Rigid foam / Discussions

Is a vapor barrier necessary under a concrete slab with foam insulation and if so, where does go?

...foam - with the added benefit of making sure that at least 2" of foam has zero possibility of getting moisture back in once the concrete slab has dried out beca...

Posted by Grady 22 Aug. 17, 2019, 12:19 p.m. Air and vapour barriers 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

How would I rectifiy problem of foundation wall cracks with finished basement?

...foam rigid insulation panels, read more here . On top of that you could apply a cement board that can be parged or left as is. Let me know if any of those optio...

Posted by Terry P July 22, 2020, 7:07 p.m. Basements improvements 3 Responses

What is the best way to insulate a home from the outside?

...foam could end up doing. [Another important side note – the rigid boards with foil on both sides are likely polyisocyanurate insulation, that is not the best ...

Posted by Sylvie Gagnon Dec. 12, 2017, 11:58 a.m. Wall assemblies - renovation 1 Responses

Why insulate the walls rather than the floor joists in a crawlspace?

...rigid foam sheets down on top of the poly that's great. Great if you can still walk on it carefully and not crack it due to uneven ground. As long as the spac...

Posted by Ron Monk June 2, 2021, 9:31 p.m. Crawl spaces 3 Responses

Can you add external insulation to a brick home?

...rigid insulation , read more here – The difference between Polyiso, EPS & XPS Foam Insulation & Styrofoam Rockwool isn’t harmed by moisture and it lets mois...

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

Which is the best basement insulation?

...rigid foam, read more here – Choosing the right Rigid Insulation Panels And yes, I would say running the Rigid insulation from the bottom of the concrete an...

Posted by Alex Kesheshian April 23, 2020, 12:29 a.m. Basements 1 Responses

What is the best way to install slab on grade insulation?

...rigid insulation between 2x3 every 12 inches and cut down on the amount of insulation under the slab? Also, how do feel about using this 1 1/2 inch space to run...

Posted by paul fowler Aug. 26, 2021, 8:29 p.m. Slab on Grade 3 Responses

Are mice droppings and urine toxic?

...rigid foam boards or Rockwool would be a better alternative. Both are more suitable for potentially humid environments, and Rockwool in particular is made with ...

Posted by JT Nov. 14, 2017, 4:49 p.m. Pest control 1 Responses

How should I insulate basement Walls in climate zone 5?

...foam on them so any warmer air from finished basement would permiate through mineral wool to the wall but air space would or should allow for dry out no? Thou...

Posted by Chad Johnson March 25, 2019, 8:33 p.m. Basements improvements 1 Responses

How do you install radiant floor heating in an old building?

...rigid foam out side, insulated the wall cavities this cut our heating costs by 80%. About 2 years later we redid all of the ceilings in the house while doing th...

Posted by Rob Doda March 19, 2020, 3:21 p.m. Delivery: radiant, forced-air and decentralized 2 Responses

Which insulation do I use for interior walls of a framed in bunker?

...rigid foam etc. Here is our page on Choosing the right insulation , that will help you understand where each insulation works best no matter what the structure ...

Posted by Dale Klubertanz March 23, 2021, 10:38 a.m. Insulation and soundproofing 1 Responses

Is insulating an existing home from the outside a good solution?

...rigid foam panels will, which can trap moisture inside walls and lead to rot. Water vapor moves through mineral wool easily, and it isn’t harmed by moisture if ...

Posted by Cate Prichard June 26, 2021, 3:27 p.m. Wall assemblies - renovation 1 Responses

Will spray foam on basement walls prevent condensation?

...rigid foam insulation behind the stud wall? If not, is there anything there like a tar paper or house wrap? Let me know what’s back there and if the wall assemb...

Posted by Michael Scott April 12, 2021, 9:17 p.m. Basements improvements 3 Responses

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

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

Posted by Scott Muller April 18, 2019, 2:19 p.m. Wall assemblies - renovation 6 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 you insulate a cathedral ceiling?

...foam insulation. My walls are double 2x4 stud walls 12 inches deep and will have 2-3 inches of closed cell spray foam insulation to create a air and vapour barr...

Posted by Raoul Lions Oct. 19, 2019, 8:07 a.m. Roof assemblies - new construction 1 Responses