Dimensions Ground Floor Area (m 2 ) 167,20 Ground Floor Height (average) 2,78 Living Area (m 2 ) 43,60 Ventilation Air Permeability Test (Q50) 0,05 Ventilation Method MVHR Xpelair Xcell 300 QVI Fabric Ground Floor (W/m 2 K) 0,119 Sunroom Floor 0,129 Monopitch Roofs (W/m 2 K) 0,116 Flat Roof 0,132 External Walls (W/m 2 K) 0,114 Doors (W/m 2 K) 0,7 Window- U-Value (W/m 2 K) 0,7 Thermal bridging Factor (W/m 2 k) 0,02 Space Heating Main Space Heating Heat Pump & LST radiators Kensa Shoebox (6kW) & Jaga Strada Low H2O Efficiency of Main Heating (%) 297,00% Water Heating Water Heating Heat Pump Renewables Solar Water Heating 4 panels Kingspan FPW21 Flat Plate Aperture: 1.92 m2 Photovoltaic panels 4 panels Dimplex DXPVM250P6C-30 WW Ground Floor Area (m 2 ) 167,20 Ground Floor Height (average) 2,78 Living Area (m 2 ) 43,60 Air Permeability Test (Q50) 0,35 Ventilation Method MVHR Xpelair Xcell 300 QVI Ground Floor (W/m 2 K) 0,159 Sunroom Floor 0,193 Monopitch Roofs (W/m 2 K) 0,159 Flat Roof 0,132 External Walls (W/m 2 K) 0,168 Doors (W/m 2 K) 0,7 Window- U-Value (W/m 2 K) 0,7 Thermal bridging Factor (W/m 2 k) 0,08 Main Space Heating Pellet stove with back boiler & radiators Alessia 15B Pellet Stove Boiler Efficiency of Main Heating (%) 96,29% Water Heating Pellet stove with back boiler Renewables Solar Water Heating 3 panels Kingspan FPW21 Flat Plate Aperture: 1.92 m2 Dimensions Ventilation Fabric Space Heating Water Heating JAGA STRADA LOW H2O RADIATOR* KENSA 6kW SHOEBOX HEAT PUMP GROUND ARRAYS (CLOSED LOOP SYSTEM, ‘SLINKY’) HONEYWELL EVOHOME CONTROLLER + WALL BRACKET smartphone wireless relay box wireless cylinder thermostat wireless relay box JUNCTION BOX 210 LITER GLEDHILL HOT WATER CYLINDER (95 LITER DEDICATED SOLAR STORAGE) (4 no.) KINGSPAN FLAT PLATE SOLAR COLLECTOR FPW21 JAGA STRADA LOW H2O RADIATOR* JAGA STRADA LOW H2O RADIATOR* JAGA STRADA LOW H2O RADIATOR* JAGA STRADA LOW H2O RADIATOR* JAGA STRADA LOW H2O RADIATOR* JAGA STRADA LOW H2O RADIATOR* JAGA STRADA LOW H2O RADIATOR* Press firmly to secure the tape on both sides, ensuring there is sufficient back-pressure, for example using a pro clima PRESSFIX to do the job effectively and to protect your hands. The substrate onto which the tape is applied should be load bearing and stable, dry, smooth and free from dust, silicon and grease. Brush down all surfaces and vacuum clean or wipe with a cloth if necessary. Seal corners using pro clima TESCON PROFIL corner sealing tape. Select a 1.2 to 4.8 cm split if you wish to stick onto plaster or cover cladding, otherwise you can split the tape 2.5 to 3.5 cm. Prefold the tape into an L-shape and remove the release paper on one side. Push the side of the tape which still has the release paper on into the corner and stick down the exposed side of the tape. Next, remove the second strip of release paper and stick down the second side. Stick the membrane to the cladding frame so that it is windproof and water tight using TESCON PROFIL. Thanks to the split release paper it is possible to stick the tape first to the membrane and then, sub- sequently, to the window. Interior window frame: First side 3a 3c 3b 1 2 4 Exterior window frame Interior window frame: Second side Interior window frame: Pressing the tape on Selecting the required division Preparation Seal all round penetrations with EPDM grummets. Cable grummets have a self-adhesive. Stick pipe grummets to the substrate with TESCON No.1 to form an air-tight seal. Press firmly to secure the adhesive tape. All surfaces must be stable, dry, smooth and free of dust, silicone and grease. Sweep or vacuum clean and wipe all surfaces. Place the TESCON No.1 centrally over the overlap, unroll and stick down over the joint continuously. Press firmly to secure the tape, ensuring there is sufficient back-pressure. To create airtight joints between vapour checks and smooth, non-mineral surfaces such as wood-based panels or planed wood, place TESCON No.1 centrally over the joint, unroll and stick down over the joint continuously. Use pro clima CONTEGA PV for reliable joints to gypsum based plaster. Affix fleece to the membrane with tape and use ORCON F to affix it to the masonry at intervals. Embed the reinforcement and the fleece in the middle layer of gypsum based plaster. Seal corners using pro clima TESCON PROFIL corner tape. Remove one strip of the split release paper and press down the first piece. Then remove the second strip of the release paper and press down the second piece. Sealing vapour checks indoors Sealing internal junctions 3 5 4 1 2 6 Details for taping corners Details for sealing unplastered blockwork Details for pipes and cables Preparation Atmosphere Discharge Dwelling Supply Dwelling Extract Atmosphere Intake 4-150/160mm Ø Spigots Xcell 300QV KITCHEN DINING LIVING HALL WC BATHROOM BEDROOM 2 14m² BEDROOM 1 15m² STUDIO 2/ BEDROOM 4 20m² STUDIO 1/ BEDROOM 3 22m² MVHR (over) beam at 2625mm workbench storage Clear roof over Clear roof over Exhaust air outlet at higher level than air intake access hatch over extract air out fresh (pre-warmed) air in c e iling a t 240 0mm c e iling a t 2 400mm ducts at 2500mm F ceiling at 2400mm ducts at 2500mm beam at 2625mm W C duc t s a t 2 5 00 m m m m m m 2 4 4 0 0 0 0 m m m m m m m m m m m m m m m m duc uc m t t m s s a t 2 5 00 m m m Heat recovery efficiency S.F.P (W/l/s) KITCHEN + 1 additional wet room 100% Variable 0.65 91% E.S.T. Best Practice performance compliant Yes SAP Appendix Q Guide €0 €10,000 €20,000 €30,000 €40,000 €50,000 €60,000 €70,000 10 years 20 years 30 years 40 year 50 years 60 years Part L House Compact nZEB House nZEB House €27,971 €15,205 €17,153 €15,095 €11,557 €0 €5,000 €10,000 €15,000 €20,000 €25,000 €30,000 Option A Option B Option C Option D Option E Series1 €30,166 €22,399 €32,680 €29,330 €29,212 €0 €7,788 -€2,513 €836 €954 -€5,000 €0 €5,000 €10,000 €15,000 €20,000 €25,000 €30,000 €35,000 Option A Option B Option C Option D Option E Net savings Total Life Cycle Cost Water Content in Mass-% SW Wall SW Wall with 1% driving rain N Wall N Wall with 1% driving rain 01.10.2017 08.05.2018 13.12.2018 20.07.2019 24.02.2020 02.10.2020 Time 0.5 0.8 1.1 1.4 1.7 Water content [M.-%] 1.55% SW Wall with 1% driving rain - Water Content Gutex Rockwool (outer layer) Rockwool (whole layer) SmartPly Birch Plywood 01.10.2017 08.05.2018 13.12.2018 20.07.2019 24.02.2020 02.10.2020 Time 0.0 3.2 6.4 9.6 12.8 16.0 Water content [M.-%] Relative humidity - SW Wall with 1% driving rain Gutex Rockwool SmartPly Birch plywood 01.10.2017 08.05.2018 13.12.2018 20.07.2019 24.02.2020 02.10.2020 Time 34.5 45.4 56.3 67.2 78.1 Relative humidity [%] 80% 56% Relative Humidity - Flat Roof PIR Plywood Deck Birch Plywood 01.10.2017 01.10.2018 01.10.2019 02.10.2020 02.10.2021 02.10.2022 Time 41.5 49.9 58.3 66.7 75.1 Relative humidity [%] 80% Relative Humidity - South facing Monopitch Roof Gutex Rockwool SmartPly Birch Plywood 01.10.2017 08.05.2018 13.12.2018 20.07.2019 24.02.2020 02.10.2020 Time 9.5 27.9 46.3 64.7 83.1 Relative humidity [%] 56% 80% Water Content - South facing Monopitch Roof Gutex Rockwool SmartPly Birch Plywood 01.10.2017 08.05.2018 13.12.2018 20.07.2019 24.02.2020 02.10.2020 Time 0.0 8.6 17.2 25.8 34.4 43.0 Water content [M.-%] Environment Health and Wellbeing Economic Quality Assurance Sustainable Location Overall points scored total points possible 2425 1550 1400 925 1070 7370 689 512.2 795 425 335 2756.2 0 1000 2000 3000 4000 5000 6000 7000 8000 points scored total points possible 14% 17% 29% % 16% Environment Health and Wellbeing Economic Quality Assurance Sustainable Location north KITCHEN DINING LIVING HALL WC BATHROOM BEDROOM 2 14m² BEDROOM 1 15m² STUDIO 2/ BEDROOM 4 20m² STUDIO 1/ BEDROOM 3 22m² BB workbench storage Clear roof over Clear roof over AA F north GROUND FLOOR PLAN scale 1.100 Total Internal Floor Area: 167.2 m2 Living Room Area: 43.6m2 ROOF CONSTRUCTION U-value=0.116 W/m2K 75mm Corrugated metal cladding. 75mm Ventilated air cavity - 50mm SW horizontal counter battens and 25mm SW vertical battens. 22mm Gutex Multiplex top sheathing board (wind-tight layer) with taped joints. 300mm Z-Joists -100x50mm and 75x50mm SW studs with 300mm OSB web with Rockwool Flexi insulation. 12.5mm Smartply ProPassiv (vapour barrier/airtight layer) with all joints taped with Pro clima Tescon no.1 tape. 50mm service cavity with 50x50mm SW horizontal battens 12mm Birch plywood treated with fire-retardent Burnblock. WALL CONSTRUCTION U-value= 0.114 W/m2K 19mm Larch T+G cladding attached vertically. 50x50mm horizontal SW battens. 25x50mm SW counter battens. 20mm Gutex fibre board (joints treated with Tescon Primer RP and then taped with Pro clima Tescon no.1 tape. 300mm Z-Joists -100x50mm and 75x50mm SW studs with 300mm OSB web with Rockwool Flexi insulation. 12.5mm SmartPly ProPassiv airtight racking boards (joints taped with Pro clima Tescon no.1 tape) 50x50mm horizontal SW battens to service cavity. 18mm Birch plywood treated with fire-retardent Burnblock. 75x50mm SW purlin to take corrugated metal sheeting. Grommet to SW timber stud. 100x50mm SW stud extends to provide 500mm overhang, continuously taped to Tescon Primer RP treated Gutex. Outer and inner SW timber studs of Z-joist of Wall and Roof bolted together and cut. Pro clima Tescon no.1 tape to joint between 12.5mm SmartPly ProPassiv racking board in wall and roof. Pro clima Tescon no.1 tape to joint between 12.5mm SmartPly ProPassiv racking board in wall and roof. Gutex treated with Tescon Primer RP taped over Tescon Profil around window seal. Window lintel: 18mm OSB boards, 150x50mm SW studs filled with Rockwool Flexi insulation. 25mm Kingspan Kooltherm K12 (Phenolic insulation) to underside of window lintel. Window taped internally to SmartPly ProPassiv Window taped externally to Tescon Primer RP treated Gutex using Tescon Profil. Larch cladding to underside and side of window ope. Munster Joinery PassiV AluClad window. ROOF CONSTRUCTION U-value=0.116 W/m2K 75mm Corrugated metal cladding. 75mm Ventilated air cavity - 50mm SW horizontal counter battens and 25mm SW vertical battens. 22mm Gutex Multiplex top sheathing board (wind-tight layer) with taped joints. 300mm Z-Joists -100x50mm and 75x50mm SW studs with 300mm OSB web with Rockwool Flexi insulation. 12.5mm Smartply ProPassiv (vapour barrier/airtight layer) with all joints taped with Pro clima Tescon no.1 tape. 50mm service cavity with 50x50mm SW horizontal battens 12mm Birch plywood treated with fire-retardent Burnblock. ROOF CONSTRUCTION U-value=0.116 W/m2K 75mm Corrugated metal cladding. 75mm Ventilated air cavity - 50mm SW horizontal counter battens and 25mm SW vertical battens. 22mm Gutex Multiplex top sheathing board (wind-tight layer) with taped joints. 300mm Z-Joists -100x50mm and 75x50mm SW studs with 300mm OSB web with Rockwool Flexi insulation. 12.5mm Smartply ProPassiv (vapour barrier/airtight layer) with all joints taped with Pro clima Tescon no.1 tape. 50mm service cavity with 50x50mm SW horizontal battens 12mm Birch plywood treated with fire-retardent Burnblock. WALL CONSTRUCTION U-value= 0.114 W/m2K 19mm Larch T+G cladding attached vertically. 50x50mm horizontal SW battens. 25x50mm SW counter battens. 20mm Gutex fibre board (joints treated with Tescon Primer RP and then taped with Pro clima Tescon no.1 tape. 300mm Z-Joists -100x50mm and 75x50mm SW studs with 300mm OSB web with Rockwool Flexi insulation. 12.5mm SmartPly ProPassiv airtight racking boards (joints taped with Pro clima Tescon no.1 tape) 50x50mm horizontal SW battens to service cavity. 18mm Birch plywood treated with fire-retardent Burnblock. 50x50mm SW purlin to take corrugated metal sheeting. 100x50mm SW stud extends to provide 500mm overhang, continuously taped to Tescon Primer RP treated Gutex. Grommet to SW timber stud. Outer and inner SW timber studs of Z-joist of Wall and Roof bolted together and cut. Pro clima Tescon no.1 tape to joint between SmartPly ProPassiv in wall and roof. FLAT ROOF CONSTRUCTION U-value=0.132 W/m2K EPDM membrane/ PVC Wolfin M 145-290mm tapered Kingspan TR26 + TT46 at a fall of 1:80 Isocell Airstop Diva Forte membrane taped to plywood up stand. 18mm external grade plywood deck 225mm SW joists at 600mm c/c 12mm Birch Pywood treated with fire-retardent Burnblock . WALL CONSTRUCTION U-value= 0.114 W/m2K 19mm Larch T+G cladding attached vertically. 50x50mm horizontal SW battens. 25x50mm SW counter battens. 20mm Gutex fibre board (joints treated with Tescon Primer RP and then taped with Pro clima Tescon no.1 tape. 300mm Z-Joists -100x50mm and 75x50mm SW studs with 300mm OSB web with Rockwool Flexi insulation. 12.5mm SmartPly ProPassiv airtight racking boards (joints taped with Pro clima Tescon no.1 tape) 50x50mm horizontal SW battens to service cavity. 18mm Birch plywood treated with fire-retardent Burnblock . Larch cladding and battens cut with run off profile. Lead flashing over DPC and on top of EPDM membrane. DPC under Gutex MultiTherm and taped to ext. grade plywood. 150mm upstand to EPDM membrane with SW angle to edge of roof. Beam: 18mm OSB boards, 150x50mm SW studs filled with Rockwool Flexi insulation. Proprietry timber door and frame with paint finish. Airtight vapour permeable membrane to underside of beam and flat roof joists. Pro clima Tescon no.1 tape to joint between 12.5mm SmartPly ProPassiv racking board in wall and roof. FLOOR CONSTRUCTION U-value= 0.119 W/m2K 25mm Solid Oak floor boards with 10mm expansion gap to perimeter. 3mm Sheepwool acoustic insulation 18mm OSB vapour barrier 300mm Steico I-beam with 300mm Rockwool Flexi insulation on 18mm fibre cement board Pro clima Tescon no.1 tape to Tescon Primer RT treated Gutex joint. 100x50mm structural grade SW footer. 200x20mm Solid oak skirting board. DPC Pro clima Tescon no.1 tape to joint between 18mm external grade OSB in floor and 12mm SmartPly ProPassiv racking board in wall. 10mm expansion gap for floor boards. 300x50mm structural grade SW footer bolted to steel base and concrete pile to Engineer's specifications. WALL CONSTRUCTION U-value= 0.114 W/m2K 19mm Larch T+G cladding attached vertically. 50x50mm horizontal SW battens. 25x50mm SW counter battens. 20mm Gutex fibre board (joints treated with Tescon Primer RP and then taped with Pro clima Tescon no.1 tape. 300mm Z-Joists at 600mm c/c -100x50mm and 75x50mm SW studs with 300mm OSB web with Rockwool Flexi insulation. 12.5mm SmartPly ProPassiv airtight racking boards (joints taped with Pro clima Tescon no.1 tape) 50x50mm battens to service cavity. 18mm Birch plywood treated with fire-retardent Burnblock . Poprietry powder coated aluminium cill. 50mm Kingspan Kooltherm K12 board cut to fit under aluminium cill. 18mm ext. grade plywood cill support. 25mm Kingspan Kooltherm K12 thermal break. DPC running the whole width of the opening and taped to primed Gutex MultiTherm sheathing. 50mm Kingspan Kooltherm K12 board. 200x25mm planed timber window cill. Window and SmartPly sealed with membrane and tape. 18mm OSB to brace trimming timbers and provide base for window installation. 100x50mm SW trimming timbers to brace Z-joists. Trimming Z-joist at 300mm c/c to larger window opes. Results Energy rating A3 Energy Value ( kWh/m 2 /yr) 64 CO 2 Emissions Indictor (kg/yr/m2) 5,38 CPC 0,145 EPC 0,366 Part L renewable Contribution ( kWh/m 2 yr) 48,60 Air tight layer extract air fresh (pre warmed)air Wind tight layer SYSTEMS + RENEWABLES SPACE HEATING + HOT WATER + ELECTRICITY PART L HOUSE DEAP RESULTS + SPECIFICATIONS NZEB HOUSE DESIGN + CONTEXT FABRIC + U-VALUES WUFI PRO HYGROTHERMAL ANALYSIS LIFE CYCLE COST ANALYSIS HOME PERFORMANCE INDEX AIRTIGHTNESS + VENTILATION STRATEGY NZEB HOUSE TYPICAL WALL, FLOOR AND ROOF BUILD UP PART L HOUSE TYPICAL WALL, FLOOR AND ROOF BUILD UP WEST ELEVATION WEST ELEVATION EAST ELEVATION NORTH ELEVATION SOUTH ELEVATION The site is located County Clare, on the edge of Special Area of Conservation in the heart of The Burren. The land was purchased back in the early 90’s in order to protect it from bulldosing and a fruit farm was planted. The site for the house is nestled between hazel covered Burren limestone and raspberry fields and an apple orchard. It over looks a scenic valley steeped in history with Galway bay in the distance. The house design is intended to have as little impact on the site as possible. The use of materials are to be of a natural pallet which will minimise the visual effect of the house. It is the intention that the clients will build it and that the finishes inside will be as free of VOCs as possible. The clients are planning to set up two studios with in the house, one for weaving and one for painting. The most important demands were to maximise the potential of the views and of natural daylighting. SITE LAYOUT 1.50 SECTION WITH AIRTIGHT AND WINDTIGHT LAYER AND VENTILATION STRATEGY TESCON NO.1 TAPE + TESCON PROFIL TAPE APPLICATION GUIDE FOR SEALING BETWEEN BOARDS, AT JUNCTIONS AND AROUND DOOR AND WINDOW OPES. PLAN SHOWING MVHR DUCT LAYOUT XPELAIR XCELL QVI SYSTEM MVHR - C02 MONITORING + SMOKE SENSOR - SUMMER BYPASS - 91% EFFICIENCY north ROOF PLAN WITH PV ARRAY AND SOLAR FLAT PLATES PSITHERM LINEAR THERMAL BRIDGE ANALYSIS + Ψ FACTOR DT774 - NZEB Project: Residential Dwelling - MAY 2017 Mélina Sharp - D15128874 Video of base case Flat Roof at the end of the five years simulation. VELUX Daylight Visualizer results. Living Area recieves 45.8% daylight factor 2 or higher. A methodology for measuring the sustainable qualities of new houses in Ireland, set up bt the Irish Green Building Council. A label for quality sustainable residential development, allowing the general public to compare the sustainability of properties. It is similar to schemes used in the commercial sector such as BREEAM and LEED. It is has five main categories; Environment, Economic, Health and Wellbeing, Quality Assurance and Sustainable Location. Following the completion of the tool inputs and gathering all the evidence required, the house is ‘certified’ with a HPI index and a total score of 41%. Chart showing the achieve HPI scores against the total possible scores for the nZEB House. Chart showing a breakdown of the achieve HPI scores for the nZEB House. PART L House Compact House PART L House Compact House nZEB House Energy Costs over 30 years. Break even point (Life Cycle Costs over different timescales) Comparison of Layouts: ‘Option B’ Compact Design vs. ‘Options A,C,D,E’ Original Layout Comparison of Life Cycle Costs and Net Savings. nZEB House As can be seen from the chart to the right, after 30 years the Part L House becomes less economical than the nZEB House and as energy bills are higher it costs more and more as time goes by. The Compact (nZEB) House becomes more economical than the Part L straight away due to reduce initail costs. PERIOD OF CALCULATION: Primarily a period of 3 years is used as it is a light weight construction and as the results showed that equilibrium was reached after the rst few months it is an appropriate length of calculation. CLIMATE DATA: The external climate is simulated using Shannon Airport weather data file as the house will be built in North Clare. The internal climate data is EN 15026 WTA 6-2 with ‘Medium Moisture Load’ giving an internal RH of between 30-60%. ORIENTATION: South-West is seen as the direction of the prevailing wind in the climate file used. This will be subject to the most driving rain. The North facing wall is also tested as this will have the least amount of heat from the sun and therefore less drying out capacity. MOULD GROWTH ON INTERNAL SURFACES BS 5250:2016, ‘The design of the structure and the heating system should ensure that, over the coldest month, the average relative humidity at internal surfaces does not exceed 80%, the limit for mould growth.’ INTERSTITIAL CONDENSATION BS 5250:2016, ‘Any interstitial condensation which might occur in winter should evaporate during the following summer, preventing an accumulation of moisture year on year.’ DEGRADATION OF MATERIALS BS 5250:2016 states that ‘The risk of degradation of materials should be assessed in terms of the maximum level of condensate which might occur.’ From the graphs it can be demonstrated that there is littlle risk of mould growth, interstital condensation or degradation of materials in the constructions modelled. WALL BUILD UP MONOPITCH ROOF BUILD UP FLAT ROOF BUILD UP A series of key linear thermal bridge calculations were made to determine the psi-values of each linear junction. fRSI for each junction was also calculated to demonstrate compliance with Part L 2011 Appendix D, ‘For dwellings, the value of Frsi should be greater than or equal to 0.75, so as to avoid the risk of mould and surface condensation.’ The SEAI Ψ-factor tool was used to record the lengths of each junction and the modelled (and estimated) Psi values were inputted. The result was a Ψ-factor 0.0192 W/m2K. The fRSI values of the modelled junctions are all greater than 0.75 and thus fulfil the requirement set out in Part L to avoid the risk of surface or interstitial condensation. Ψ-factor 0.0192 W/m2K fRSI > 0.75 (NZEB HOUSE) ELECTRICITY GENERATION: DIMPLEX 250 W HIGH PERFORMANCE POLYCRYSTALLINE SOLAR PV MODULES. -14.5% EFFICIENCY NZEB HOUSE SPACE AND HOT WATER HEATING SYSTEMS (NZEB HOUSE) SPACE + HOT WATER HEATING: KENSA SHOEBOX 6 KW GROUND SOURCE HEAT PUMP. (PART L HOUSE) SPACE + HOT WATER HEATING: ALESSIA 15 KW PELLET STOCE WITH BACK BOILER TO FEED RADIATORS AND DOMESTIC HOT WATER STORAGE TANK. 64 64 kWh/m²/yr 5.38 kg/yr/m² XPELAIR XCELL 300 QVI MVHR Unit t e l i o T n e h c t i K m o o r h t a B m o o r n u S Attic Extract Air Fresh Air Top of internal partition taped to Smartply ProPassiv. 12.5mm Smartply ProPassiv Pro clima Tescon no.1 tape to joint between SmartPly ProPassiv racking board in wall and roof. Dining/Living fresh air inlet (behind) Fresh air duct to Studios/ Bedrooms Air flow from inlet rooms to extract rooms Bedroom fresh air inlet Bedroom fresh air inlet 2 m o o r d e B 1 m o o r d e B 20mm Gutex fibre board (joints treated with Tescon Primer RP and then taped with Pro clima Tescon no.1 tape . Joint treated with Tescon Primer RP and then taped with Pro clima Tescon no.1 tape . 18mm OSB taped at joints and junctions to internal partitions and exterior walls. 18mm fibre cement board taped to I-joists with double sided butyl rubber Tescon Naidec. PVC Wolfin M Isocell Airstop Diva Forte membrane taped to plywood up stand and airtight membrane wrapping around beam. Air inlet and outlet vents fitted with grommets to form a seal with the Smartply ProPassiv board airtight layer. Projecting timbers taped and grommets fitted inside larch cladding. Extract air Extract air Extract air 23 kWh/m²/yr 5.05 kg/yr/m² Results Energy rating A1 Energy Value ( kWh/m 2 /yr) 3 CO 2 Emissions Indictor (kg/yr/m2) 5,05 CPC 0,136 EPC 0,133 Part L renewable Contribution ( kWh/m 2 yr) ,50 Glass Aluminium Aluminium Copper Brass EPDM Rockwool KM 559829 BS EN 12975 Thermal solar systems and components SOLAR HOT WATER: KINGSPAN FW21 FLAT PLATES Airtightness target is 0.05 Air Changes per Hour or a Q50 value of 1m³/hr/m² measured @ 50pa Gutex MultiTherm and Gutex MultiTop form for a large part of the windtight layer. As the pitch is 15 degrees only all joints to be taped. SmartPly ProPassiv forms, for a large part, the airtight layer and is to be taped at all junctions, joints and penetrations. Windows/Doors taped to OSB and SmartPly ProPassiv. Service cavity to prevent penetration of airtight layer. All pipework and ducting to be sealed with tapes/ grommets. An Xpelair Xcell QVI system is specified to provide Mechanical Ventilation with Heat Recovery. J1 - EAVES PSI = -0.0052 W/MK fRSI = 0.93 MIN. SURFACE TEMP.= 18.68°C J2 - APEX PSI = 0.00418W/MK fRSI = 0.92 MIN. SURFACE TEMP.= 18.35°C J14 - FLAT ROOF TO WALL PSI = -0.07546 W/MK fRSI = 0.96 MIN. SURFACE TEMP.= 19.22°C J6 - WINDOW CILL PSI = -0.00818 W/MK fRSI = 0.96 MIN. SURFACE TEMP.= 19.17°C J4 - FLOOR TO WALL PSI = 0.00549 W/MK fRSI = 0.91 MIN. SURFACE TEMP.= 18.29°C
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DimensionsGround Floor Area (m2) 167,20Ground Floor Height (average) 2,78Living Area (m2) 43,60VentilationAir Permeability Test (Q50) 0,05Ventilation Method MVHR
Xpelair Xcell 300 QVIFabricGround Floor (W/m2K) 0,119Sunroom Floor 0,129Monopitch Roofs (W/m2K) 0,116Flat Roof 0,132External Walls (W/m2K) 0,114Doors (W/m2K) 0,7Window- U-Value (W/m2K) 0,7Thermal bridging Factor (W/m2k) 0,02Space Heating
Main Space Heating Heat Pump & LST radiators
Kensa Shoebox (6kW) &Jaga Strada Low H2O
Efficiency of Main Heating (%) 297,00%Water Heating
Water Heating Heat Pump
RenewablesSolar Water Heating 4 panels
Kingspan FPW21 Flat PlateAperture: 1.92 m2
Photovoltaic panels 4 panelsDimplex
DXPVM250P6C-30 WW
Ground Floor Area (m2) 167,20Ground Floor Height (average) 2,78Living Area (m2) 43,60
Air Permeability Test (Q50) 0,35Ventilation Method MVHR
Xpelair Xcell 300 QVI
Ground Floor (W/m2K) 0,159Sunroom Floor 0,193Monopitch Roofs (W/m2K) 0,159Flat Roof 0,132External Walls (W/m2K) 0,168Doors (W/m2K) 0,7Window- U-Value (W/m2K) 0,7Thermal bridging Factor (W/m2k) 0,08
Main Space Heating Pellet stove with back boiler & radiators
Alessia 15B Pellet Stove Boiler
Efficiency of Main Heating (%) 96,29%
Water Heating Pellet stove with back boiler
RenewablesSolar Water Heating 3 panels
Kingspan FPW21 Flat PlateAperture: 1.92 m2
Dimensions
Ventilation
Fabric
Space Heating
Water Heating
JAGA STRADA LOW H2O RADIATOR*
KENSA 6kW SHOEBOX HEAT PUMP
GROUND ARRAYS
(CLOSED LOOP SYSTEM, ‘SLINKY’)
HONEYWELLEVOHOME CONTROLLER
+ WALL BRACKET
smartphone
wirelessrelay box
wirelesscylinder
thermostat
wirelessrelay box
JUNCTIONBOX 210 LITER GLEDHILL
HOT WATER CYLINDER(95 LITER DEDICATED
SOLAR STORAGE)
(4 no.) KINGSPAN FLAT PLATE SOLAR COLLECTOR
FPW21
JAGA STRADA LOW H2O RADIATOR*
JAGA STRADA LOW H2ORADIATOR*
JAGA STRADA LOW H2ORADIATOR*
JAGA STRADA LOW H2ORADIATOR*
JAGA STRADA LOW H2ORADIATOR*
JAGA STRADA LOW H2ORADIATOR*
JAGA STRADA LOW H2ORADIATOR*
Press fi rmly to secure the tape on both sides,
ensuring there is suffi cient back-pressure, for
example using a pro clima PRESSFIX to do the job
effectively and to protect your hands.
The substrate onto which the tape is applied
should be load bearing and stable, dry, smooth and
free from dust, silicon and grease. Brush down all
surfaces and vacuum clean or wipe with a cloth if
necessary.
Seal corners using pro clima TESCON PROFIL corner
sealing tape. Select a 1.2 to 4.8 cm split if you wish
to stick onto plaster or cover cladding, otherwise
you can split the tape 2.5 to 3.5 cm.
Prefold the tape into an L-shape and remove the
release paper on one side. Push the side of the tape
which still has the release paper on into the corner
and stick down the exposed side of the tape.
Next, remove the second strip of release paper and
stick down the second side.
Stick the membrane to the cladding frame so that it
is windproof and water tight using TESCON PROFIL.
Thanks to the split release paper it is possible to
stick the tape fi rst to the membrane and then, sub-
sequently, to the window.
Interior window frame: First side
3a
3c3b
1 2
4
Exterior window frameInterior window frame: Second side Interior window frame: Pressing the tape on
Selecting the required divisionPreparation
Seal all round penetrations with EPDM grummets.
Cable grummets have a self-adhesive. Stick pipe
grummets to the substrate with TESCON No.1 to
form an air-tight seal. Press firmly to secure the
adhesive tape.
All surfaces must be stable, dry, smooth and free of
dust, silicone and grease. Sweep or vacuum clean
and wipe all surfaces.
Place the TESCON No.1 centrally over the overlap,
unroll and stick down over the joint continuously.
Press firmly to secure the tape, ensuring there is
sufficient back-pressure.
To create airtight joints between vapour checks and
smooth, non-mineral surfaces such as wood-based
panels or planed wood, place TESCON No.1 centrally
over the joint, unroll and stick down over the joint
continuously.
Use pro clima CONTEGA PV for reliable joints to
gypsum based plaster. Affix fleece to the membrane
with tape and use ORCON F to affix it to the masonry
at intervals. Embed the reinforcement and the fleece
in the middle layer of gypsum based plaster.
Seal corners using pro clima TESCON PROFIL corner
tape. Remove one strip of the split release paper and
press down the first piece.
Then remove the second strip of the release paper
and press down the second piece.
Sealing vapour checks indoors Sealing internal junctions
3
54
1 2
6
Details for taping corners Details for sealing unplastered blockwork Details for pipes and cables
Preparation
AtmosphereDischarge
DwellingSupply
DwellingExtract
AtmosphereIntake
4-150/160mm ØSpigots
Xcell 300QV
KITCHEN
DINING
LIVING
HALL
WCBATHROOM
BEDROOM 214m²
BEDROOM 115m²
STUDIO 2/BEDROOM 420m²
STUDIO 1/BEDROOM 322m²
MVHR(over)
beam at2625mm
workbench
storage
Clear roof over
Clear roof over
Exhaust air outlet athigher level than airintake
accesshatchover
extract air out
fresh (pre-warmed) air in
c e iling a t 2400mm
c e iling a t 2400mm
ducts at 2500mm
F
ceiling at2400mm
ducts at 2500mm
beam at2625mm
WCducts at 2500mmmmmm
2440000mmmmmmmmmmm
mmmmmducuc
mtt
mss at 2500mmm
Heatrecoveryefficiency
S.F.P(W/l/s)
KITCHEN +1 additional wet room
100% Variable 0.65 91%
E.S.T.Best Practiceperformance
compliant
Yes
SAP Appendix Q Guide
€0
€10,000
€20,000
€30,000
€40,000
€50,000
€60,000
€70,000
10 years 20 years 30 years 40 year 50 years 60 years
Part L HouseCompact nZEB HousenZEB House
€27,971
€15,205
€17,153
€15,095
€11,557
€0
€5,000
€10,000
€15,000
€20,000
€25,000
€30,000
Option A Option B Option C Option D Option E
Series1€30,166
€22,399
€32,680€29,330 €29,212
€0
€7,788
-€2,513
€836 €954
-€5,000
€0
€5,000
€10,000
€15,000
€20,000
€25,000
€30,000
€35,000
Option A Option B Option C Option D Option E
Net savings
Total Life Cycle Cost
Water Content in Mass-%
SW Wall SW Wall with 1% driving rain N WallN Wall with 1% driving rain
01.10.2017 08.05.2018 13.12.2018 20.07.2019 24.02.2020 02.10.2020Time
0.5
0.8
1.1
1.4
1.7
Wat
er c
onte
nt [M
.-%]
1.55%
SW Wall with 1% driving rain - Water Content
Gutex Rockwool (outer layer)Rockwool (whole layer) SmartPly Birch Plywood
01.10.2017 08.05.2018 13.12.2018 20.07.2019 24.02.2020 02.10.2020Time
0.0
3.2
6.4
9.6
12.8
16.0
Wat
er c
onte
nt [M
.-%]
Relative humidity - SW Wall with 1% driving rain
Gutex Rockwool SmartPly Birch plywood
01.10.2017 08.05.2018 13.12.2018 20.07.2019 24.02.2020 02.10.2020Time
34.5
45.4
56.3
67.2
78.1
Rel
ativ
e hu
mid
ity [%
]
80%
56%
Relative Humidity - Flat Roof
PIR Plywood Deck Birch Plywood
01.10.2017 01.10.2018 01.10.2019 02.10.2020 02.10.2021 02.10.2022Time
41.5
49.9
58.3
66.7
75.1
Rel
ativ
e hu
mid
ity [%
]
80%
Relative Humidity - South facing Monopitch Roof
Gutex Rockwool SmartPly Birch Plywood
01.10.2017 08.05.2018 13.12.2018 20.07.2019 24.02.2020 02.10.2020Time
9.5
27.9
46.3
64.7
83.1
Rel
ativ
e hu
mid
ity [%
]
56%
80%
Water Content - South facing Monopitch Roof
Gutex Rockwool SmartPly Birch Plywood
01.10.2017 08.05.2018 13.12.2018 20.07.2019 24.02.2020 02.10.2020Time
0.0
8.6
17.2
25.8
34.4
43.0
Wat
er c
onte
nt [M
.-%]
Envi
ronm
ent
Hea
lth a
nd W
ellb
eing
Econ
omic
Qua
lity
Assu
ranc
e
Sust
aina
ble
Loca
tion
Ove
rall
points scoredtotal points possible
2425
1550 1400925 1070
7370
689512.2 795
425 335
2756.2
0
1000
2000
3000
4000
5000
6000
7000
8000
points scoredtotal points possible
14%
17%
29%
%
16%
EnvironmentHealth and WellbeingEconomicQuality AssuranceSustainable Location
north
KITCHEN
DINING
LIVING
HALL
WCBATHROOM
BEDROOM 214m²
BEDROOM 115m²
STUDIO 2/BEDROOM 420m²
STUDIO 1/BEDROOM 322m²
BB
workbench
storage
Clear roof over
Clear roof over
AA
F
north GROUND FLOOR PLAN
scale 1.100Total Internal Floor Area: 167.2 m2Living Room Area: 43.6m2
ROOF CONSTRUCTIONU-value=0.116 W/m2K
75mm Corrugated metal cladding.75mm Ventilated air cavity -
50mm SW horizontal counter battens and25mm SW vertical battens.
22mm Gutex Multiplex top sheathing board (wind-tight layer) with taped joints.
300mm Z-Joists -100x50mm and 75x50mm SW studs with 300mmOSB web with Rockwool Flexi insulation.
12.5mm Smartply ProPassiv (vapour barrier/airtight layer)with all joints taped with Pro clima Tescon no.1 tape.
50mm service cavitywith 50x50mm SW horizontal battens
12mm Birch plywood treated with fire-retardent Burnblock.
WALL CONSTRUCTIONU-value= 0.114 W/m2K
19mm Larch T+G cladding attached vertically.50x50mm horizontal SW battens.25x50mm SW counter battens.20mm Gutex fibre board
(joints treated with Tescon Primer RPand then taped with Pro clima Tescon no.1 tape.
300mm Z-Joists -100x50mm and 75x50mm SW studs with 300mm OSB web with Rockwool Flexi insulation.
12.5mm SmartPly ProPassiv airtight racking boards(joints taped with Pro clima Tescon no.1 tape)
50x50mm horizontal SW battens to service cavity.18mm Birch plywood treated with fire-retardent Burnblock.
75x50mm SW purlin to take corrugated metal sheeting.
Grommet to SW timber stud.100x50mm SW stud extends to provide 500mm
overhang, continuously taped to Tescon Primer RP treated Gutex.
Outer and inner SW timber studs of Z-joist of Walland Roof bolted together and cut.
Pro clima Tescon no.1 tape to joint between12.5mm SmartPly ProPassiv racking boardin wall and roof.
Pro clima Tescon no.1 tape to joint between12.5mm SmartPly ProPassiv racking boardin wall and roof.
Gutex treated with Tescon Primer RP taped over TesconProfil around window seal.
Window lintel: 18mm OSB boards, 150x50mm SW studsfilled with Rockwool Flexi insulation.
25mm Kingspan Kooltherm K12 (Phenolic insulation) tounderside of window lintel.
Window taped internally to SmartPly ProPassivWindow taped externally to Tescon Primer RP treated
Gutex using Tescon Profil.Larch cladding to underside and side of window ope.Munster Joinery PassiV AluClad window.
ROOF CONSTRUCTIONU-value=0.116 W/m2K
75mm Corrugated metal cladding.75mm Ventilated air cavity -
50mm SW horizontal counter battensand 25mm SW vertical battens.
22mm Gutex Multiplex top sheathing board(wind-tight layer) with taped joints.
300mm Z-Joists -100x50mm and 75x50mm SW studs with 300mm OSB web with Rockwool Flexi insulation.
12.5mm Smartply ProPassiv (vapour barrier/airtight layer)with all joints taped with Pro clima Tescon no.1 tape.
50mm service cavity with 50x50mm SW horizontal battens12mm Birch plywood treated with fire-retardent Burnblock.
ROOF CONSTRUCTIONU-value=0.116 W/m2K
75mm Corrugated metal cladding.75mm Ventilated air cavity -
50mm SW horizontal counter battens and25mm SW vertical battens.
22mm Gutex Multiplex top sheathing board (wind-tight layer) with taped joints.
300mm Z-Joists -100x50mm and 75x50mm SW studs with 300mmOSB web with Rockwool Flexi insulation.
12.5mm Smartply ProPassiv (vapour barrier/airtight layer)with all joints taped with Pro clima Tescon no.1 tape.
50mm service cavitywith 50x50mm SW horizontal battens
12mm Birch plywood treated with fire-retardent Burnblock.
WALL CONSTRUCTIONU-value= 0.114 W/m2K
19mm Larch T+G cladding attached vertically.50x50mm horizontal SW battens.25x50mm SW counter battens.20mm Gutex fibre board
(joints treated with Tescon Primer RPand then taped with Pro clima Tescon no.1 tape.
300mm Z-Joists -100x50mm and 75x50mm SW studs with 300mm OSB web with Rockwool Flexi insulation.
12.5mm SmartPly ProPassiv airtight racking boards(joints taped with Pro clima Tescon no.1 tape)
50x50mm horizontal SW battens to service cavity.18mm Birch plywood treated with fire-retardent Burnblock.
50x50mm SW purlin to take corrugated metal sheeting.
100x50mm SW stud extends to provide 500mmoverhang, continuously taped to Tescon Primer RP treated Gutex.
Grommet to SW timber stud.Outer and inner SW timber studs of Z-joist of Walland Roof bolted together and cut.Pro clima Tescon no.1 tape to joint between
SmartPly ProPassiv in wall and roof.
FLAT ROOF CONSTRUCTIONU-value=0.132 W/m2K
EPDM membrane/ PVC Wolfin M145-290mm tapered Kingspan TR26 + TT46 at a fall of 1:80Isocell Airstop Diva Forte membrane taped to plywood up stand.18mm external grade plywood deck225mm SW joists at 600mm c/c12mm Birch Pywood treated with fire-retardent Burnblock .
WALL CONSTRUCTIONU-value= 0.114 W/m2K
19mm Larch T+G cladding attached vertically.50x50mm horizontal SW battens.25x50mm SW counter battens.20mm Gutex fibre board
(joints treated with Tescon Primer RPand then taped with Pro clima Tescon no.1 tape.
300mm Z-Joists -100x50mm and 75x50mm SW studs with 300mm OSB web with Rockwool Flexi insulation.
12.5mm SmartPly ProPassiv airtight racking boards(joints taped with Pro clima Tescon no.1 tape)
50x50mm horizontal SW battens to service cavity.18mm Birch plywood treated with fire-retardent
Burnblock .
Larch cladding and battens cut with run off profile.Lead flashing over DPC and on top of EPDM membrane.DPC under Gutex MultiTherm
and taped to ext. grade plywood.150mm upstand to EPDM membrane
with SW angle to edge of roof.Beam: 18mm OSB boards, 150x50mm SW studs filled with Rockwool Flexi insulation.Proprietry timber door and frame with paint finish.Airtight vapour permeable membrane to underside of beamand flat roof joists.Pro clima Tescon no.1 tape to joint between
12.5mm SmartPly ProPassiv racking boardin wall and roof.
FLOOR CONSTRUCTIONU-value= 0.119 W/m2K
25mm Solid Oak floor boardswith 10mm expansion gap to perimeter.
3mm Sheepwool acoustic insulation18mm OSBvapour barrier300mm Steico I-beam
with 300mm Rockwool Flexi insulation on18mm fibre cement board
Pro clima Tescon no.1 tape toTescon Primer RT treated Gutex joint.
100x50mm structural grade SW footer.200x20mm Solid oak skirting board.DPCPro clima Tescon no.1 tape to joint between
18mm external grade OSB in floor and12mm SmartPly ProPassiv racking board in wall.
10mm expansion gap for floor boards.300x50mm structural grade SW footer bolted to
steel base and concrete pileto Engineer's specifications.
WALL CONSTRUCTIONU-value= 0.114 W/m2K
19mm Larch T+G cladding attached vertically.50x50mm horizontal SW battens.25x50mm SW counter battens.20mm Gutex fibre board
(joints treated with Tescon Primer RPand then taped with Pro clima Tescon no.1 tape.
300mm Z-Joists at 600mm c/c -100x50mm and 75x50mm SW studswith 300mm OSB webwith Rockwool Flexi insulation.
12.5mm SmartPly ProPassiv airtight racking boards(joints taped with Pro clima Tescon no.1 tape)
50x50mm battens to service cavity.18mm Birch plywood treated with fire-retardent Burnblock.
Poprietry powder coated aluminium cill.50mm Kingspan Kooltherm K12 board
cut to fit under aluminium cill.18mm ext. grade plywood cill support.25mm Kingspan Kooltherm K12 thermal break.DPC running the whole width of the opening
and taped to primed Gutex MultiTherm sheathing.50mm Kingspan Kooltherm K12 board.200x25mm planed timber window cill.Window and SmartPly sealed with membrane and tape.18mm OSB to brace trimming timbers
and provide base for window installation.100x50mm SW trimming timbers to brace Z-joists.Trimming Z-joist at 300mm c/c to larger window opes.
ResultsEnergy rating A3Energy Value (kWh/m2/yr) 64CO2 Emissions Indictor (kg/yr/m2) 5,38CPC 0,145EPC 0,366Part L renewable Contribution (kWh/m2 yr) 48,60
Air tight layer
extract air
fresh (pre warmed)air
Wind tight layer
SYSTEMS + RENEWABLES SPACE HEATING + HOT WATER + ELECTRICITY
PART L HOUSE
DEAP RESULTS+ SPECIFICATIONS
NZEB HOUSE
DESIGN + CONTEXT FABRIC
+ U-VALUES
WUFI PRO HYGROTHERMAL ANALYSIS LIFE CYCLE COST ANALYSIS
HOME PERFORMANCE INDEX
AIRTIGHTNESS + VENTILATION
STRATEGY
NZEB HOUSE TYPICAL WALL, FLOOR AND ROOF BUILD UP
PART L HOUSE TYPICAL WALL, FLOOR AND ROOF BUILD UP
WEST ELEVATION WEST ELEVATIONEAST ELEVATIONNORTH ELEVATIONSOUTH ELEVATION
The site is located County Clare, on the edge of Special Area of Conservation in the heart of The Burren. The land was purchased back in the early 90’s in order to protect it from bulldosing and a fruit farm was planted. The site for the house is nestled between hazel covered Burren limestone and raspberry fi elds and an apple orchard. It over looks a scenic valley steeped in history with Galway bay in the distance. The house design is intended to have as little impact on the site as possible. The use of materials are to be of a natural pallet which will minimise the visual effect of the house. It is the intention that the clients will build it and that the fi nishes inside will be as free of VOCs as possible. The clients are planning to set up two studios with in the house, one for weaving and one for painting. The most important demands were to maximise the potential of the views and of natural daylighting.
SITE LAYOUT
1.50 SECTION WITH AIRTIGHT AND WINDTIGHT LAYER AND VENTILATION STRATEGY
TESCON NO.1 TAPE + TESCON PROFIL TAPE APPLICATION GUIDE FOR SEALING BETWEEN BOARDS, AT JUNCTIONS AND AROUND DOOR AND WINDOW OPES.
PLAN SHOWING MVHR DUCT LAYOUT
XPELAIR XCELL QVI SYSTEM MVHR - C02 MONITORING + SMOKE SENSOR - SUMMER BYPASS - 91% EFFICIENCY
north
ROOF PLAN WITH PV ARRAY AND SOLAR FLAT PLATES
PSITHERM LINEAR THERMAL BRIDGE ANALYSIS + Ψ FACTOR
DT774 - NZEB Project: Residential Dwelling - MAY 2017 Mélina Sharp - D15128874
Video of base case Flat Roof at the end of the fi ve years simulation.
VELUX Daylight Visualizer results.Living Area recieves 45.8% daylight factor 2 or higher.
A methodology for measuring the sustainable qualities of new houses in Ireland, set up bt the Irish Green Building Council. A label for quality sustainable residential development, allowing the general public to compare the sustainability of properties. It is similar to schemes used in the commercial sector such as BREEAM and LEED. It is has fi ve main categories; Environment, Economic, Health and Wellbeing, Quality Assurance and Sustainable Location.
Following the completion of the tool inputs and gathering all the evidence required, the house is ‘certifi ed’ with a HPI index and a total score of 41%.
Chart showing the achieve HPI scores against the total possible scores for the nZEB House.
Chart showing a breakdown of the achieve HPI scores for the nZEB House.
PART LHouse
CompactHouse
PART LHouse
CompactHouse
nZEBHouse
Energy Costs over 30 years.
Break even point (Life Cycle Costs over different timescales) Comparison of Layouts:‘Option B’ Compact Design vs. ‘Options A,C,D,E’ Original Layout
Comparison of Life Cycle Costs and Net Savings.
nZEBHouse
As can be seen from the chart to the right, after 30 years the Part L House becomes less economical than the nZEB House and as energy bills are higher it costs more and more as time goes by. The Compact (nZEB) House becomes more economical than the Part L straight away due to reduce initail costs.
PERIOD OF CALCULATION: Primarily a period of 3 years is used as it is a light weight construction and as the results showed that equilibrium was reached after the rst few months it is an appropriate length of calculation. CLIMATE DATA: The external climate is simulated using Shannon Airport weather data fi le as the house will be built in North Clare.The internal climate data is EN 15026 WTA 6-2 with ‘Medium Moisture Load’ giving an internal RH of between 30-60%.ORIENTATION: South-West is seen as the direction of the prevailing wind in the climate fi le used. This will be subject to the most driving rain. The North facing wall is also tested as this will have the least amount of heat from the sun and therefore less drying out capacity.
MOULD GROWTH ON INTERNAL SURFACES BS 5250:2016, ‘The design of the structure and the heating system should ensure that, over the coldest month, the average relative humidity at internal surfaces does not exceed 80%, the limit for mould growth.’
INTERSTITIAL CONDENSATION BS 5250:2016, ‘Any interstitial condensation which might occur in winter should evaporate during the following summer, preventing an accumulation of moisture year on year.’
DEGRADATION OF MATERIALS BS 5250:2016 states that ‘The risk of degradation of materials should be assessed in terms of the maximum level of condensate which might occur.’
From the graphs it can be demonstrated that there is littlle risk of mould growth, interstital condensation or degradation of materials in the constructions modelled.
WALL BUILD UP MONOPITCH ROOF BUILD UP FLAT ROOF BUILD UP
A series of key linear thermal bridge calculations were made to determine the psi-values of each linear junction. fRSI for each junction was also calculated to demonstrate compliance with Part L 2011 Appendix D, ‘For dwellings, the value of Frsi should be greater than or equal to 0.75, so as to avoid the risk of mould and surface condensation.’
The SEAI Ψ-factor tool was used to record the lengths of each junction and the modelled (and estimated) Psi values were inputted. The result was a Ψ-factor 0.0192 W/m2K. The fRSI values of the modelled junctions are all greater than 0.75 and thus fulfi l the requirement set out in Part L to avoid the risk of surface or interstitial condensation.
Ψ-factor 0.0192 W/m2K fRSI > 0.75
(NZEB HOUSE) ELECTRICITY GENERATION:DIMPLEX 250 W HIGH PERFORMANCE POLYCRYSTALLINE SOLAR PV MODULES. -14.5% EFFICIENCY
NZEB HOUSE SPACE AND HOT WATER HEATING SYSTEMS
(NZEB HOUSE) SPACE + HOT WATER HEATING: KENSA SHOEBOX 6 KW GROUND SOURCE HEAT PUMP.
(PART L HOUSE) SPACE + HOT WATER HEATING: ALESSIA 15 KW PELLET STOCE WITH BACK BOILER TO FEED RADIATORS AND DOMESTIC HOT WATER STORAGE TANK.
64 64 kWh/m²/yr 5.38 kg/yr/m²
XPELAIRXCELL300 QVIMVHR Unit
telioTnehctiK moorhtaBmoornuS
Attic
Extract Air
Fresh Air
Top of internal partition tapedto Smartply ProPassiv.
12.5mm Smartply ProPassiv
Pro clima Tescon no.1 tape tojoint between SmartPlyProPassiv racking boardin wall and roof.
Dining/Livingfresh air inlet(behind)
Fresh airduct toStudios/Bedrooms
Air flow from inletrooms to extractrooms
Bedroomfresh airinlet
Bedroomfresh airinlet
2 moordeB1 moordeB
20mm Gutex fibre board(joints treated with TesconPrimer RP and then taped withPro clima Tescon no.1 tape .
Joint treated with TesconPrimer RP and then taped withPro clima Tescon no.1 tape .
18mm OSB taped at joints andjunctions to internal partitionsand exterior walls.
18mm fibre cement board tapedto I-joists with double sided butylrubber Tescon Naidec.
PVC Wolfin M
Isocell Airstop Diva Fortemembrane taped to plywoodup stand and airtightmembrane wrapping aroundbeam.
Air inlet and outlet vents fittedwith grommets to form a sealwith the Smartply ProPassivboard airtight layer.
Projecting timbers taped andgrommets fitted inside larchcladding.
Extract air
Extract air Extract air
23 kWh/m²/yr5.05 kg/yr/m²
ResultsEnergy rating A1Energy Value (kWh/m2/yr) �3CO2 Emissions Indictor (kg/yr/m2) 5,05CPC 0,136EPC 0,133Part L renewable Contribution (kWh/m2 yr) ��,50
Glass
Aluminium
Aluminium
Copper
Brass
EPDM
Rockwool
KM 559829 BS EN 12975Thermal solar systems and
components
SOLAR HOT WATER: KINGSPAN FW21 FLAT PLATES
Airtightness target is 0.05 Air Changes per Hour or a Q50 value of 1m³/hr/m² measured @ 50pa
Gutex MultiTherm and Gutex MultiTop form for a large part of the windtight layer. As the pitch is 15 degrees only all joints to be taped.SmartPly ProPassiv forms, for a large part, the airtight layer and is to be taped at all junctions, joints and penetrations.Windows/Doors taped to OSB and SmartPly ProPassiv.Service cavity to prevent penetration of airtight layer.All pipework and ducting to be sealed with tapes/ grommets.
An Xpelair Xcell QVI system is specifi ed to provide Mechanical Ventilation with Heat Recovery.
J1 - EAVESPSI = -0.0052 W/MKfRSI = 0.93MIN. SURFACE TEMP.= 18.68°C
J2 - APEXPSI = 0.00418W/MKfRSI = 0.92MIN. SURFACE TEMP.= 18.35°C
J14 - FLAT ROOF TO WALLPSI = -0.07546 W/MKfRSI = 0.96MIN. SURFACE TEMP.= 19.22°C
J6 - WINDOW CILLPSI = -0.00818 W/MKfRSI = 0.96MIN. SURFACE TEMP.= 19.17°C
J4 - FLOOR TO WALLPSI = 0.00549 W/MKfRSI = 0.91MIN. SURFACE TEMP.= 18.29°C
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