Alternative techniques. From the Saskatchewan Conservation House to the Toller House with some R2000 thrown in along the way

Transcription

1 Alternative techniques From the Saskatchewan Conservation House to the Toller House with some R2000 thrown in along the way

2 Insanity. Continuing to do things the same, and expecting a different outcome

3 Insanity.. Building California style housing on a subarctic plain. like Saskatchewan

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5 The Saskatchewan Conservation House was built in 1977 was one of the first energy conservation demo houses in North America. Over 30,000 people toured the two-storey structure; cubicle in shape, airtight, and equipped with a heat recycling system. It had no furnace; instead, the house was heated with a solar heating system designed specifically for Saskatchewan s extreme climate.

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10 Innovative Features of the Saskatchewan Conservation House 1. High Insulation levels: Attic R60 cellulose insulation Walls R 44 3 layers of glass fiber batts Floor R 30 in joist cavity using cellulose insulation 2. First plastic surface air to air heat exchanger in Canada 3. Insulating shutters on most of the windows 4. Gray water heat exchanger 5. Vacuum tube solar collectors with a 2900 US gallon insulated storage tank to store heat 6. Very well sealed building. roof, walls and floor (0.8 air changes per hour at 50 pascals)

11 Canadian Building Digest UDC March 1976 (excerpt) Vapour Barriers: What are They? Are They Effective? J.K. Latta It has been implied that diffusion is the prime cause of condensation problems. It is probably more accurate to say that vapour diffusion by itself never initiates a problem. Air leakage is now considered to be the prime cause of most condensation problems in walls and roof spaces. If, therefore, a building can be made tight against air leakage it may not need a vapour barrier, as we know it. On the other hand, if there are openings that permit air to leak from the warm side to the cold side of the insulation, adding a vapour barrier (even of zero permeance) that does not seal off the openings will be useless.

12 Overall Lessons from the Conservation House Simple is better than complicated Passive is better than active - Moving parts fail Focus on envelope / conservation

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14 House as a system Heat, air and moisture flows

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17 TOLLER-TENER Residence Ottawa, Canada R-60 Cellulose Ceiling R-50 Fibre /Cellulose Walls Triple Glazed Windows on North, East and West Double Glazed on South Pressure Treated Wood Foundation Rock Storage Air Infiltration 0.5 First Known Use of DuPont Tyvek in Residential Housing Condensing Gas Boiler with Solar DHW & Space-Heating Whole-House Ventilation; AirChanger HRV

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30 Everything you need to know but were..

31 If what you re doing is not working. Stop doing it.

32 Eagle Nest Saugeen First Nation Sustainable Housing

33 ICF Foundations

34 Stud Factory Super Stud Factory: Starts working on studs at the training centre, Jan Utilizing First Nation Resources: Training Centre and Community Employment

35 Expanded Wall Cavity R-45 +Wall Provides thermal break, increased levels of insulation, allows installation of services without creating air voids in insulation

36 Exterior Insulation Additional layer of exterior insulation Provides an additional R value - 6 (RSI) 1.05 Foil-Faced Polyisocyanurate Foam Sheathing

37 Insulation and Vapour barrier

38 Foam guns, Acoustical Caulking and sheathing tape Air Tightening

39 Triple Glazed Low E Argon Windows Awning and Casement windows provide higher sealing qualities Energy Star Rated Windows

40 First Nation Community Employment Created employment for Saugeen First Nation Members, Sub trades and students Created 25 jobs under Saugeen s Work force. Plus various Sub trades hired community members.

41 Power pipe - Drain Recovery A 60-inch Power-Pipe System, for example, can raise the cold water temperature from 10 C (50 F) to as much as 24 C (75 F), under equal flow conditions.

42 Final Product

43 According to Straube in Halifax, Jan R 60 ceilings R 40 walls R 20 basement walls R 10 under slabs R 5 windows

44 Tex s top ten 1. Make houses last longer 2. That means managing moisture at a whole different level roofs, walls, foundations 3. Better insulation, no thermal bridges 4. Commit to air tightness, start testing 5. Commit to ventilation, make it work 6. Build on the ground or ICF basements 7. Live the whole house 8. Take back the roof space 9. Build with the future in mind, the sun, renewables 10. People need to love their house

45 Think High and Dry 45

46 Controlling Capillary Moisture Capillary break between soil & basement wall Free-draining fill & vapour barrier under floor slab Dampproofing Capillary break at footingwall connection Footing Barrier Gravel & Vapour Barrier Consella Dorken

47 A surprising amount of heat can escape through basement walls Consider rigid foam board to separate wood framing and fiber insulation from damp concrete Consider leaving out the poly on the inside wall, to allow the wall to dry in 47 Green building adviser.com

48 ICF Construction Frost Protection 48

49 Frost Protection

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52 Frost Protection 52

53 Frost Protection 53

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55 WINDOW SILL JAMB Framing Wall Sheathing Beveled Wood Sub-Sill Sheathing Paper Sill Membrane Corner Membrane Jamb Membrane Sheathing Paper Shims Window Sheathing Paper Wood Strapping Metal Drip Edge Trim Board Wood Siding Backer Rod & Exterior Sealant Backer Rod & Interior Sealant Insulation Polyethylene Wood Stool Interior Gypsum Board Maximum Exposure Conditions: Window Assembly: Medium Wall Assembly: Medium Interface Detail: Medium VAPOUR BARRIER AIR BARRIER EXT. MOISTURE BARRIER WATER SHEDDING SURFACE Use Page Up and Page Down Keys to Scroll Through Sequence

56 What s your act of Green? Mike Holmes plans to eliminate thermal bridging 56

57 MOISTURE FLOWS WITH AIR LEAKAGE Seal air leaks to stop moist air from getting into cold cavities CANADA MORTGAGE AND HOUSING CORPORATION

58 ERS is an energy rating system for new houses Uses HOT 2000 energy modeling software and blower door testing The average new home has a rating of An R-2000 home is benchmarked as EG 80 or better, new R-2000 is ERS 86 Houses that produce as much energy as they consume are ERS 100, CMHC calls them EQ

59 The Case for Building Up 59

60 Basement entry housing Frost Protection 60

61 Frost Protection 61

62 Are you ready?

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64 INVEST MORE Spend 10% more Built houses that last twice as long Cost half as much to heat Energy savings pays for the upgrades Make people love them - what you love, you look after

65 Thank You We will change for the better or be changed for the worse. Wendell Berry 65 Heating Systems