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Exterior air barrier membrane © Ecohome
Air and vapour barriers

How to install an air barrier for reduced air leakage

...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 diffe...

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

Vapour / radon barriers below slab floors

...vapour barrier, we used a 10 mil barrier and a radon evacuation stack to lower radon gas levels in homes, research shows (see below) that thicker membranes offe...

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

The Difference between air barriers and vapour barriers

...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 diffe...

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

What is an air barrier?

...vapour barriers, so why is no one talking about them? We don't talk about air barriers because we are too busy talking about vapour barriers. An air barrie...

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Interior sheathing wood frame construction
Air and vapour barriers

Interior sheathing as an air and vapour barrier

...vapour barrier. Ideally we'd have no vapour barrier in summer; but short of that we should at least have one that allows as much drying to the interior as ...

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Bergeron- McClure

...Vapour barrier 16 inch thick dense-packed cellulose wall insulation Exterior wood fiber board Air barrier Pre-painted steel cladding Roo...

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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

...vapour barrier on the inside of an air conditioned house is colossally stupid. - J.L. Moisture-impenetrable vapour barriers work great in winter and, be...

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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

...vapour barrier. Products rated below those numbers are vapour barriers, those rated between 1 and 10 perms are considered vapour retarders. The higher the perm ...

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Insulating crawlspaces
Crawl spaces

How to insulate crawlspaces

...vapour barrier at 1 inch, and testing shows that EPS foam acts as a vapour barrier (1 perm) at 2 inches or thicker. Rock wool on basement walls © Ecohom...

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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

...vapour barrier. Notice the difference between the studs against the foundation and the studs that formed an interior division wall; the vapour barrier did not p...

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