The Transition to Energy Efficient Homes in Canada

Transcription

1 The Transition to Energy Efficient Homes in Canada Lessons Learned Stories From Vancouver

2 Vancouver Just One City in Canada

3 Vancouver Canada A Vast Country Many Climate Zones

4 Vancouver Japan Canada World s 2 nd Largest Country Scaled to Japan

5 Part National Building Code - Canada Vs. Lateral Load provisions (earthquake) Transition to NAFS A440.4 Window & Door Installation Standard (or not) 9.36 Energy Provisions About 400 other changes as well..but BC Persevered!

6 Structural: New Seismic Requirements Affecting Several Communities Across Canada

7 9.23 Lateral Loads Coastal Seismic Zone No High Wind Zone in BC

8 Braced Wall Panel The Strength of a Diaphragm

9 The Concept Sheathed walls, roofs and floors transfer loads to the ground (Braced Wall Panels) Sheathed walls loose strength with increased openings Lateral Load Provisions

10 BC Persevered! Illustrated Guide Building Smart & other presentations Building Officials Designers Builders Trades

11 Then Came NAFS Windows, Doors & Skylights

12 NAFS Impact for Manufacturers Builders & Building Officials

13 BC & Canada are Persevering! Labeling Guidelines Quick reference chart Guideline for the Supplement Building Smart & other presentations

14 Then Came 9.36 Energy Efficiency Comfort & Savings

15 Historic Evolution of Energy Provisions

16 1900 s to 2000 s From Nothing, to Newspaper, to Net Zero

17 How Air Tight Do We Build? Airtightness vs. Age of Home 15 Vancouver Ottawa Saskatoon ACH Age of House

18 Airtightness vs. Energuide (Lower Mainland Excluding Vancouver) 16 Base House Base + ASHP Base + R12 under slab Base + Argon, Condensing DHW & R12 Basement Base + Argon Base + Condensing DHW Base + R12 full basement ICF Base Airtightness measured in ACH EnerGuide Rating Typical New House Energy-Efficient New House

19 Airtightness vs. Energuide (Prince George) 16 Base House Base + ASHP Base + R12 under slab Base + Argon Base + Condensing DHW Base + R12 full basement 12 ACH EnerGuide Rating

20 Electricity Net Deforestation Agriculture Waste Transportation Buildings 12% Residential 57% Commercial 43% Other Industry Fossil Fuel Production BC Greenhouse Gas Emissions

21 Consumer Green Demand Demand Energuide / R-2000 Code Greenvenient Built Green / LEED for Homes Increasing Environmental Consumer Incentives Energy Conscience Higher Higher ROI Awareness Costs Alternatives Transportation Costs? Greenvested Greenness Effort

22 BCBC Energy Efficiency (9.37 Secondary Suites) (Water Efficiency Part 10)

23 Climate Zones 6 zones for BC

24 Summary of RSI & U Values Zone 4

25 Summary of RSI & U Values Zone 5, 6 & 7a

26 Goal: Lead the world in green building design & construction 2020 Target: Require carbon neutral operations for all buildings from 2020 onward City of Vancouver Going Even Further!

27 Effective Insulation Values Attic R 40 (other than 1 & 2 family) Attic R 50 Roof Joist R 28 Frame Walls R 20 (other than 1 & 2 family) Frame Walls R 22 Foundation Walls R 22

28 House as a System Energy Efficiency & Performance

29 Conventional Attic Details: Conventional Framing (truss or rafter) RSI 8.8 (R50) Fibrous Insulation (batt, cellulose, blown glass/mineral fiber) Ventilation Baffles Poly Air/Vapour Barrier Interior Finish

30 No Services through Unconditioned Attic Space Flash & Fill Details: Conventional Framing (truss or rafter) Combined RSI 8.8 (R50) R 37 Fibrous Insulation (batt, cellulose, blown glass/mineral fiber) R 15 1/2 pound open cell spray foam insulation (min 3.5 ) Ventilation Baffles Vapour barrier paint

31 Hot Roof - Rafter/Truss/Cathedral Details: Roofing Roof sheathing or skip sheathing on treated furring (3/8 or 2 1/2 ) Roofing felt on sheathing Rafter/Truss Framing RSI 4.9 (R28) Min. 1/2 pound open cell spray foam insulation Vapour barrier paint Vault or conventional ceiling

32 Hot Roof - Rafter/Truss Details: Roofing Roof sheathing or skip sheathing on treated furring (3/8 or 2 1/2 ) Roofing felt on sheathing Rafter/Truss Framing RSI 8.8 (R50), 1/2 pound open cell spray foam insulation Vapour barrier paint Vault or conventional ceiling

33 Unvented Rafter Details: Roofing Roof sheathing or skip sheathing on treated furring Roofing felt on sheathing Rafter Framing RSI 8.8 (R50), 2 pound closed cell spray foam insulation Vault or conventional ceiling

34 Miner Fibre Continuous with Infill Details: Exterior Cladding 3/8 Furring Min 1 1/2 Rigid Mineral FIbre Sheathing membrane Sheathing 2 x 24 o.c. Infill fibrous insulation Interior finish with vapour retarder/barrier

35

36 Double 2x4 Frame (9.5 ) with Infill Details: Exterior Cladding 3/8 Furring Sheathing membrane Sheathing Double 2 x 4 ( o.c. Infill fibrous insulation Interior finish with vapour retarder/barrier

37 Double 2x4 Frame (9.5 ) flash & fill Details: Exterior Cladding 3/8 Furring Sheathing membrane Sheathing Double 2 x 4 ( o.c /2 PCF open cell spray foam insulation Infill fibrous insulation Interior finish with vapour retarder/barrier

38 Continuous rigid foam with Infill Details: Exterior Cladding 3/8 Furring MInimum 2 1/2 XPS Rigid Foam Insulation (3 EPS) Sheathing membrane Sheathing 2 x 16 o.c. Infill fibrous insulation Interior finish

39 ICF with drained, vented EIFS finish Details: 1 minimum Exterior Insulated Finish System (EIFS) Pressure equalized drainage channels ICF wall structure Interior finish

40 ICF with drained, vented cladding Details: Cladding 3/8 Treated Plywood Furring ICF wall structure Interior finish

41 2-1/2 Rigid foam, 2 x 4 wall/ infill Details: Exterior fill Damp- or water-proofing Unreinforced concrete foundation wall 1-1/2 XPS tight to concrete 2 x 4 frame wall, offset from concrete R12 infill insulation Full Sub-slab 2-1/2 XPS (3 EPS) Interior finish (not shown)

42 2 PCF Spray foam (closed cell) Details: Exterior fill Damp- or water-proofing Unreinforced concrete foundation wall 2 x 4 frame wall, offset from concrete 4 2 PCF closed cell spray foam insulation Interior finish

43 4 Rigid foam insulation Details: Exterior fill Damp- or water-proofing 4 Rigid Foam insulation Unreinforced concrete foundation wall Unfinished/finished basement

44 ICF Basement Details: Exterior fill Damp- or water-proofing ICF foundation wall Finished basement

45 Rim Joist & Interior Electrical 1.0 Sealed Poly It s All in the Detailing

46 But BC Persevered Again!! Illustrated Guides Building Smart & other presentations Building Officials Designers Builders Trades

47 Testimonials Hi Murray Just to let you know and share my appreciation for your input into the project. My home which was the first home to incorporate the research we did with you has just recently been awarded the first ENERGY STAR qualified home in BC with an Energuide rating of 84. Thanks for all your help. Warm regards, Lars Chose President, Mandala Homes

48 Part National Building Code - Canada We win!

49 The Transition to Energy Efficient Homes in Canada Lessons Learned Stories From Vancouver