Foam on basement walls / Discussions

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

...on was added on one of the walls (all others checked and fine) condensation is building up after I waited a month or so into winter and pulled the insulation ou...

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

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

...foamboard to my basement foundation walls. From all of my reading it says that your basement foundation walls can only dry to the inside. If I put foamboard on ...

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

How thick should EPS foam insulation on basement walls be?

...on to use when finishing my basement. I was on a website of an eps insulation manufacturer and under their technical/spec section for this particular rigid pane...

Posted by Derrick R March 17, 2021, 9:13 p.m. Insulation and soundproofing 3 Responses

Can you install foam boards directly against basement walls?

...one recently in BC - panels stuck directly to concrete walls with low expansion pro Sikka foam as per manufacturers recommendations ( Airboard ), then they were...

Posted by Ted Gorab Oct. 3, 2019, 6:09 p.m. Basements improvements 16 Responses

What is the best way to install 5" of XPS rigid foam on interior basement walls?

...onths with iso. Would it work in a basement situation where our typical winters are -20 to -25? I did see a discussion you commented on for a Vancouver environm...

Posted by Sean MacDonald June 14, 2021, 10:42 a.m. Foundation and basement improvements 8 Responses

Will spray foam on basement walls prevent condensation?

...onse. In response to your questions. First the studs are not against the concrete there is a slight separation, but there is not foam insulation or tar paper ag...

Posted by Michael Scott April 12, 2021, 9:17 p.m. Basements improvements 3 Responses

What is the best way to insulate my basement?

...Foam Board Insulation over the bare concrete and leave the framed walls insulated as the are? 2. Install Foam Boards over the concrete and replace the foam in...

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

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

...on as to 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....

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

Why is there condensation in between 1.5" polyiso board and roxul insulation?

...basement. I used one and a half inch polyiso board insulation glued to the wall with adhesive and I left a half inch Gap all around the board to spray foam. In ...

Posted by Tyler Norrie Feb. 9, 2021, 2:32 p.m. Basements improvements 0 Responses

Should you seal all rods and penetrations for a radon barrier?

...ons though, is this new construction or renovation? Making sure the walls are sealed is an important part of radon mitigation, but it is for sure secondary to t...

Posted by D H Dec. 25, 2020, 9:08 p.m. Healthy indoor air quality 1 Responses

How should I insulate basement Walls in climate zone 5?

...oncrete and studwall a terribly idea if walls are already dry and mold free? the exterior of the basement walls has 2” of foam on them so any warmer air from fi...

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

What is the best way to install basement insulation with existing framing?

...on above grade walls, but below grade in basements it usually leads to rotting walls and mold. If there is no poly on the walls I am a bit less convinced that...

Posted by Nick Trotta Sept. 20, 2021, 8:29 p.m. Foundation and basement improvements 7 Responses

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

...foam board insulation to cover the actual concrete walls of a basement like mine--at least when one considers that my basement concrete has already had many yea...

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

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

...foam on rim joists of old homes that are NOT embedded in concrete is one of the few places we regularly recommend using it, as any material with spray foam on i...

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

How do you fix high humidity levels in a basement?

...One year later, the moldy batt insulation in the basement has been removed and replaced with spray foam insulation; the foundation around my house on the outsid...

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

Should I put foam boards right against my basement wall or leave an air gap?

...on't know if this will affect anything.. I found a tiny stream of light coming through only one block and had to seal it. Rain does not get directly on the wall...

Posted by Elijah Hargett Jan. 9, 2021, 5:31 p.m. Foundation and basement improvements 4 Responses

What’s the best insulation system for a brick/masonry basement foundation wall?

...onry basement foundation walls. I read in one of the responses regarding a stone and mortar wall that installing rigid foam insulation may impact the mortar bec...

Posted by Ryan Essex Nov. 29, 2021, 8:17 a.m. Basements improvements 2 Responses

Basement reno - How do I effectively insulate my basement?

...one tells you that, they're wrong. It depends on your climate zone , the water table on your property , and your own personal preferences for material selection...

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