XPS / Discussions

Can I purchase XPS made with HFOs?

...XPS insulation have switched blowing agents yet. So as it stands, any XPS rigid insulation board you purchase will still have an impact several hundred times wo...

Posted by Kate Noblio Dec. 14, 2019, 12:35 p.m. Insulation and soundproofing 3 Responses

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

...XPS Foam Insulation & Styrofoam We always choose (and recommend) EPS over XPS due to the fact that XPS has much higher greenhouse gas emissions than EPS. So i...

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

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

...XPS ? Polyiso starts to fall off in R value around 5-10C , but it's not a catastrophic failure, and given your use of Celsius and ‘West Coast’, I’m thinking you...

Posted by Iain Matheson Jan. 28, 2020, 10:38 p.m. Wall assemblies - renovation 1 Responses

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

...XPS ridgid boards for the wall and floor. ( Top of slab) Whats the best approach. Thank you We advise against spray foaming any rim joists that are wet se...

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

Do I need to insulate under the footings of a frost protected shallow foundation?

Hello, I’m designing a FPSF in Southern Vermont (AFI 2300). I want to fully insulate the radiant slab by including 4″ XPS under the footings but this seems t...

Posted by Jon Piana April 15, 2019, 8:45 a.m. Slab on Grade 1 Responses

How do I insulate my half below grade basement?

...XPS with 4" studs and roxul insulation to give around r24 (local code). This is expensive and I'm not 100% on board because the basement is half above grade. ...

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

Can Rockwool be installed over Type II EPS?

...XPS 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 ...

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

How much insulation should I install underneath my concrete slab in my basement?

...XPS below a slab, the added R value of XPS just isn’t worth the added cost – meaning EPS is cheaper per R value, and XPS manufacturing has very high green house...

Posted by Scott Antonation Sept. 27, 2019, 1:06 a.m. Slab on Grade 3 Responses

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

...XPS 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 membr...

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

What type of Insulation can I use on the exterior of my home?

...XPS Foam Insulation & Styrofoam There are rigid insulation boards that will act as the insulation only, insulation and air barrier only, or all in one - insul...

Posted by Scott Muller April 18, 2019, 2:19 p.m. Wall assemblies - renovation 6 Responses

Can you add external insulation to a brick home?

...XPS Foam Insulation & Styrofoam Rockwool isn’t harmed by moisture and it lets moisture move right through it, which is a very good thing to use for an exterio...

Posted by Rachel Kaiser April 2, 2020, 9:11 a.m. Wall assemblies - renovation 1 Responses

Can you help with passive solar greenhouse exterior wall details?

...XPS will stop moisture, Rockwool will let it pass right through, read more here - Choosing the right rigid insulation panels

Posted by Rick Carter Aug. 11, 2020, 8:06 a.m. Greenhouses and Sunrooms / Solariums 1 Responses

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

...XPS Foam Insulation & Styrofoam It's still a great insulation, just not quite up to the R6.5 + levels that were originally claimed. So the more 'energy savvy'...

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

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

Eight years after our house was built, we noticed that the MDF baseboards in our finished basement became discoloured and swollen from potential moisture. We r...

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

What is the best way to insulate my basement?

I have an unfinished walkout basement with 3 sides at or below grade. The two sides of the house have poured concrete step foundation down toward the rear with...

Posted by Chris Rogers Oct. 27, 2019, 11:23 a.m. Foundation and basement improvements 1 Responses

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

...XPS foam has higher greenhouse gas emissions , but it works better for air and vapour protection so in this particular case I would probably go pick up a few sh...

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?

I have been reading so much on insulation ....and out of the foam boards I think eps might be the best to use, but not sure if the foil face would be good, may...

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

Can you install foam boards directly against basement walls?

...XPS insulation boards (which are a vapor barrier) you would be ensuring that the wall cannot dry to the interior either, so what you would have is an ideal mold...

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