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Air sealing
ELA
Key efficiency factor
ELA rates total leakage in a home’s air barrier including ceilings, walls and floors.
Air barriers with lower ELA are more energy efficient… more
ELA rates total leakage in a home’s air barrier including ceilings, walls and floors.
Air barriers with lower ELA are more energy efficient.

ELA combines all holes responsible for uncontrolled air flow through a home’s air barrier.
ELA is short for equivalent leakage area at 10 pascal indoor/outdoor pressure difference. less
Typical range of NEW sealed air barriers:
90 sq. in. ELA
Air barrier
60 sq. in. ELA
Air barrier
30 sq. in. ELA
Air barrier
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Discover ideas, technology, rebates & more
Three strategies to improve indoor air quality
See advice at epa.gov
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EPA US Government
Attic air sealing guide
See advice at homeskor.com
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air sealing
Building Science Corporation Guide 47 pages
Successfully serving the building community for over 35 years
See contractor at fourseasonsinsulation.com
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air sealing
Four Seasons Insulation (604) 607-5022
AccuTrex gasket for harsh outdoor environments
See accessory at accutrex.com
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air sealing
AccuTrex EPDM Rubber
Air sealing including filling large holes with expanding urethane foam
Sealed air barrier
50 sq. in. ELA
See product at certainteed.com
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air sealing
Air Barrier Stop uncontrolled air flow
Air leakage testing and thermal imaging
See service at citygreen.ca
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air sealing
City Green Solutions 1-866 381-9995
Tested for Life in Canada
See retailer at canadiantire.ca
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air sealing
Canadian Tire (604) 431-3570
Dupont, the miracles of science
See manufacturer at dupont.ca
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air sealing
Dupont Air Sealent
Coast Capital - Financing home renovations
See financing at coastcapitalsavings.com
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air sealing
Coast Capital Home Equity Line of Credit
Air sealing including weatherstripping all windows, doors, and hatches
Sealed air barrier
160 sq. in. ELA
See product at certainteed.com
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air sealing
Air Barrier Stop uncontrolled air flow
Restore your home with Insul-Twin’s insulation, siding, and window & door replacement services
See contractor at insul-twin.com
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air sealing
Insul-Twin Systems (604) 942-4948
Before you start an energy-efficient retrofit
See advice at homeskor.com
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air sealing
CMHC Guide 8 pages
Henry, the #1 choice of professionals
See manufacturer at ca.henry.com
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air sealing
Henry Air Sealent
Home Owners helping Homeowners
See retailer at homehardware.ca
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air sealing
Home Hardware 1-877 940-5081
Battic Door non-mechanical one way valve In-line daft blockers
See accessory at batticdoor.com
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air sealing
Battic Door Premium Series
Fresh air begins with fresh thinking
See service at bcfurnace.com
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air sealing
BC Furnace (604) 415-9471
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Renovation guide
All upgrade options Insulation Windows
Heating Air sealing Doors
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