Spray foam / Discussions

Can you spray foam a house from the outside?

...spray foam from the outside. It seems we could also drill holes and blow spray foam in without removing the sheathing. Now that the blowing agents are more eco-...

Posted by Joan Lawrence July 11, 2019, 7:17 p.m. Wall assemblies - renovation 3 Responses

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

...spray foam rather than a failure. The wood studs will transfer far more heat than the Spray Polyurethane Foam (SPUF) , so what you are seeing could actually be ...

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

Can I spray foam insulate from the outside?

...spray foam properly from the outside you would need to see bare studs, and spray foam in the stud cavities. So that would leave you without sheathing, so you wo...

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

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

...spray foam insulation in general for basement conversions and which spray foam would be best for environmental reasons to help us make a decent choice. Thanks! ...

Posted by Rose Adams Jan. 9, 2020, 9:33 a.m. Insulation and soundproofing 1 Responses

Can you use spray foam Insulation under a slab?

...spray foam below a slab, but I’m not sure why you’d want to. Spray foam for sure has uses where it is the best choice by a long shot, but under a slab is not th...

Posted by Linda Martin April 6, 2020, 11:54 a.m. Slab on Grade 1 Responses

Which exterior insulation is best to create at thermal break in an bungalow in Alberta?

...spray cork renders vs. fully insulating the outside of our home with rockwool or foam board and new siding. We need a cost effective solution to create a therma...

Posted by Rebekah Barnes Jan. 17, 2020, 10:07 p.m. Wall assemblies - renovation 1 Responses

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

...foam sprayed on underside of roof deck. I am considering a peal and stick membrane under roof panels but have been advised I would be creating a 'double vapor...

Posted by Arthur Moore April 6, 2020, 12:57 p.m. Roof assemblies - renovation 0 Responses

How do you build a cathedral ceiling?

...spray foam insulation. My walls are double 2x4 stud walls 12 inches deep and will have 2-3 inches of closed cell spray foam insulation to create a air and vapou...

Posted by Raoul Lions Oct. 19, 2019, 8:07 a.m. Roof assemblies - new construction 1 Responses

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

...spray foam around perimeter and a dehumidifier with hose exiting to outside. The vents on this side have been sprayed shut with the foam. From reading the oth...

Posted by Beata Domanska May 25, 2020, 11:38 a.m. Crawl spaces 0 Responses

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

...spray foam inside the assembly cavity of my walls and unvented flat roof ceiling. It's impossible to air seal all the joints and sistered joists with caulk or s...

Posted by Anomika Singhn Oct. 1, 2018, 9:56 p.m. Air and vapour barriers 1 Responses

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

...foam board insulation with circumscribing spray foam in each rim joist (or maybe using purely spray foam to cover each rim joist). However, I can't tell whether...

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

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

...spray foam insulation on 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 polyethy...

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

How do you fix high humidity levels in a basement?

...spray foam insulation; the foundation around my house on the outside surface has been waterproofed (4 cracks were found inside the basement walls) and the gradi...

Posted by JR Tadinac Aug. 21, 2019, 11:26 a.m. Healthy indoor air quality 3 Responses

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

...spray foam them (like you it's not our first choice but it works) or you can cut pieces of foam boards and place them between the joists and seal them with acou...

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

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

...Spray foam on rim joists of old homes is one of the few places we regularly recommend it, as any material with spray foam on it is not recyclable or re-useable ...

Posted by Emil Idf Jan. 7, 2020, 8:34 p.m. Foundation and basement improvements 1 Responses

How can I heat a bedroom above a garage?

...spray foam over the system. Thanks in advance. Steve

Posted by Steve Dulmage April 30, 2020, 9:18 p.m. Wall assemblies - renovation 0 Responses

What is the best way to insulate the ceiling of my crawl space?

...spray-foam insulation. Since we moved in, I know that the addition's floor is very cold in the winter and in the summer we don't really have to use air conditio...

Posted by Judy Mendel Feb. 17, 2020, 11:10 p.m. Crawl spaces 4 Responses

Can you provide Crawlspace Insulation Design Assistance?

...spray foam would be problematic (I also have heard some spray foam horror stories that make me cautious). I would cap off my efforts with a continuous running d...

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