Vapor barrier / Discussions

Spray Foam for basements, which of the different types are best environmentally?

...barrier, a vapor barrier and for energy-efficiency by reducing heat loss, as it has one of the highest per-inch r values of commercially available insulation pr...

Posted by Rose Adams Jan. 9, 2020, 9:33 a.m. Insulation and soundproofing 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 3 Responses

What insulation should I put on basement block walls that is resistant to mold?

...vapor barrier on the walls if that's where the moisture issue is coming from. If it's a poured concrete floor and it has no vapor barrier beneath then that will...

Posted by Ken Gee July 31, 2019, 3:25 p.m. Basements improvements 3 Responses

What is the best foam board insulation under drywall?

...vapor barrier with the foil barriers on either side. So you wouldn’t need to add a 6-mil vapor barrier afterwards, you just need to tape the joints. There is so...

Posted by Wesley Pracht Jan. 11, 2020, 8:10 p.m. Wall assemblies - renovation 1 Responses

What is the best way to insulate my basement?

...vapor barrier after the studs, which only serves to keep walls wet, not keep them dry. Read more here – Why basements are moldy and how to fix them .

Posted by Chris Rogers Oct. 27, 2019, 11:23 a.m. Foundation and basement improvements 1 Responses

How do you insulate a ceiling and finish it on the inside with wood?

...vapor barrier. And it sounds to me like you have something of a timber frame ceiling at least, which would give you room to insulate between the purlins or ra...

Posted by antonija klotz Oct. 20, 2019, 7:31 p.m. Roof assemblies - renovation 1 Responses

What is the best way to insulate a 2x8 wall?

...barriers vapor barriers etc, which will likely help as you try to settle on a wall system. Ok on the is what I was thinking not breathable.....there is a produc...

Posted by Michael Sweglar July 8, 2020, 10:43 a.m. Wall assemblies - new construction 3 Responses

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

...barriers, vapor barriers, some with none and some with both. In cold climates you want vapor barriers on the interior, so you need to be careful not to apply a ...

Posted by George Shannon Jan. 21, 2020, 3:39 p.m. Insulation and soundproofing 6 Responses

How do you insulate an exterior wall from the outside?

...barrier, the vapor barrier and the thermal barrier as well. But yes, sometimes the price can be a bit prohibitive. However, it does work well and you also need ...

Posted by Stuart Seldon Feb. 11, 2021, 12:21 p.m. Wall assemblies - renovation 1 Responses

Is EPS or XPS better for use in basement rim joists? Should faced or unfaced foam boards be used?

...vapor barrier’ in residential constrution . So that would be sufficient for us, and if you get one with a foil membrane then it is even less permeable that XPS,...

Posted by Thomas Dispenza Sept. 8, 2019, 12:43 a.m. Basements improvements 6 Responses

How do you install rigid insulation to the outside of a brick house"

...barrier are two different things, so let’s address them separately. And since you didn’t write ‘ vapor barrier ’ I suspect you are writing from Canada? There’s ...

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

What is the best way to insulate rim joists with EPS and batts?

...vapor barrier and the thermal barrier. For an air seal, you may want to actually do that first, which could be a simple matter of applying caulking or acoustic ...

Posted by Steve J July 18, 2019, 3:53 p.m. Basements improvements 1 Responses

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

...vapor 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 woul...

Posted by Iain Matheson Jan. 28, 2020, 10:38 p.m. Wall assemblies - renovation 2 Responses

Can a manufactured home be retrofitted with hempcrete?

...vapor barrier, and you can convert it into a cute tiny house with wood siding. You can even put a pitched roof over top and you can fill the wall cavities with ...

Posted by Chryss James Nov. 19, 2020, 9:06 p.m. Wall assemblies - renovation 1 Responses

Can you install foam boards directly against basement walls?

...vapor barrier) you would be ensuring that the wall cannot dry to the interior either, so what you would have is an ideal mold incubation chamber. If you are s...

Posted by Ted Gorab Oct. 3, 2019, 6:09 p.m. Basements improvements 14 Responses

Can basement walls to dry to the inside with foam board?

...vapor barriers on basement walls. The straight answer is that it’s fine if concrete stay wet. Virtually every concrete foundation wall will stay wet indefinit...

Posted by Tim Hanrahan Aug. 20, 2020, 12:34 a.m. Basements improvements 6 Responses

Should I install basement drain tile vents?

...vapor barrier), whether it's poured concrete or block foundation etc.. whatever you can tell us. And yes, putting drains through the ground could contribute t...

Posted by gary taube Dec. 11, 2019, 10:14 p.m. Foundation and basement improvements 3 Responses

What is the best way to do a basement renovation?

...vapor barriers was originally to prevent moisture accumulation and damage in walls, which it does above grade, but below grade a vapor barrier CAUSES moisture a...

Posted by BIG FOOT Nov. 18, 2020, 9:33 a.m. Basements improvements 1 Responses