What is an air barrier / Guides

Air barriers are essential to a properly functioning wall system
Air and vapour barriers

What is an air barrier?

...is carried into our walls by air leakage than is carried by vapor diffusion. That makes air barriers 100 times more important than vapour barriers, so why is no...

The difference between air barriers and vapour barriers
Air and vapour barriers

The Difference between air barriers and vapour barriers

...air pressure. A wall system should have one vapor barrier, but can have many air barriers. A vapor barrier can act as a very effective air barrier, but an air b...

Vapor retarder latex primer instead of polyethylene sheet
Air and vapour barriers

Replacing polyethylene vapour barriers with latex paint vapor control

...barrier is to control vapour diffusion, the job of the air barrier is to control air leakage. 6 mil poly can work effectively as an air barrier if it is caref...

Interior sheathing as air & vapor barriers in wood frame construction
Air and vapour barriers

Interior sheathing as an air and vapour or vapor barrier

...an additionally act as both an air barrier and vapour barrier. Taped OSB sheathing as air barrier © Durfeld Constructors There is no question that this ...

Air and vapour barriers

Aerobarrier home and attic air-sealing spray

...an exterior air barrier, or you can wait until the drywall is completely installed and mudded. Another advantage of this product is realized with multi-unit b...

Off grid, passively heated and cooled house in the Gatineau Hills, Que
Off-grid and Net-Zero Housing

Off grid and passively heated, this house in Low, Quebec is aiming for LEED certification

...is design began with the basic principles of passive heating and cooling - invest in really good windows, face as many of them south as you can to gain heat, an...

Blower Door Tests - What's the Cost & Who Does Them?
Air and vapour barriers

What is a blower door test? What's the cost? How do you find a company to do one?

...is powerful exhaust fan draws air in from any existing hole in your air barrier no matter how small it is. The operator then determines your ACH (air changes ...

Choosing a building envelope
Wall assemblies - new construction

Choosing a building envelope - starting with the perfect wall

...is an environmental separator between outside and inside . Its intent is to slow the movement of heat and air between outside and in, and manage moisture infilt...

Condensation on windows leads to mold & mildew in homes, ERV & HRV systems help
Ventilation

Ventilation & air exchangers

...an older home, don’t panic. What we write in these pages is meant to inspire ideas and solutions, not fear and anxiety. If you feel good, your air smells good a...

Tyvek home wrap left exposed to wind and UV rays
Air and vapour barriers

Weather barriers - what they do and how to install them

...and-stick' membranes, and if you'd like a fancier word for them, go with this - self-adhering air and water-resistive barriers. Peel-and-stick vapour-permea...

Passive House wall system ; Larsen Trusses & dense-packed cellulose insulation
Wall assemblies - new construction

Larsen truss wall systems with double-stud construction & extra insulation for new homes & energy efficient home renovation

...is used as the air barrier and vapor barrier , by using a high-performance building tape to seal the joints and the Larsen Trusses are effectively a cost-effect...

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