Air barrier / Guides

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

Interior sheathing as an air and vapour or vapor barrier

...air barrier and vapour barrier. Taped OSB sheathing as air barrier © Durfeld Constructors There is no question that this technique also presents a new c...

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

...airtight, they don't dry as easily, and common building practices trap moisture inside wall assemblies. Be careful not to confuse Air barriers with Vapor barrie...

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

What is an air barrier?

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

Exterior air barrier membrane © Ecohome
Air and vapour barriers

How to install an air barrier for reduced air leakage

...barrier, but can have many air barriers. A vapour barrier can act as a very effective air barrier, but an air barrier does not (and should not) always stop vapo...

Air and vapour barriers

Aerobarrier home and attic air-sealing spray

...Air Barriers or Air sealing a home during construction or renovation , see here. Choosing air barrier membranes, all about Passive House construction and High p...

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

The Difference between air barriers and vapor 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

...air barrier. The purpose of the two barriers should not be confused - the job of the vapour barrier is to control vapour diffusion, the job of the air barrier i...

Passive Solar Index Home - super high efficiency
Passive solar home design

Passive Solar Index Home Case Study

...barrier 16 inch thick dense-packed cellulose wall insulation with double-stud Larsen truss walls Exterior wood fiber board Air barrier Pre-painted steel...

Frost in attic
Roof assemblies - renovation

Why is there frost in my attic?

...air leaks and add insulation. In the unfortunate situation of having no air barrier but a truss system that makes a poly air barrier impossible to install from ...

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

...air barrier and vapor barrier , by using a high-performance building tape to seal the joints and the Larsen Trusses are effectively a cost-effective and lightwe...

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

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

...air sealing. Manufacturers will rightly claim their products are a suitable choice for an air barrier, and they most certainly are. The failure of weather barri...