Air barrier / Discussions

How do you insulate a crawlspace with dirt floor?

...barrier will keep the moisture down. For the addition that is on concrete piers, if that means air (and wildlife) are free to travel underneath it, then you c...

Posted by sal Bellicoso Oct. 30, 2019, 4:56 p.m. Crawl spaces 1 Responses

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

...barrier that you may have seen in that article is mostly to satisfy building inspectors, or to be used as part of a radon gas barrier. Often times an inspector ...

Posted by Bryan Squirrell Jan. 14, 2020, 7:59 p.m. Basements improvements 1 Responses

Can you use Foam boards on basement walls to stop condensation?

...air from touching the concrete and condensating...but wanted to get opinions prior to spending $300. Thanks The air space is for sure causing the problem. The...

Posted by Chad Johnson Dec. 21, 2019, 7:59 p.m. Basements improvements 3 Responses

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

...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 for s...

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

Improving the efficiency of a home built in 1978 during renovations, do I need an HRV?

...air quality could/should be improved in older leaky homes as well. Or would the excessive air leaks make the HRV not effective? The only way to truly know if ...

Posted by joe cruikshank Feb. 8, 2020, 12:08 p.m. HRV and ERV 1 Responses

How do you Insulate a 3 season cottage?

...air and vapour barrier. This wouldn’t be my recommendation if you were looking for a fully winterized cottage that would act as a full-time home, in that case w...

Posted by Terry Skindilias April 23, 2019, 9:27 a.m. Wall assemblies - renovation 3 Responses

What is the best foam board insulation under drywall?

...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 some evi...

Posted by Wesley Pracht Jan. 11, 2020, 8:10 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?

...air, vapour and/or radon barrier, when connections are foamed or taped. MPI is available in rolls or sheets. Optional T&G connections."

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

How do I stop a leak from my attic?

...air barrier and vapor barrier properly at the same time. It’s not necessarily an easy job, but once you remove the existing batts you could lay down a 6 mil pol...

Posted by Markus Duess Feb. 11, 2019, 12:42 a.m. Roof assemblies - renovation 1 Responses

How do you insulate a cottage crawlspace? It's in the Haliburton Highlands

...air hits the cold surfaces of a crawlspace or basement as it can lead to condensation forming. Is your dehumidifier a fairly modern one that shows a reading of ...

Posted by Beata Domanska May 25, 2020, 11:38 a.m. Crawl spaces 1 Responses

What is the best material to use on top of plywood for water proofing?

...barrier / exterior air barrier, see our how to install an air barrier properly DIY video . ZIP systems are a good ‘all-in-one house sheathing / weather barrier ...

Posted by Babak K July 27, 2020, 12:22 a.m. Air and vapour barriers 3 Responses

Should I install basement drain tile vents?

...air pass into the wall assembly to let moisture evaporate? A properly built wall should not have a condensation issue, so is this contractor about to finish y...

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

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

...air 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 pr...

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

How do you insulate a crawlspace?

...air can condense on the cooler surfaces. Another possible cause of the moldy insulation is if you didn’t include a vapor barrier on the warm side of the insulat...

Posted by Drew Weistend Nov. 14, 2017, 9:22 a.m. Crawl spaces 1 Responses

My basement is smelly and humid, what can I do about that?

...air, but that’s still better than doing nothing. Insulating your basement from the inside could in the long run only hide the problem. Over time, the wall could...

Posted by Jeff O. Feb. 8, 2017, 10:22 a.m. Foundation and basement improvements 3 Responses

Can I add Larsen Trusses and cellulose to 1920s House in Minneapolis?

...air barrier, then install Larsen trusses, cellulose and a breathable house wrap membrane you would be far better off than the idea of an exterior vapor barrier....

Posted by Ken Traefald Feb. 17, 2020, 2:30 p.m. Wall assemblies - renovation 3 Responses

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 ...

Posted by Ken Traefald Feb. 27, 2020, 1:49 p.m. Wall assemblies - renovation 1 Responses

What is the right amount of insulation for a house?

...air barrier and vapour control layer. If you do go for modelling then that company or person should be well-versed in building science. Here are a few links t...

Posted by Ryan Gerbrandt Feb. 11, 2019, 9:57 a.m. Passive solar home design 4 Responses