Rigid board / Discussions

Should I install a poly moisture barrier before the rigid foam board against a basement wall?

...rigid XPS foam board insulation held in place with the special plastic pegs (since the poly will not allow adhesive to affix it to the wall), blue sheathing tap...

Posted by DONandCATHY Crenna Dec. 14, 2020, 2:21 p.m. Basements improvements 3 Responses

Which type of exterior insulation to use on a house?

...rigid insulation would be best for this application. My main concern is vapour/moisture issues between the rigid insulation and buffalo board. My original pla...

Posted by Trevor Marshand May 26, 2020, 1:16 p.m. Insulation and soundproofing 1 Responses

What is the best exterior rigid foam insulation for under a deck?

...rigid foam board. The front porch is covered by an overhang and deck boards. The side of the porch will be skirted with 2x6's. So the rigid board will be protec...

Posted by Andrew Cherubini March 21, 2021, 9:02 p.m. Insulation and soundproofing 3 Responses

Can you install foam boards directly against basement walls?

...rigid foam 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 15 Responses

What sized does the Hemp Insulation come in?

...rigid board? Can you make it in rolls? Thank you, Gary

Posted by Gary Stapley Feb. 5, 2021, 6:15 p.m. Insulation and soundproofing 0 Responses

What is the best exterior Wall and Roof Rigid Insulation for a barn renovation?

...board. Metal roof attached to strapping. Walls much the same but w/ one layer of 4" rigid insulation. 1/4 " Plywood sheathing attached to the Girts, Rigid Ins...

Posted by Ron Busch June 27, 2020, 3:50 p.m. Wall assemblies - renovation 1 Responses

What type of insulation under an outdoor deck frame with 2x8s?

...rigid board on top of the 2x8 studs. I Just hope the 1.5 inch of space left on the 2x8 (7 1/2") wont cause any problem or fall down on the rigid board. No vapor...

Posted by Eric Dalpe Sept. 15, 2020, 9:13 a.m. Wall assemblies - renovation 4 Responses

What is the best method of building a slab on grade?

...rigid board under the exterior of the slab, Tpye III EPS foam under footings and a skirt of R8 insulation extending out 4 feet. ARe these suitable for such cond...

Posted by Jay Law April 19, 2021, 3:09 p.m. Slab on Grade 1 Responses

Where should I put a vapour retarder?

...rigid rockwool insulation would go up next, then strapping for the exterior sheath, board and batten. I have read that the optimum scenario is to have one-third...

Posted by Jeffrey Connell March 14, 2020, 4:25 p.m. Wall assemblies - new construction 4 Responses

How do I best insulate my century home from the inside?

...rigid board over the studs to provide a thermal barrier + Intello (or other) air/vapour barrier to allow breathing/drying + drywall (taped and painted). What in...

Posted by Merner Row Design May 12, 2021, 12:22 p.m. 0 Responses

Can you spray foam a house from the outside?

...Board, and want to improve the insulation at the same time. Right now there is 1/2" rigid foam with foil directly under the siding. Someone recommended removing...

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

Is there any risk to a concrete foundation from adding interior insulation?

...rigid insulation board directly against the concrete and then a framed stud wall with mineral wool batts and drywall with latex paint. I'd like to do something ...

Posted by Drew Tozer Jan. 5, 2021, 12:57 p.m. Basements improvements 4 Responses

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

...board insulation glued to the wall with adhesive and I left a half inch Gap all around the board to spray foam. In front of the wall I frame to buy for walls an...

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

How thick should EPS foam insulation on basement walls be?

...rigid panel it says the vapour permeablility for 1" is 0.5 perms. would using 1" panel be sufficient instead of the recommended 2"? EPS rigid foam insulation is...

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

What's the difference between EPS and GPS insulation?

...boards, which are very difficult to find here in QC, I've bumped into a 4' x 8' x 1" thick board, called GPS. Do you have a webpage about GPS insulation? I want...

Posted by Ronald Tetrault Feb. 3, 2021, 5:22 p.m. 0 Responses

What is the best foam board insulation under drywall?

...rigid insulation – Rigid insulation panels: which are best and where to use them While most insulation materials actually perform a little better the colder...

Posted by Wesley Pracht Jan. 11, 2020, 8:10 p.m. Wall assemblies - renovation 1 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 3 Responses

Can you use polyiso insulation on the exterior of a wall behind cedar siding on the west coast?

...rigid insulation panels here – Rigid insulation panels, how to choose the best ones for different applications You will read in that article a bit more abou...

Posted by Iain Matheson Jan. 28, 2020, 10:38 p.m. Wall assemblies - renovation 2 Responses