Rigid foam / Discussions

How should I install XPS insulation in a basement?

All, I have what I think is an unusual problem and I’d like suggestions for the best way to address it. I have a below-grade “cinder block” basement wall tha...

Posted by Ken Hunold Dec. 27, 2020, 7:22 p.m. Basements improvements 0 Responses

What is the perfect wall assembly?

...rigid insulation, there are ways that employ more expensive materials, but save a lot of time so it sort of comes out in the wash we figure after having done it...

Posted by Paul Drouin Sept. 17, 2020, 6:29 a.m. Wall assemblies - new construction 1 Responses

Can you Insulate a cinder block basement foundation with Rockwool?

...rigid foam insulation boards and seal the joints (see below). That would offer you a possible termite resistant layer, then airtightness and vapour protection, ...

Posted by Victor B June 19, 2019, 11:41 p.m. Basements improvements 6 Responses

How do you fix radon and water infiltration in a dry stone foundation?

...foam, it will still insulate, so the risk of freezing is still there. Here is our page on choosing rigid insulation boards , you can see some options there and ...

Posted by john flannery July 14, 2020, 4:24 p.m. Foundation and basement improvements 5 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

Should I bother testing for radon in a gutted and uninsulated house?

...rigid foam, I think that’s a great idea using reclaimed EPS foam panels. For the radon tube, a 12 x 12 x 12 opening to draw air from works as an 'active' stack ...

Posted by Luba Sharapan March 27, 2021, 12:04 p.m. Radon in Homes - Mitigation 3 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

How do you seal up an old fireplace chimney?

...rigid insulation (rockwool or expanded polystyrene) and half inch-thick plywood, which can then be covered to match the rest of the house. Installing wood sto...

Posted by Gord Nov. 2, 2017, 10:06 a.m. Wood stove and biomass heat 3 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 34 Responses