Vapor retarder / Discussions

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

I saw in your wall video that you advise to use a vapour retarder paint along with an outside air barrier. Can you do this for the ceiling as well, thereby tak...

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

Can you Insulate a Cinder block basement foundation with Rockwool?

...vapor retarder or just use latex paint ? Code doesn’t require any vapor retarder in my area. But I am also trying to avoid getting condensation on cold foundati...

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

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

...vapor retarder primer is an option since you've dealt with air leakage), or an interior air/ vapor barrier like the standard 6-mil poly. Feel free to give som...

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

Should a Vapor Barrier be installed over Exterior Grade Plywood?

...vapor barrier or vapor retarder, perhaps a ‘smart’ membrane. The following video explains fairly simply how vapor moves through walls and will help you understa...

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

Where should I put a vapour retarder?

...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 layers ...

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

How do you do a Vapour Barrier in a Dense Pack Cellulose Wall?

...vapor barrier , strapping and drywall. And to be clear, you absolutely need a vapor control layer of some kind on the warm side of the insulation to be complian...

Posted by Ian MacKay July 26, 2018, 2:48 p.m. Wall assemblies - renovation 3 Responses

How can I solve a moisture problem in attic from 1941 home?

...vapor, I wonder if I am subject to a lot of water vapor movement through the cellulose tiles in the kitchen , dining room, hallway, and 1 bedroom ceiling. Will ...

Posted by Rachel Katz June 8, 2019, 4:06 p.m. Air and vapour barriers 0 Responses

I'm looking at installing rigid insulation the exterior of My Double brick 1880s

...vapor barrier ’ I suspect you are writing from Canada? There’s no place in the great white north where you would want to put a vapour barrier on the outside of ...

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

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

...retarder primer) check with an inspector ahead of time. As for the toxicity, We used Benjamin Moore vapor barrier paint which was low VOC but not Zero VOC unfor...

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

Can you provide Crawlspace Insulation Design Assistance?

...vapor barrier / vapor retarder products are a poly, foil is among the least permeable materials, I just want to make sure you are getting the kind of product yo...

Posted by Randy Christensen Dec. 10, 2019, 12:17 p.m. Crawl spaces 1 Responses