Exterior air barrier membrane / Discussions

How do I create a complete air barrier using a vapour retarding primer?

...exterior air barrier (in which case the vapor retarder primer is an option since you've dealt with air leakage), or an interior air/ vapor barrier like the stan...

Posted by Mihai Wilson May 3, 2018, 10:15 p.m. Wall assemblies - renovation 1 Responses

How do you attach exterior siding without affecting the air barrier on a passive house?

...air barrier for exterior insulation and the siding. Are you saying that it is not necessary to use the pieces Flexxband where penetrations go into the air barri...

Posted by Scott Bowker July 16, 2018, 11:07 p.m. Wall assemblies - new construction 3 Responses

Is the ZIP sheathing system good or bad for water control?

...exterior insulation with a combined air/vapour barrier on the exterior sheathing and therefor have never needed to worry about poly vs. vapour barrier paint. In...

Posted by Trevor Prinz Nov. 26, 2019, 4:03 p.m. Walls and Roofs 4 Responses

What is the best way to frame window openings when adding exterior insulation?

...exterior of a 2x6 wall, so we installed a plywood extension to allow the window to sit solidly, partly over the exterior board insulation. Our exterior air barr...

Posted by Anwas Qwelten May 30, 2019, 8:16 p.m. Windows and doors 1 Responses

Does using T & G wood plank instead of drywall affect where we put the vapor & air barrier?

...barriers) as air barriers , because you could go with an exterior air barrier ( see our exterior peel and stick membrane installation video ), or you can use th...

Posted by Sue Colbourne Nov. 9, 2019, 6:16 p.m. Walls and ceilings - interior surfaces 3 Responses

What is the best way to insulate a home from the outside?

...membrane over top as an air barrier. If you do add new plywood sheathing, you could just tape the joints and it will act as your air barrier Read all about ho...

Posted by Sylvie Gagnon Dec. 12, 2017, 11:58 a.m. Wall assemblies - renovation 1 Responses

What is the best way to insulate a 1780 brick federal with stone foundation in New York?

...exterior of an existing foundation comes at a much higher cost simply due to the need to excavate, but it does however afford you the opportunity to do a membra...

Posted by carole roseman Jan. 5, 2020, 2:39 p.m. Foundation and basement improvements 1 Responses

What type of Insulation can I use on the exterior of my home?

...air barrier only, or all in one - insulation, air barrier and vapor barrier. this is a good and bad thing - we think it's great that they are offered, but I wis...

Posted by Scott Muller April 18, 2019, 2:19 p.m. Wall assemblies - renovation 6 Responses

How should I insulate basement Walls in climate zone 5?

...exterior of the basement walls has 2” of foam on them so any warmer air from finished basement would permiate through mineral wool to the wall but air space wou...

Posted by Chad Johnson March 25, 2019, 8:33 p.m. Basements improvements 1 Responses

Can you Insulate a Cinder block basement foundation with Rockwool?

...airtightness. Our first suggested assembly for interior basement insulation would be a vapor barrier membrane directly against the concrete block foundation, ...

Posted by Victor B June 19, 2019, 11:41 p.m. Basements improvements 5 Responses

Can you install foam boards directly against basement walls?

...membrane and not just the bitumous spray. Since you likely don't have such a membrane on the exterior, the blocks will always have a certain amount of moisture ...

Posted by Ted Gorab Oct. 3, 2019, 6:09 p.m. Basements improvements 4 Responses

How do you prevent walls from rotting in humid climates?

...air barrier to limit the amount of humid air that will escape through walls. The most important thing to do is what you are already doing, which is to consi...

Posted by Rose Alderson Nov. 5, 2018, 4:34 p.m. Wall assemblies - new construction 1 Responses

Combo structural sheathing, WRB and thin insulation panel in Ontario?

...membrane, which is for sure a vapor barrier, and you wouldn’t want that on the exterior of a wall in Ontario. The BP product looks to be more breathable, that...

Posted by Steve Bull Jan. 14, 2020, 6:06 p.m. Walls and Roofs 3 Responses

Do I need a standard 6 mil poly vapor barrier with dense cellulose exterior wall?

...barrier over the cellulose on the inside under the drywall, will I then cause vapor to be trapped between the outside vinyl /foam board and poly barrier. The fo...

Posted by jeff Chormann May 1, 2020, 9:18 a.m. Air and vapour barriers 1 Responses

Can you use a vapour retarder paint on the ceiling instead of using a poly vapour barrier?

...air barrier , we had our poly barrier go through the wall assembly and taped it to the exterior air barrier membrane. That would be a solution for new builds,...

Posted by Anwas Qwelten June 8, 2019, 3:56 p.m. Air and vapour barriers 2 Responses

Is There a Difference Between an Air Barrier and vapor barrier?

...air barrier and not the vapor barrier that is compromised, though it may well be the same product so that is kind of splitting hairs. What is almost certainly...

Posted by Sherri Mccormick Aug. 17, 2018, 3:24 p.m. Roof assemblies - renovation 3 Responses

Should a Vapor Barrier be installed over Exterior Grade Plywood?

...Barrier to be necessary? Thank-you Michael Vapor barriers can be a problem with homes that are air conditioned, because it reverses the vapor drive. When it is ...

Posted by Michael Klauck March 6, 2020, 1:24 p.m. Air and vapour barriers 1 Responses

What is the best practice to insulate a crawl space floor?

...membrane first and put new flooring on top, that would be good for an air barrier, it would also keep the vapor barrier on the warm side.

Posted by austin Fanning March 16, 2020, 8:55 a.m. Crawl spaces 4 Responses