Polyethylene vapour barrier / Discussions

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

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

...barrier to the inside, meaning – if you have a polyethylene membrane on the ceiling as an air and vapour barrier, you need to make sure that it is sealed to the...

Posted by Sylvie Gagnon Dec. 12, 2017, 11:58 a.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 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

How do you fix a moisture problem in a finished basement?

...vapour barrier, so you wouldn’t need to apply a typical 6 mil polyethylene vapour barrier on the wall after the foam (though in some areas building inspectors m...

Posted by Margo MACFARLANE Oct. 28, 2019, 10:24 a.m. Foundation and basement improvements 1 Responses

How do you insulate a cottage crawlspace? It's in the Haliburton Highlands

...polyethylene vapour barrier to the ground below so moisture doesn’t evaporate into the crawlspace and then the house. Once you’ve had a look at our crawlspace g...

Posted by Beata Domanska May 25, 2020, 11:38 a.m. Crawl spaces 1 Responses