Air barriers and vapour barriers / Guides

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

The Difference between air barriers and vapour barriers

...air barriers and vapour barriers The job of a vapour barrier is to prevent vapour diffusion, and the job of an air barrier is to stop air leakage through d...

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Exterior air barrier membrane © Ecohome
Air and vapour barriers

How to install an air barrier for reduced air leakage

...air barriers and vapour barriers: The job of a vapour barrier is to prevent vapour diffusion and the job of an air barrier is to stop air leakage through d...

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Poly vapour barriers in air conditioned houses can cause mold and rot
Healthy indoor air quality

Polyethylene vapour barriers in air conditioned homes can rot walls

...air conditioned house is colossally stupid. - J.L. Moisture-impenetrable vapour barriers work great in winter and, before air conditioning and heavily i...

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Vapor retarder primer
Air and vapour barriers

Replacing polyethylene vapour barriers with paint

...vapour barriers where vapour retarders will work, avoid vapour retarders where vapour permeable materials will work. Avoid the installation of a vapour barr...

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

What is an air barrier?

...vapour is carried into our walls by air leakage than is carried by vapour diffusion. That makes air barriers 100 times more important than vapour barriers, so w...

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Radon and vapour barrier below slab on grade floor
Healthy indoor air quality

Vapour / radon barriers below slab floors

...barriers below slab floors serve two purposes - to prevent moisture from wicking into concrete and disbursing it into homes, also to create a radon barrier. Rad...

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Interior sheathing wood frame construction
Air and vapour barriers

Interior sheathing as an air and vapour barrier

...air and vapour permeance. By moving the sheathing to the inside, you are simply letting it live up to its full potential as an air barrier and vapour barrier, a...

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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-pe...

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Problem areas of air leakage in a home and blower door test being cond
Air and vapour barriers

Balancing air pressure in a house: "Your house sucks." "Oh yeah? your house blows!"

...and durability concern if you use air conditioning. Negative air pressure in summer will draw air in and increase either your cooling costs or your discomf...

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Condensation on windows leads to mold and mildew in homes
Ventilation

Ventilation & air exchangers

...airtight. Before that we generally relied on leaky uninsulated walls to provide fresh air and prevent mold and mildew, and they did that very well. Cost an...

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Finished basements can lead to mold and mildew
Healthy indoor air quality

Why are basements mouldy?

...and when left unchecked will continue to wick moisture from the ground and distribute it into your home for as long as your home stands. Why are basements ...

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