Vapour barrier / Discussions

Do I need a vapour barrier in Ontario?

...vapour barrier on the interior warm side if I'm using house warp on outside? Will a good sealing primer prevent any moisture from travelling through walls? Than...

Posted by Gordon Harold April 22, 2021, 9:28 p.m. Air and vapour barriers 0 Responses

Does paint work instead of a poly vapour barrier?

...vapour barrier, several coats of paint, and specifically oil paint can make a suitable vapour barrier. You can even buy vapor barrier paint / vapor retarder pri...

Posted by Bill Fletcher May 6, 2020, 1:46 p.m. Air and vapour barriers 1 Responses

Should I use vapour barrier on ceiling of three season cottage?

...vapour barrier. It will also act as an air barrier if you tape it well, so it will be more efficient and not feel as drafty. Unless you plan to have AC and keep...

Posted by Erica Pennell Sept. 14, 2021, 7:58 a.m. Wall assemblies - renovation 1 Responses

Where does a vapour barrier go when building a shed in southern Ontario?

...vapour barriers, air barriers, etc, how they work, how they differ... I wonder what my next best move would be. Currently I have 2x4 16"oc walls with 1/2 plywoo...

Posted by Charley Nelson Nov. 5, 2020, 10:09 a.m. Wall assemblies - new construction 1 Responses

A different wall and ceiling vapour barrier treatment in the Eco-home: How come?

...vapour treatment was different from using poly in the roof...having convincingly demonstrated why the wall vapour barrier system and wall construction was bette...

Posted by James Turk Nov. 22, 2021, 11:37 a.m. Air and vapour barriers 1 Responses

How do I get rid of moisture with cement floor crawl space that has a vapour barrier?

...vapour barrier is wet on one side, that just means it’s doing its job. If you have a crawl space with a vapour barrier and a dehumidifier it should be pretty ...

Posted by Cindy Chatham 04 chatham Aug. 25, 2020, 4:47 p.m. Crawl spaces 1 Responses

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

...vapour movement comes from the fact that usually one product (6-mil polyethylene) is used as both the vapour barrier AND air barrier, but air leakage and vapour...

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

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

...barrier. Can you do this for the ceiling as well, thereby taking out that possible weak spot where the vapour barrier joins in with your walls? Vapour barrier p...

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

How would I rectifiy problem of foundation wall cracks with finished basement?

...vapour barrier on the inside basement walls. If the walls were removed (including tar paper, insulation, vapour barrier and drywall) would this be the best solu...

Posted by Terry P July 22, 2020, 7:07 p.m. Basements improvements 3 Responses

How do you install rigid insulation to the outside of a brick house"

...vapour barrier on the outside of a building, so hold that thought. Not having an interior vapour barrier can be rectified, but creating an air barrier after the...

Posted by Gordon CASWELL Dec. 13, 2019, 11:38 a.m. Wall assemblies - renovation 1 Responses

Where should I put a vapour retarder?

...vapour retarder and two-thirds outside. Would it make sense to put up one layer of insulation before wrapping with vapour barrier, and then two (or three) more ...

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

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

...vapour control. Nothing is truly ‘waterproof’, even a 6 mil polyethylene barrier will allow some moisture through. So the term ‘vapour barrier’ is a little misl...

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

What is the best way to Insulate the crawl space of an old home?

...vapour barrier and what to do around vents and plumping pipes when installing. There are a couple of ways to insulate the crawl space of an old home, either you...

Posted by Aj Jan. 21, 2020, 8:13 a.m. Crawl spaces 1 Responses

Can you help with passive solar greenhouse exterior wall details?

...vapour barrier, or let the wall breath (high humidity inside). Location and type of vapour barrier. 3) best rigid insulation type to create a thermal break / ...

Posted by Rick Carter Aug. 11, 2020, 8:06 a.m. Greenhouses and Sunrooms / Solariums 1 Responses

Can I put a breathable peel and stick weather (air) barrier on the inside walls and ceiling?

...barriers - Choosing a weather barrier house wrap, which is best? This page explains air / vapor barriers - The difference between air barriers and vapor barri...

Posted by Anomika Singhn Oct. 1, 2018, 9:56 p.m. Air and vapour barriers 1 Responses

Will spray foam on basement walls prevent condensation?

...vapour barrier back up the condensation formed again. That means the wall is wet, and the vapour barrier is preventing it from drying. Despite it being allowed ...

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

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

...vapour barrier is compromised, and this is a result of accumulated moisture thawing. I'm reluctant to replace a perfectly good roof until I need to. It is a rub...

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

How do you insulate a cathedral ceiling?

...vapour barrier first, then the rest of the cavity will be filled with dense pack cellulose insulation, with an intello vapour barrier holding cellulose all in. ...

Posted by Raoul Lions Oct. 19, 2019, 8:07 a.m. Roof assemblies - new construction 1 Responses