Vapor barrier / Discussions

Where is the correct vapor barrier location in Chicago?

...vapor barrier also be the air barrier? There is a difference between the two, read more here first – The difference between air barriers and vapor barriers ...

Posted by Joel Peerson Jan. 31, 2021, 7:31 p.m. Air and vapour barriers 2 Responses

How do you apply vapor barrier and insulation to a CMU house?

...vapor barrier. I have to install studs to the interior of the block for seismic resistance and attach the studs to the block. The block walls will basically bec...

Posted by Scott Brekke Nov. 22, 2019, 9:37 a.m. Basements improvements 2 Responses

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

...barrier and not the vapor barrier that is compromised, though it may well be the same product so that is kind of splitting hairs. This page explains it clearly ...

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?

...Vapor 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 ...

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

How do you remove water droplets from under a crawl space vapor barrier?

...vapor barrier? Water is acculating on the dirt side of the vapor barrier. If I crawlspace has water droplets forming under the poly vapor barrier (on the dirt...

Posted by Paul Racioppo Feb. 7, 2020, 3:49 p.m. Crawl spaces 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

How can I get rid of moisture between the vapor barrier and the insulation in a basement?

...vapor barrier in your comment above, I would use NO vapor barrier, or at the least choose one that lets moisture escape such as Certainteed breathable vapor bar...

Posted by David Mitchell Aug. 14, 2018, 6:32 p.m. Basements improvements 30 Responses

Should I vent the space between a block wall and vapor barrier?

...vapor barrier. I have no french drain or any drain sytem. I believe Im right when saying that that space between the block and barrier has to breath for the moi...

Posted by Nick Santore Oct. 10, 2020, 2:03 a.m. Basements improvements 1 Responses

Is a vapor barrier necessary under a concrete slab with foam insulation and if so, where does go?

...vapor barrier down before or after the EPS foam insulation and as there's a chance of radon what specification of vapor barrier do I need, plus can this do the ...

Posted by Grady 22 Aug. 17, 2019, 12:19 p.m. Air and vapour barriers 3 Responses

Is there anything I can do about a vapor barrier on the wrong side of a basement wall?

...vapor barrier and then drywall. So the vapor barrier seems to be on the wrong side to allow drying. I had one corner where baseboard was showing signs of dete...

Posted by Iain B Feb. 8, 2021, 2:21 p.m. Basements improvements 7 Responses

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

...barrier is okay? How do I convince the building inspectors? I can see how it doesn’t exactly look like a vapor barrier in the diagram as it is black, but it is ...

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

How do you re-do the insulation on a old cabin from the outside?

...vapor barrier needs to be installed on the warm side of the insulation . Putting a vapor barrier on the cold side of insulation means that warm humid air migrat...

Posted by Raphael Couture Sept. 14, 2020, 8 a.m. Wall assemblies - renovation 3 Responses

Will spray foam on basement walls prevent condensation?

...vapor barrier and insulation while doing a project. I had never noticed any issue prior, no water on the floor and no smells. It was by accident that I noticed ...

Posted by Michael Scott April 12, 2021, 9:17 p.m. Basements improvements 3 Responses

The thickness of vapor retarding latex paint - Is measurement wet or dry?

...vapor retarder primer (vapor barrier paint) in our Edelweiss LEED Platinum Demo House instead of a 6 mil poly vapor barrier , it was for the walls not the floor...

Posted by Kim Boas July 24, 2020, 10:36 a.m. Basements improvements 3 Responses

Where should I put a vapour retarder?

...vapor barrier If you aren’t planning to add air conditioning it may be a lot of effort to mitigate a very minimal risk, so the big question really is about wh...

Posted by Jeffrey Connell March 14, 2020, 4:25 p.m. Wall assemblies - new construction 4 Responses

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

...barrier joins in with your walls? Vapour barrier paint (or Vapor barrier paint in the U.S. ) is more of a solution for walls rather than ceilings to prevent the...

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

Should I remove the plastic sheet in my cellar?

...vapor barriers on basement walls always cause problems. The source of moisture isn’t the air in the basement, it’s the ground and the wet concrete. So the only ...

Posted by Justin D'Arcy Dec. 4, 2020, 12:13 p.m. Basements improvements 2 Responses

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

...barrier as an air barrier. Keep in mind that poly vapor barriers in homes with air condition are a problem in some locations, what climate zone or city are you ...

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