Basement vapour barrier / Discussions

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

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

Posted by David Pereira April 28, 2020, 10:34 p.m. Foundation and basement improvements 2 Responses

How do you fix a moisture problem in a finished basement?

...basement walls is not a bad one. However, spray foam itself is a vapour barrier, so you wouldn’t need to apply a typical 6 mil polyethylene vapour barrier on th...

Posted by Margo MACFARLANE Oct. 28, 2019, 10:24 a.m. Foundation and basement improvements 1 Responses

How do I insulate my half below grade basement?

...basement is half above grade. I have seen in the CMHC book a scenario where a vapour barrier starts on the concrete, just above grade height, goes down the co...

Posted by tom mckeand Oct. 14, 2019, 11:01 p.m. Basements improvements 1 Responses

Basement reno - How do I effectively insulate my basement?

...vapour barrier laytex paint. Which EPS thickness should I go with? Concrete Slab: DMX aiflow dimple mats +(3/4" EPS, needed? ) +OSB +flooring of choice Head...

Posted by Steve J Feb. 13, 2019, 10:25 p.m. Foundation and basement improvements 2 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

How should I insulate basement Walls in climate zone 5?

...basement walls roughly 3” away from concrete and then place mineral wool between the studs. I do not plan to apply any vapor barrier to the concrete or between ...

Posted by Chad Johnson March 25, 2019, 8:33 p.m. Basements improvements 1 Responses

How do you prevent mold in a finished basement?

...basement earlier this year and when the contractors started pulling off damaged drywall we were disgusted to find that our basement wall framing was rotten in m...

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

Can you Insulate a Cinder block basement foundation with Rockwool?

...basements. Basements and basement walls work differently in summer and winter than walls exposed to air . Basement walls are always cold but touching earth ...

Posted by Victor B June 19, 2019, 11:41 p.m. Basements improvements 5 Responses

Should I install basement drain tile vents?

...basement drain system and the contractor wants to install vents through the concrete floor at the wall Junction to drain moisture condensate from basement walls...

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

How do I waterproof a foundation from the inside?

...basement walls and floors – insulation, vapour barrier, finishing materials, how it is assembled, etc. If your basement currently has no finished flooring, an i...

Posted by Kurt Brenner Nov. 14, 2017, 9:47 a.m. Foundations and Basements 1 Responses

What do I in my basement where new insulation meets old?

...basement foundations. Is this a cause for concern for moisture, air sealing, and different vapour methods and insulation types? (Old Poly vapour sheet and fib...

Posted by Steve J July 20, 2019, 10:01 p.m. Basements improvements 2 Responses

I have many issues with my house where should I start?

...basement and concrete block foundation addition. The basement is not insulated, the roof has very little insulation with vermiculite ( been tested ok) in the at...

Posted by Bryan Squirrell Sept. 29, 2019, 3:08 p.m. Wall assemblies - renovation 1 Responses

Should I insulate my basement ceiling?

...basement. we recently learned our basement wasnt insulated properly, and probably done to hide some flaws. In response we’ve decided to rip it all out and do an...

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

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

...basement (walls and floor) surfaces are formed of poured concrete. One side of the basement has full-size regular casement windows, but the bottom of those wind...

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

How do you insulated a crawlspace with dirt floor?

...vapour 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, the...

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

Can you provide Crawlspace Insulation Design Assistance?

...basement adjacent to the crawlspace contains our oil-fired heating system; there is a small opening allowing access to the crawlspace from the "full" basement (...

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