Vapour / 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

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

...vapour barriers as being fundementally awkward, depending on which way heat was infiltrating. Talking to inspectors, I get the same cookie cutter response..."yo...

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

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

We are insulating roof from inside and then installing a wood ceiling. Wonder if there are any advantages to using a vapour barrier or whether this will actual...

Posted by Erica Pennell Sept. 14, 2021, 7:58 a.m. Wall assemblies - renovation 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 0 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

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

...vapour retarder paint along with an outside air barrier. Can you do this for the ceiling as well, thereby taking out that possible weak spot where the vapour ba...

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

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 diffusion becomes a bit more manageable. One option may be to apply vapour barrier paint / vapour retarder primer as we did on a demo house a few years a...

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?

...vapour barrier, meaning vapour will move through it so slowly that it would qualify as a vapour barrier, but it is highly unlikely youll find a building inspect...

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

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

...vapour barrier’ is a little misleading, hence my use of the term ‘vapour control layer’. And yes, you need some type of vapour control layer. I will look over...

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

How thick should EPS foam insulation on basement walls be?

...vapour permeablility for 1" is 0.5 perms. would using 1" panel be sufficient instead of the recommended 2"? EPS rigid foam insulation is made of tiny foam beads...

Posted by Derrick R March 17, 2021, 9:13 p.m. Insulation and soundproofing 3 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

What type of insulation should I put on the exterior of my new home?

...vapour barrier on the inside and just house wrap on the outside was what the original plans called for but I see many new homes wrapping the exterior with rigid...

Posted by Alex Kesheshian April 23, 2020, 12:22 a.m. Wall assemblies - new construction 1 Responses

Can you spray foam a house from the outside?

...vapour build up if we have a mix of plaster and lathe in the older parts of the house, with fiberglass and interior vapour barrier in the new parts? Yes you cou...

Posted by Joan Lawrence July 11, 2019, 7:17 p.m. Wall assemblies - renovation 3 Responses