Rigid foam boards / 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

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

...boards, then rigid foam insulation and then faced fiberglass batts and then plywood subfloor of the outdoor deck. The rigid foam was not sealed (no air barrie...

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

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

Can you install foam boards directly against basement walls?

...rigid foam boards against the wall THEN the stud wall, you don't want to have organic material exposed to moisture, particularly having a source of moisture on ...

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

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

...foam board and still be a problem? Hoping to just be able to apply foam to regulate the concrete temps and prevent inside warmer air from touching the concret...

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

What is the best insulation Under 2" Cement flat Roof in NYC?

...rigid board insulation for a flat roof, and there are several to choose from. Probably one of the more common types of insulation used for flat roofs is rigid p...

Posted by Rafael Mor March 29, 2019, 5:19 a.m. Roof assemblies - new construction 1 Responses

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

...foam boards will act as a vapor barrier and the thermal barrier. For an air seal, you may want to actually do that first, which could be a simple matter of appl...

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

Is polyiso board or styrofoam best for insulating when finishing a basement in CO?

...rigid insulation boards I have a few questions that will help us pin down the best way forward for you - How old is the home? Is there an exterior membrane ...

Posted by Evan B. Nov. 21, 2019, 8 p.m. Basements improvements 1 Responses

How do I insulate my half below grade basement?

...rigid insulation against the wall to keep the moisture out. You have probably seen a few of the following pages but I’ll add them in case, and for anyone else...

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

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

...boards for installation in my basement rim joists, should I be looking for faced or unfaced foam boards to install there--and which surface of the boards (faced...

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

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

...foam boards on the walls, sealing the floor. There is no moisture only when I put a piece of plastic down. Just want to warm it up a little and keep away any sm...

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

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

...boards) on the wall that is perpendicular to it. Some insulation companies have usggested we should remove the fibreglass insulation and replace it with spray f...

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

What is the best foam board insulation under drywall

...foam board insulation attached to the stud and seams taped. Then I would set 1/2" drywall on top of the foam and attached with long screws. Does this sound li...

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

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

...rigid foam for this specific purpose. As for your stairs, if there is a 2-inch gap, I would consider slipping a couple of 1.5” foam boards behind it if possible...

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

What is the best way to insulate a 2x8 wall?

...foam or 2 layers of 4" foam board not sure which kind would be best ......or spray foam and fill the rest with rock wool....it would be nice to talk to someone ...

Posted by Michael Sweglar July 8, 2020, 10:43 a.m. Wall assemblies - new construction 3 Responses

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

...foam the joist area while using XPS ridgid boards for the wall and floor. ( Top of slab) Whats the best approach. Thank you We would advice against spray ...

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