Weather barrier / Guides

...weather barriers and rainscreens play in a wall, choosing the right products and installation tips for optimum performance. They're officially known as water-resistive barriers or WRBs, sometimes weather-resistive barriers, but in practical terms they are more commonly called housewraps and weather barriers. With so ...

...barriers and vapor barriers The job of a vapor barrier is to prevent vapor diffusion, and the job of an air barrier is to stop air leakage through differences in 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 a...

...barrier and vapour barrier, and eliminating the need to install a separate product to do that job. One of the benefits of OSB as an air barrier is that it is solid. A polyethylene or foil air barrier can be easily pierced by the slightest touch with a sharp tool, without even realizing it. In contrast, it is unlikely...

...barrier and air barrier 11 7/8" TGIs (I-joists) as a double-stud wall attached to the exterior of the sheathing (R42) 1.5" ECO4 Wood fiber-board rigid exterior insulation (R4) Weather barrier (WRB) Strapping Exterior cladding * Both homes are built on a raft-slab ‘ slab on grade ICF Forming kit ’ with 12 ...

...weather events of their specific climates as well. How are climate zones divided in USA & Canada? Using information gathered from 4,775 US weather sites, in the early 2000s, the U.S. Department of Energy’s Pacific Northwest National Laboratory created a simplified map separating North America into 8 general climate...

...barriers in the form of 6 mil poly vapor barriers , exterior weather resistant barriers (WRBs) , tapes and caulking etc, so the cost doesn’t really go up much. All you need to do to improve the air seal is take your time and be a bit more careful, and what’s the point of taping the joints of a membrane if you don’t do ...

...barrier was installed on the inner surface of the inner wall. This meant that all electrical boxes had to be sealed to the air / vapour barrier and the barrier had to be carefully sealed where interior partitions and the second floor joists passed through it. In 1977, there were no contractors with experience or trai...

...barriers (CMHC): "Materials that act as vapour barriers (vapour retarders), including certain types of insulation, must be located within the assembly so that moisture moving from the inside to the outside does not condense and accumulate within the assembly. This means that vapour barriers should be located on the w...

...barrier. Here is the fun part - Since there is foil on either side of the panel, you end up with a harmless second vapour barrier, which is usually heresy in building design. But this can help in summer months when there is a risk of the vapour drive reversing due to air conditioning during hot humid weather. Any inw...

...barrier needs to be installed to seal off the ground from the air in the crawlspace . A DIY radon mitigation solution for a crawlspace is to use a standard 6 mil polyethylene vapour barrier, which works, but contractors may be required by law to use a fire-rated membrane. The membrane itself is not impermeable to radon...

...weather during construction, and the quick installation of finished panels means you can get a roof over them quickly. When I spoke with Chris Magwood about the public perception regarding moisture issues, he had this to say: " We think nothing about putting trees in our walls; straw is the same organic material. It'...