Air-Sealing Beyond the Attic

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1 Air-Sealing Beyond the Attic Energy Design Conference Bob Pfeiffer February 26, 27, 2013 Experience. Innovation. Results.

2 About WECC Proving the value of energy efficiency and renewable energy since 1980 National leader in administering, implementing, and designing energy programs Anticipate and understand trends that affect the marketplace Exceed client goals and maximize program budgets Experience. Innovation. Results.

3 Agenda Building Science: nature of air-leaks Garages: Attached and Tuck-under Basements, Crawl-spaces: interior Foundations: Interior and Exterior Windows, Doors Walls: Interior and Exterior Interstitial spaces Chimneys Experience. Innovation. Results.

4 Objectives List reasons why air-sealing efforts can expand to entire shell Identify missed opportunities Conduct inspections to locate and quantify air-leakage sites List proper material applications Measure effect of air-sealing efforts Experience. Innovation. Results.

5 WARM AIR OUT COLD AIR IN Experience. Innovation. Results.

6 Air in = Air out Primary air leaks (4 types) Secondary or symptomatic leaks Connected pathways Compartmentalizing helps a bit- slows convective loop heat loss May not be affected by pressure differential testing- (floor line cavities) Experience. Innovation. Results.

7 Air Leakage Not Seen Experience. Innovation. Results.

8 Neutral Pressure Plane Does it mean we don t seal certain places? Is it stable? Locate it! Like everything else in this business- It s Complicated!! Experience. Innovation. Results.

9 Four Types of Air-Leaks Experience. Innovation. Results.

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14 Infiltration Heat Recovery Experience. Innovation. Results.

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16 What s At Stake?

17 Air Leaks can cause Depressurization in the home, drawing in carbon monoxide Experience. Innovation. Results.

18 FLAME ROLL- OUT

19 Moisture Movement by Diffusion & Air Transport Moisture moves high to low Experience. Innovation. Results.

20 DIFFUSION DIFFUSION 4x8 sheet of gypsum board Interior at 70º F and 40% RH Diffusion Test Period Was One Cold Climate Heating Season DIFFUSION DIFFUSION 1/3 quart of water DIFFUSION Lstiburek, J Builder s Guide to Cold Climates. Building Science Corporation Experience. Innovation. Results.

21 4x8 sheet of gypsum board with 1 in 2 hole Interior at 70º F And 40% RH Air Transported Moisture test period: One Cold Climate Heating Season 30 quarts of water Air Leakage Lstiburek, J Builder s Guide to Cold Climates. Building Science Corporation Experience. Innovation. Results.

22 What s In, What s Out? Define the heat envelope before starting Understand what is important Find the opportunities Put someone in charge once agreement is reached Experience. Innovation. Results.

23 WHAT S IN: WHAT S OUT? Experience. Innovation. Results. ENERGY.GOV

24 Low-Cost Air-Sealingg

25 Joe Nagan

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28 Garages Greatest source of: Carbon Monoxide VOC s Moisture Second most important leak sites to seal according to BPI Experience. Innovation. Results.

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30 In or out?

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46 Doors

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55 Verification of Sealing Visual Blower door and smoke Blower door CFM50 Blower door and Thermography Zone pressure diagnostics Open_Door_House_to_Garage.pdf Pressure pan ducts- duct blaster Experience. Innovation. Results.

56 Basements, Sills, Crawlspaces To seal or not to seal? Costs (2-part foam) Reduced air supply for natural draft appliances Absence of natural draft appliances Insulated foundation High-performance housing Radon considerations Third priority for air-sealing: BPI Experience. Innovation. Results.

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58 Was the installer a lefy or righty?

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70 Foundations - Exterior

71 videos air leaks \DSCN1935.MOV Experience. Innovation. Results.

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82 Exterior Walls Bob Pfeiffer Experience. Innovation. Results.

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95 Interior Walls

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102 Windows

103 Is This Cost-Effective? Home Energy Article- Depends! Quick treatment Experience. Innovation. Results.

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105 Treatments Pulley Seals Sash lock V-Seal Caulk/glaze window lites Interior clear caulk Window film temporary but very effective Experience. Innovation. Results.

106 Doors

107 Installation Tips Bulb style least effective Remove all extra junk Caulk or seal behind weather stripping Watch clearance to knob Silicone flap works well- low profile Might need compression style Notch corners Caulk or foam behind jambs when needed Experience. Innovation. Results.

108 Interstitial Spaces

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110 Myoldhouse.com Jpcraighomebuilders.com Experience. Innovation. Results.

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113 - 25 Experience. Innovation. Results.

114 0 Pascals Air leaks are concentrated in ONE locaron - 25 pascals AIR LEAKAGE OCCURS AT THE OPEN JOIST AREA - 50 pascals Experience. Innovation. Results.

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116 - 50 Pascals Dense- Pack Cellulose Air- Seal While InsulaRng PORCH ROOF AIR NO LONGER LEAKS AT THE OPEN JOIST AREA 25 pascals 0 Pascals WOOD FRAMED WALL WITH CAVITY INSULATION FLOOR JOISTS EXTEND PAST WALL TO FORM PORCH CEILING 0 pascals Experience. Innovation. Results.

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120 Dropped Ceilings

121 Dropped Ceilings

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127 Partition Walls

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133 What is the highest point in the pressure boundary? Tuck- under garage basement Experience. Innovation. Results.

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135 Missing Pie Plates

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137 Treatments Cap top of Chimney Roofer takes chimney below roof line Bring chimney to attic floor-line Punch out a brick at floor-line and seal Post notice at base! Experience. Innovation. Results.

138 Questions? For more information, please contact: Bob Pfeiffer Experience. Innovation. Results.

139 Needed will be added to final document Kitchen cabinet/dropped ceilings 5 methods to verify garage sealing Videos of air-leaks- More garage pics Experience. Innovation. Results.

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