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"Vapor barrier"

Vapor barrier / Discussions

  • 19 - 36 of 60 Posts

Can I put a breathable peel and stick weather (air) barrier on the inside walls and ceiling?

...barriers - Choosing a weather barrier house wrap, which is best? This page explains air / vapor barriers -  The difference between air barriers and vapor barrie...

Posted by Anomika Singhn Oct. 1, 2018 Air and vapour barriers 1 response

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 Roof assemblies - renovation 3 responses

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

...vapor barrier i.e. the side closest to the insulation.  The vapor barrier is dry to the touch from inside the basement. The answer is actually pretty easy but n...

Posted by David Mitchell Aug. 14, 2018 Basements improvements 62 responses

Why is there mold on particle board outside vapor barrier on new addition?

...vapor barrier) and difficult to escape on the other side (OSB) is likely part of the problem. The other thing at play here is the interior vapor barrier and air...

Posted by Christine ML June 7, 2020 Wall assemblies - renovation 1 response

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 ...

Posted by jeff Chormann May 1, 2020 Air and vapour barriers 2 responses

What is the best way to Insulate a basement and floor joists that are embedded into the concrete?

...barrier afterwards/ that would actually be a bit better. There was usually a poly vapour barrier installed after the insulation and stud wall seemingly to ensur...

Posted by David Pereira April 28, 2020 Foundation and basement improvements 2 responses

is a double vapor barrier on a South Florida roof bad?

...barrier but not a vapor barrier, would the moisture only travel one way? I have read one option is to a/c the attic space, another is to install the 'peel and s...

Posted by Arthur Moore April 6, 2020 Roof assemblies - renovation

Where should I put a vapour retarder?

...vapor barrier If you aren’t planning to add air conditioning it may be a lot of effort to mitigate a very minimal risk, so the big question really is about whet...

Posted by Jeffrey Connell March 14, 2020 Wall assemblies - new construction 4 responses

Should a Vapor Barrier be installed over Exterior Grade Plywood?

...Vapor 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...

Posted by Michael Klauck March 6, 2020 Air and vapour barriers 1 response

Followup to the question How do you install Larsen Trusses on a home in Minneapolis?

Perhaps my wording should have been, wrap the poly around the sheathing, then nail on the Larsen Trusses. My house like most in built in the early 1900's, has i...

Posted by Ken Traefald Feb. 27, 2020 Wall assemblies - renovation 1 response

How do you remove water droplets from under a crawl space vapor barrier?

...vapor 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...

Posted by Paul Racioppo Feb. 7, 2020 Crawl spaces 3 responses

How do you best use polyiso insulation in a basement?

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

Posted by Iain Matheson Jan. 24, 2020 Basements improvements 1 response

What is the best way to Insulate the crawl space of an old home?

...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 can ...

Posted by Aj Jan. 21, 2020 Crawl spaces 1 response

What is the best way to insulate the basement of an old house?

...vapor barrier, but I would put the vapor barrier right against the foam and do the poly on top. And as for finishing the floor afterwards, yes you can, but I’m ...

Posted by Bryan Squirrell Jan. 14, 2020 Basements improvements 1 response

Combo structural sheathing, WRB and thin insulation panel in Ontario?

...barrier in terms of vapor permeability - Weather barriers and home wraps – which one is best? We also have this page that will top up your understanding, about...

Posted by Steve Bull Jan. 14, 2020 Walls and Roofs 3 responses

What is the best way to insulate embedded joists in a basement Montreal Home?

...Vapor barrier. The basement is also dry and not humid. The joists are fully embedded inside the concrete slab. Hence, the floor above close to the baseboard is ...

Posted by Emil Idf Jan. 7, 2020 Foundation and basement improvements 1 response

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 no...

Posted by Gordon CASWELL Dec. 13, 2019 Wall assemblies - renovation 1 response

In the winter should you heat a low/dirt floor crawl space with a furnace vent?

In buying a old house with a low/dirt floor crawl space and plumbing under the home, would heating the part of the plumbing area cause any mold or other problem...

Posted by janis hobson Dec. 11, 2019 Crawl spaces 1 response
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