Rigid foam / Discussions

Can Rockwool be installed over Type II EPS?

...Foam Insulation & Styrofoam Sometimes adding XPS or EPS rigid foam to the outside of a house can cause problems since it can trap moisture. That said, it is m...

Posted by Brian Bonnell March 30, 2020, 11:04 a.m. Wall assemblies - renovation 1 Responses

Heco topix screws - which type should be used for attaching insulation outside a house?

Attaching battens through 4" EPS foam external insulation, should Therm Insulation or Stainless screws be used? Is it necessary to have the double thread desig...

Posted by Mike Taylor April 7, 2020, 4:45 p.m. Materials and resources 2 Responses

Can you spray foam a house from the outside?

...rigid foam with foil directly under the siding. Someone recommended removing the sheathing and doing spray foam from the outside. It seems we could also drill h...

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

I want to insulate the outside of my house, which type of insulation do you think is best?

...rigid foam panel and I don't want to choose the wrong one, which do you recommend and how much will I need? Thanks, Michael. When I drive by houses doing exactl...

Posted by Joe F Nov. 15, 2017, 10:34 a.m. Wall assemblies - renovation 7 Responses

Should a Vapor Barrier be installed over Exterior Grade Plywood?

...Rigid Foam insulation. In the future I may add A/C to the cottage. Do you believe a Vapor Barrier to be necessary? Thank-you Michael Vapor barriers can be a pro...

Posted by Michael Klauck March 6, 2020, 1:24 p.m. Air and vapour barriers 1 Responses

What is the best way to deal with a drop ceiling in a high humidity room?

...rigid foam insulation and then faced fiberglass batts and then plywood subfloor of the outdoor deck. The rigid foam was not sealed (no air barrier) and this p...

Posted by steve Roberts Dec. 24, 2019, 8:01 p.m. Walls and ceilings - interior surfaces 1 Responses

How do you insulated a crawlspace with dirt floor?

...rigid foam panels on the concrete block walls (2 inch) The cottage is 900 square ft. To complicate things, we have just made a 400 square foot addition on concr...

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

Can you install foam boards directly against basement walls?

...rigid fome to Install two inches of rigid insulation board directly against concrete. A mold expert told me to put the board on top of the framing, not directly...

Posted by Ted Gorab Oct. 3, 2019, 6:09 p.m. Basements improvements 4 Responses

What is the best way to insulate rim joists with EPS and batts?

...rigid EPS and see if you can make it continuous with the wall insulation below it. If you install several layers of EPS it will function just like a SIP wall, t...

Posted by Steve J July 18, 2019, 3:53 p.m. Basements improvements 1 Responses

Halo Exterra rigid exterior insulation - has anyone work with it?

...foam itself is the vapour barrier. So if your plan was either 4 inches of Rockwool or 4 inches of Halo rigid insulation, I'd be less concerned that if you were ...

Posted by George Shannon Jan. 21, 2020, 3:39 p.m. Insulation and soundproofing 3 Responses

Is a vapor barrier necessary under a concrete slab with foam insulation and if so, where does go?

...foam - with the added benefit of making sure that at least 2" of foam has zero possibility of getting moisture back in once the concrete slab has dried out beca...

Posted by Grady 22 Aug. 17, 2019, 12:19 p.m. Air and vapour barriers 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 0 Responses

What is the best way to insulate a crawlspace to keep humidity down and stop odors?

...Rigid Foam Board And about venting crawlspaces, that can be a problem depending on where you live. The foundation walls will be cool in summer, so drawing i...

Posted by Dave Bell Oct. 24, 2019, 3:57 p.m. Crawl spaces 3 Responses

What is the best way to insulate a home from the outside?

...foam could end up doing. [Another important side note – the rigid boards with foil on both sides are likely polyisocyanurate insulation, that is not the best ...

Posted by Sylvie Gagnon Dec. 12, 2017, 11:58 a.m. Wall assemblies - renovation 1 Responses

How do you build a cathedral ceiling?

...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 vapour barr...

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

What kind of insulation do you recommend to put on my exterior sheet rock wall?

...foam or similar) similar to the ones they use all over Europe. I am looking for a pointer on where to start and find more information. Thanks,

Posted by Uwe Thomas May 22, 2020, 10 p.m. Insulation and soundproofing 0 Responses

Can I purchase XPS made with HFOs?

...rigid insulation board you purchase will still have an impact several hundred times worse than EPS. And the moment that the switch is made, manfucturers will co...

Posted by Kate Noblio Dec. 14, 2019, 12:35 p.m. Insulation and soundproofing 2 Responses

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

...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 an ind...

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