Barrier / Discussions

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

What is the process to seal a house using Aero barrier spray?

...barrier will not work in the vertical plane. Can you explain this concept? the vertical plane need another method to seal? The Aerobarrier air barrier spray you...

Posted by Santiago Pacheco Feb. 13, 2020, 11:06 a.m. Air and vapour barriers 3 Responses

Do I need a vapour barrier in Ontario?

...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? Thanks!

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?

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

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

Why is there condensation behind my vapor barrier?

...barrier and then drywall today while putting up drywall noticed that the vapor barrier is covered with condensation how do I stop the condensation. Have put a h...

Posted by John Young Oct. 11, 2021, 4:50 p.m. Wall assemblies - new construction 1 Responses

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

...barrier because of dry rot. Luckily no cracks in the foundation and floor joists are fine but I noticed that barrier is extremely wet. Running a dehumidifier ha...

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

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

This house is located in SC and is built with 8" block walls. What is the best way to insulate and apply vapor barrier. I have to install studs to the interior...

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

Where is the correct vapor barrier location in Chicago?

...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 If you...

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

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

...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 it rea...

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

Should you seal all rods and penetrations for a radon barrier?

...barrier before installing xps foam panels on the interior basement walls? Yes, to reduce radon levels in homes and have an effective radon barrier, you would ne...

Posted by D H Dec. 25, 2020, 9:08 p.m. Healthy indoor air quality 1 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 I seal the air barrier at the top of the exterior wall?

...barrier that is intended as the air barrier. Often you will weather barriers taped like crazy all over but then leave a crucial component - like not taping the ...

Posted by Nicolas Jolicoeur Jan. 3, 2022, 11:05 a.m. Air and vapour barriers 5 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 do you remove water droplets from under a crawl space vapor barrier?

...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 side)...

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

Should a Vapor Barrier be installed over Exterior Grade Plywood?

...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 it is ...

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

How do you install a radon barrier in a crawlspace with an uneven floor?

...barrier covering the dirt, which also acts as the radon barrier. Radon gas is heavier than air, so keeping it contained underneath a polyethylene barrier is a g...

Posted by Reinhart Bigl Nov. 29, 2021, 4:01 p.m. Radon in Homes - Mitigation 1 Responses

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

...barrier system and wall construction was better for a Canadian climate...would one not then do the same for a roof? Hi James, there isn't the same inward vapor ...

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

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

...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 plywood exter...

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