Difference between 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

...difference between 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 ai...

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Exterior air barrier membrane © Ecohome
Air and vapour barriers

How to install an air barrier for reduced air leakage

...difference between 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 ai...

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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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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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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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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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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!"

...differences in warm months are really only a cost and durability concern if you use air conditioning. Negative air pressure in summer will draw air in and ...

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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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Choosing house sheathing
Wood and organic materials

Which is better, OSB or plywood sheathing?

...vapour permeability and low water retention, such as mineral fibre." Where to put vapour barriers (CMHC): "Materials that act as vapour barriers (vapo...

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Spray polyurethane foam on basement walls prevents mold and midlew
Healthy indoor air quality

Basement renovations: how to prevent mould when retrofitting basements

...and a vapour barrier. Notice the difference between the studs against the foundation and the studs that formed an interior division wall; the vapour barrier did...

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