Alternative vapour barriers / Guides

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

The Difference between air barriers and vapor barriers

...barriers and vapor barriers is to prevent moisture from forming at that critical point, they just do it in completely different ways. Vapor barriers The rul...

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

Choosing the right house wrap / weather barrier, which is best?

...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 ...

Better Basement Design on basement walls prevents mold and midlew
Healthy indoor air quality

Basement renovations: How to prevent mold when finishing basements

...vapour barriers in below grade wall assemblies are commonplace, frustrated building scientists insist that installing them is the worst thing you could possibly...

Choosing a building envelope
Wall assemblies - new construction

Choosing a building envelope - starting with the perfect wall

...vapour control layer, or vapor barrier : Although commonly known as a 'vapour barrier' a better term to use would be a vapour retarder. A moisture control bar...

Insulating crawlspaces as part of home renovation
Crawl spaces

How to insulate crawlspaces properly as part of renovating an older home

...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 insulation batts on basement w...

Step by step guide for slab-on-grade home construction
Slab on Grade

Slab-on-grade construction: the ecoHOME A to Z Slab building guide

...VAPOUR BARRIERS FOR SLAB ON GRADE: Install anchor bolts and lateral insulating panels and then the center panels. Next, cut around the plumbing system and m...

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

Why are basements moldy? How to fix or Prevent a Moldy Basement

...barriers on basement insulation will rot your walls " We put vapour barriers in basement wall assemblies to keep moisture from getting into them, as if they d...

Installing foam panel insulation, which is best?
Insulation and soundproofing

Rigid insulation panels: which ones to use for different applications

...vapour barrier has a permeability rating of 3.4 ng, making it about 18 times more vapour resistant than building codes allow. The permeability of EPS can be h...

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

Why you should Never Install Air-Con in a Home with a Vapor Barrier

...barriers with Vapor barriers either, they're not the same... Adding to that problem is that we have introduced engineered wood products that are far more suscep...

Crawlspace radon barrier installation for radon mitigation
Radon in Homes - Mitigation

Removing radon gas from basements and crawlspaces

...barriers and vents but the question remains of how to deal with high levels of radon in existing homes with no mitigation system in place. Below we outline rado...