Exterior air barrier / Discussions

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

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 2 Responses

Why is there mold on particle board outside vapor barrier on new addition?

...barrier and air conditioning the space. Here is another important page to read – Never Install Air-Conditioning in a Home with a Vapor Barrier You will read...

Posted by Christine ML June 7, 2020, 1:35 p.m. Wall assemblies - renovation 1 Responses

How do you seal windows from the exterior for water and air but not create a vapor seal?

...exterior. If there is no hole where air can escape on one side of the wall then it won’t enter on the other side, so one air barrier is enough. We covered the e...

Posted by Piyush Prince Nov. 7, 2018, 12:10 a.m. Windows and doors 1 Responses

How do you do a vapor barrier in a dense pack cellulose wall?

...air conditioning. Are you absolutely sure that no vapour barrier is okay? How do I convince the building inspectors? I can see how it doesn’t exactly look like ...

Posted by Ian MacKay July 26, 2018, 2:48 p.m. Wall assemblies - renovation 4 Responses

My window drips when I run my air conditioning. What is the fix?

...barriers can cause exactly such a problem in a house with AC, this article covers that - Why you should never put a poly vapor barrier in a house with air con...

Posted by Sean Sullivan Aug. 27, 2020, 10:36 a.m. Heat pumps, geothermal and AC 5 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

What is the best way to deal with a drop ceiling in a high humidity room?

...air barrier and possibly paint it to also be a vapor barrier. Then use unfaced mineral wool or fiberglass batts. But the tongue and groove boards would be naile...

Posted by steve Roberts Dec. 24, 2019, 8:01 p.m. Walls and ceilings - interior surfaces 1 Responses

How do I insulate my half below grade basement?

...exterior insulation, I'm guessing no exterior sealing. But dry dry dry inside. I like the idea of the 2" XPS with 4" studs and roxul insulation to give around...

Posted by tom mckeand Oct. 14, 2019, 11:01 p.m. Basements improvements 1 Responses

What windows should you use when trying to build a Passive House?

...barrier in roof system ( Hot roof). Both exterior and interior will be clad with log siding. I wanted to use wood windows to maintain as much as a rustic feel...

Posted by Raoul Lions Jan. 25, 2019, 2:18 p.m. Windows and doors 1 Responses

Basement reno - How do I effectively insulate my basement?

...air and vapour barrier and has a high per-inch R value. Besides spray foam, yes, you could put Rockwool in each cavity, then EPS in that same cavity (sealed to ...

Posted by Steve J Feb. 13, 2019, 10:25 p.m. Foundation and basement improvements 2 Responses

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

Can I spray foam insulate from the outside?

...air space so the exterior of the wall can dry. Here is our how to install siding properly video , and another on how to install a weather barrier . And read her...

Posted by Kurt Klischuk June 6, 2019, 8:56 a.m. Wall assemblies - renovation 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

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?

...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 how to insulate exterior w...

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

Which type of exterior insulation to use on a house?

...exterior weather barriers (WRBs) , as it could be a good opportunity to do an air barrier as well, which is a really good upgrade to do with older houses when y...

Posted by Trevor Marshand May 26, 2020, 1:16 p.m. Insulation and soundproofing 1 Responses

Which exterior insulation is best to create at thermal break in an bungalow in Alberta?

...air barrier on our 1970s raised bungalow. We have a fully insulated (with spray foam) basement up to the rim joists. This space is now wonderful to live in. ...

Posted by Rebekah Barnes Jan. 17, 2020, 10:07 p.m. Wall assemblies - renovation 1 Responses