Rigid foam / Discussions

What is the best way to do exterior foundation styrofoam finishing?

...rigid EPS foam panels , and to finish it I attached a diamond lath to the foam with roofing nails to hold the parging, and did three coats. Its close to 20 year...

Posted by Castor River Farm Jan. 31, 2021, 12:56 p.m. New foundations and slab-on-grade 1 Responses

Is it OK to put 1 inch of EPS under vinyl siding with no wall insulation?

We have a cabin in the Bershires of Massachusetts ceilings and floor have been insulated, dense pack celluose in ceilings 4 in Amivic graphite EPS under floors...

Posted by Roger Smith Nov. 12, 2019, 6:34 a.m. Wall assemblies - renovation 7 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 9 Responses

For home renovation, is it better to install insulation on the inside or outside?

...foam, you could fill exterior cavities with batt insulation, dense packed cellulose, you could also add rigid foam panels, Rockwool panels etc, there are many m...

Posted by Neil Richardson Jan. 29, 2019, 4:09 p.m. Wall assemblies - renovation 1 Responses

How you vent a metal roof?

...rigid foam panels, followed by the drainage plane membrane? If using the Silverboard SB-35 foam insulation would be equally effective, would it be better to u...

Posted by Kim jarrett July 12, 2019, 12:15 p.m. Roof coverings 3 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 the basement of an old house?

...foam acts pretty much as a type II residential vapor barrier, but I would put the vapor barrier right against the foam and do the poly on top. And as for fini...

Posted by Bryan Squirrell Jan. 14, 2020, 7:59 p.m. Basements improvements 1 Responses

What is the best way to insulate a Multi-material wall?

...rigid rock wool panel to let moisture pass through? Read more here – Rigid insulation panels for exterior walls – how to choose the right one And I just wan...

Posted by Steve J Sept. 29, 2020, 10:15 a.m. Wall assemblies - renovation 7 Responses

How can I get rid of moisture between the vapor barrier and the insulation in a basement?

...foam insulation fixes this I'll do it but my fear is that I won't know if it works as we were told that if we do spray foam, then we have to cover it up with sh...

Posted by David Mitchell Aug. 14, 2018, 6:32 p.m. Basements improvements 45 Responses

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

...rigid board to close it off and limit rodent. I m in Quebec Canada so winters are cold. The walls are aluminium, i though I could insulate them with 1.5 " rig...

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

How do you fix moisture problems in basement?

...foam can get under and behind. That way your wood is prefectly protected. As for the spray foam, my other suggestion would be to choose a spray foam with more c...

Posted by John rodrigues Nov. 27, 2020, 8:50 a.m. Basements improvements 3 Responses

What do you think of insulated T Studs in Canada?

...foam. However, if the company that makes these insulated wood studs is building them in partnership with spray foam manufacturers that have changed to safer b...

Posted by Lee Watt June 3, 2019, 10:57 a.m. Wall assemblies - new construction 1 Responses

What is the best exterior insulation to put over existing double brick?

...Foam insulation will act as a vapor barrier - less so with just one inch since the permeability of foam goes down the thicker it is - but we would point you tow...

Posted by Andrew T July 19, 2021, 8:19 p.m. Wall assemblies - renovation 1 Responses

Should you put insulation on the outside of a cinder block wall in a desert?

...foam board then tar board chicken wire then stuco then paint with elastromeric/ sand mix, all to keep out heat. Styrofoam or no Styrofoam is the question. is it...

Posted by Michael Apodaca March 9, 2020, 3:10 p.m. Wall assemblies - renovation 1 Responses