surface had nom inal 12.5 mm thick, Type 1 plasterboard nailed to the studs . A sing le timber stud of the same dimension as the vertical studs was fixed across the head and base of the assembly . A loadbearing capacity, integrity and insu lation of 50 minutes was achieved .

9.6 An assembly wi th an overal l thickness of 176 mm was tested to BS EN 1365-1 : 20 12, and the load bearing capacity, integri ty and insulation achieved 49 minutes, hence achieving a fire resistance of REI 45. The build-up of the test specimen was as fol lows:

• Six softwood timber studs (38 mm by 38 mm) at 600 mm centres, clad on the unexposed face w ith a single layer of 9 mm thick OSB .

• An inner layer of 25 mm th ick K 1 1 2 fixed to the OSB, with 70 mm thick K 1 1 2 fitted between the timber studs.

• The exposed surface of the assembly was clad wi th a single layer of 15 mm thick plasterboard , screwed to the timber battens.

KS questions

The render system providers would undertake tests themselves, as it is always the full system that is

tested. i.e including render etc

However K5 has been included in a number of successful 8414 tests in insulated render systems. For

example Alumasc have tested their full system build-up which included K5

Customer would need to contact their render system supplier.

KlS

Kooltherm K15 is a rigid phenolic foam insulation board that is classified as Euroclass C-s1-d0 in

accordance with BS EN 13501-1. Kooltherm K15 has both a BBA certificate and an LABC Registered

Detail which detail its scope for approval and application. The BBA certificate breaks down a number

of the successful large scale fire tests featuring K15. These tests have been completed to show that

the product can meet the onerous performance requirements of BR 135, and subsequently be

approved for use on buildings above 18m in height. To date, Kooltherm K15 has featured in 7

successful large scale BS8414 tests that have met the BR 135 performance criteria (see Appendix B

of attached Technical Bulletin).

Follow standard procedures of sending documents, directing to website Routes to

Compliance: Fac;:ades & Fire Safety section

Then KIL- PB HIGH RISE TECHNICAL [email protected]

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KIN00004328/5

Scotland and KlS

The product is classed as medium risk in Scotland, please just quote the Eco Class rating.

Optim-R

Statement from BDA

9 Behaviour in re lation to fire the product does not prejudice the f ire-resistance properties of walls, flat roofs or so lid concrete ground f loors. Therefore, th' insulation will not contribute to the development stages of a fire or present a smoke or toxic hazard; when properly installed, the product will not add significantly t o any existing f ire hazard; the product will be contained within the bu ilding envelope construction by the overlay until the overlay itself is destroyed. Therefore, the products will not contribute to the development stages of a f ire or present a smoke or toxic hazard; the continuity of fi re resistance must be maintained, for example as described in: England/Wales- Approved Document B, Volume 1, Sect ions 5.11 to 5.12; Scotland·Mandatory Standard 2.2, clause 2.2.1 0; Northern lreland-Technical Booklet E, paragraph 3.21; Ireland Building Regu lations 1997 to 2011 , relevant provisions; the use of the product wil l not affect the f ire rating obtained by f lat roofs when eva luated by assessment or test to BS 476-3:2004 19

.

Note Euro class rating on BDA is shown as C, this is not incorrect and =as changed to E as listed on

DOP.

Worth knowing for Otpim-R with TR27 (EcoTherm) overlay.

Sika LP have already tested a full system to EN 1187 including their Decothane Ultra 20, Decotherm

{25mm) and Optim-R {40mm) which achieved a Broof (t4) classification. Typically it will be the system

supplier that undertakes this test as the result is contingent on the full system performance.

Example reply to home owner as questions

We would like to reassure our customers and other stakeholders that Kingspan takes the fire

performance of its products extremely seriously, running rigorous tests and providing extensive technical support, along with detailed information about how and where to install them.

We assume the product would have been Kingspan Thermapitch TPlO, see attached literature.

Please also see below extract from our attached 3'd party BBA certificate approval.

The Kingspan insulation is suitable for all the applications outlined in the product literature (attached) and that it meets the regulatory requirements for those applications.

Or

We would like to reassure our customers and other stakeholders that Kingspan takes the fire performance of its products extremely seriously, running rigorous tests and providing extensive technical support, along with detailed information about how and where to install them.

The Kingspan insulation is suitable for all the applications outlined in the product literature and that it meets the regulatory requirements for those applications.

PROD0002245 Kl N00004328_0006

KIN00004328/6

Statements that can be used, only if really needed

Kingspan Therma products are comprised of high performance thermoset polyisocyanurate (PIR)

that does not drip or melt and tends to form a carbonaceous char when exposed to fire.

Kingspan Kooltherm thermoset phenolic foam that does not drip or melt and tends to form a

carbonaceous char when exposed to fire.

EcoTherm guidance

We can confirm, EcoTherm insulation do not specify or have a product to be used in multi storey

high rise buildings, above 18mtr behind rainscreen cladding systems. We would always recommend

the use of the insulated Rainscreen systems that have passed the relevant large scale fire tests and

approvals.

Eco-Protect information

To achieve class 0 you need both:

To achieve Class 1 in 8S476 Part 7 Surface Spread of Flame Test (see below)

To achieve a suitable Fire Propagation Index in 8S476 Part 6 Fire Propagation Test (see below)

Class 1 in BS476 Part 7 Surface Spread of Flame Test This specifies a method of test for measuring the lateral spread of flame along the surface of a

specimen of a product orientated in the vertical position under opposed flow conditions, and a

classification system based on the rate and extent of the spread of flame.

BS476 Part 6 Fire Propagation Test

This test measures the amount of heat released when the product under test is burned. To qualify

for Class 0 rating the material or the surface of a composite product must achieve a fire propagation

index (I)- overall test performance- of not more than 12 and sub-index (i1)- first three minutes of

test- of not more than 6.

What this means is that in the test conditions, when the sample is exposed to the ignition source,

the lateral spread of flame does not exceed 165mm within 10 minutes.

PROD0002245 Kl N00004328_0007

KIN00004328/7