Vapour barrier / Discussions

What windows should you use when trying to build a Passive House?

...vapour barrier in roof system ( Hot roof). Both exterior and interior will be clad with log siding. I wanted to use wood windows to maintain as much as a rust...

Posted by Raoul Lions Jan. 25, 2019, 2:18 p.m. Windows and doors 1 Responses

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

...vapour barrier on the inside, and my choice would again be the Rockwool in that case to avoid incidentally installing an additional vapour barrier on the outsid...

Posted by Sylvie Gagnon Dec. 12, 2017, 11:58 a.m. Wall assemblies - renovation 1 Responses

Can I spray foam insulate from the outside?

...barrier . And read here for more information about choosing breathable weather barriers . Most specifically, read our guide page to find the best way of insta...

Posted by Kurt Klischuk June 6, 2019, 8:56 a.m. Wall assemblies - renovation 1 Responses

Is the ZIP sheathing system good or bad for water control?

...vapour barrier on the exterior sheathing and therefor have never needed to worry about poly vs. vapour barrier paint. In my opinion, the paint seems like a grea...

Posted by Trevor Prinz Nov. 26, 2019, 4:03 p.m. Walls and Roofs 4 Responses

Is a vapor barrier necessary under a concrete slab with foam insulation and if so, where does go?

...barriers as a radon barrier, which is better than nothing, but I’d want a thicker one for my home. There is a barrier called Radon Block, which is first of al...

Posted by Grady 22 Aug. 17, 2019, 12:19 p.m. Air and vapour barriers 3 Responses

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

...barrier vs vapor barrier concepts. My house is above a dirt crawl space. And we have a very high water table at 18 inches!!! It is definately a part of my stack...

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

Can you use polyiso insulation on the exterior of a wall behind cedar siding on the west coast?

...barrier. Using it on the outside means you are installing an exterior vapour barrier and that’s not a good thing. what made you choose Polyiso? We would alt...

Posted by Iain Matheson Jan. 28, 2020, 10:38 p.m. Wall assemblies - renovation 1 Responses

Do you have a diagram showing effect of winds on the pressure inside the house?

If the wind is from the south, where and how are positive pressures created in the home? Unfortunately we don’t have any diagrams to clearly depict the effects...

Posted by Bryan Bargen June 8, 2018, 5:20 p.m. Air and vapour barriers 1 Responses

How can I get rid of moisture between the vapor barrier and the insulation in a basement?

...barrier . So the short story is, despite that fact that so many builders keep putting vapour barriers on the interiors of basement walls, it is the worst thin...

Posted by David Mitchell Aug. 14, 2018, 6:32 p.m. Basements improvements 2 Responses

Halo Exterra rigid exterior insulation - has anyone work with it?

...barriers and vapour barriers. Glad you're finding value in our pages, hope this all helps! The Difference between air barriers and vapor barriers Hi Mike ...

Posted by George Shannon Jan. 21, 2020, 3:39 p.m. Insulation and soundproofing 3 Responses

Do frost lines where studs are on a wall show a failure of spray foam insulation?

I have a customer with frost problems whose home shows every stud from the outside on a winter day. Would you say their spray foam insulation has failed? It's ...

Posted by Gerald Crozier July 22, 2019, 10:24 p.m. Insulation and soundproofing 1 Responses

What is the best way to insulate a crawlspace to keep humidity down and stop odors?

I have a crawlspace with 4' concrete walls and a cement floor, insulation between the floor joists and has 3 - vents to the outside. I am thinking of 1" foam b...

Posted by Dave Bell Oct. 24, 2019, 3:57 p.m. Crawl spaces 3 Responses

How do you best use polyiso insulation in a basement?

...barrier & ½” gypsum drywall, sealed with drywall sealer and painted with vapor barrier paint. What problems do you see with this detail? Thank you Polyiso rig...

Posted by Iain Matheson Jan. 24, 2020, 7:45 p.m. Basements improvements 1 Responses

Can you provide Crawlspace Insulation Design Assistance?

...barrier, and enable you to create a crawlspace radon barrier as well. Insulating the joists is a fine idea, but I would be super careful about keeping the moi...

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

How do you prevent mold in a finished basement?

...barrier. The scariest part is that our house was only built in 2007! Now we've managed to strip all this smelly mess out, we tried to get quotes off contracto...

Posted by Brian Cole Nov. 22, 2019, 10:22 a.m. Basements improvements 1 Responses

How well do Legalett slab on grades work?

We are planning a build for June 2020 in Prince Edward County, Ontario where there is 1 ft of topsoil, 2 ft of clay and then bedrock. Structure planned is a bu...

Posted by Steve Sykes Aug. 18, 2019, 3:21 p.m. Slab on Grade 1 Responses

Should I insulate my basement ceiling?

My bungalow is around Toronto, and is a little over 100 years old with block walls in the basement. we recently learned our basement wasnt insulated properly, ...

Posted by Nina Hartt March 21, 2019, 8:23 a.m. Basements improvements 1 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 2 Responses