Slab floor insulation / Discussions

Can you use spray foam Insulation under a slab?

...slab with foam polyurethane. If not, why? When building a slab on grade, EPS rigid foam insulation is the most common choice of insulation, for performance and ...

Posted by Linda Martin April 6, 2020, 11:54 a.m. Slab on Grade 1 Responses

What thickness of insulation and concrete do you recommend in a floating slab?

...insulation and the concrete for the slab and radiant floor system? Thank you. If you install only 2 inches of insulation under a slab with radiant heat in a col...

Posted by Marc-Andre Roy April 21, 2021, 7:38 a.m. Slab on Grade 3 Responses

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

...floor so my question is. Would it make any sense to install rigid insulation between 2x3 every 12 inches and cut down on the amount of insulation under the slab...

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

Can you insulate an existing slab on grade floor?

...floor issue. Is it possible to insulate beneath an existing slab on grade floor? If so, how, and is it cost effective? A perimeter skirt insulation will help ...

Posted by Patrick Berkeley Dec. 31, 2020, 10:14 p.m. Foundation and basement improvements 5 Responses

Would you recommend Legalett over water radiant floor heat for a backyard studio in Toronto?

...slabs. Legalett Solar Air Heated Slab on Grade installation video Slab on Grade Prefabricated Insulation Form Kit Air heated floor Thickened-edge slab...

Posted by Christine Pountney May 2, 2019, 1:22 p.m. Delivery: radiant, forced-air and decentralized 1 Responses

What is the best way to insulate exterior walls of a mid-70's Pioneer Log home?

...insulation is an air barrier applied to the exterior then insulation then an exterior like painted wood or something engineered. Should we use a foam insulation...

Posted by Keith McDevitt Nov. 15, 2020, 12:01 p.m. Wall assemblies - renovation 0 Responses

What heating system to use in my new detached garage/shop?

...slab. But I want to have a radiant floor and I am not sure what to install. I can go with hydronic floor or electric. Hydronic is about 3300$ and the electric, ...

Posted by David Perreault Dec. 4, 2020, 10:23 a.m. Delivery: radiant, forced-air and decentralized 0 Responses

Is hydronic slab heat appropriate in a super insulated home?

...floors. How did you execute in floor heat on the Kenogami house and keep it from overheating? PS- I don't expect toasty warm floors, just not chilly floors. T...

Posted by Andrew Wright Feb. 3, 2021, 3:26 p.m. Delivery: radiant, forced-air and decentralized 1 Responses

What is the best way to insulate the ceiling of my crawl space?

...insulation with cardboard flex. The insulation is falling down and looks like I would say over half of the home. The floor is dirt. Do I try and replace the f...

Posted by Judy Mendel Feb. 17, 2020, 11:10 p.m. Crawl spaces 4 Responses

What is the best way to renovate a basement after a flood?

...floor for its resistance to future flooding. We had a company pour a new 2-3 inch slab on top of the existing slab over that half of the basement. The 2x4 stud ...

Posted by Wren Toombs June 18, 2018, 10:52 a.m. Foundation and basement improvements 2 Responses

What is the best exterior Wall and Roof Rigid Insulation for a barn renovation?

...Floor Heat ( haven't decided yet on heating source) Slab will have 4" of Rigid Insulation under the slab and extending 4' out from the edges. I believe I am loc...

Posted by Ron Busch June 27, 2020, 3:50 p.m. Wall assemblies - renovation 1 Responses

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

...insulation/15639#a6-2 " I want to use a professional company to spray foam the joist area while using XPS ridgid boards for the wall and floor. ( Top of slab)...

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

Basement reno - How do I effectively insulate my basement?

...Slab: DMX aiflow dimple mats +(3/4" EPS, needed?) +OSB +flooring of choice Answer: First on the floor EPS – yes it is a very good idea to insulate the floor...

Posted by Steve J Feb. 13, 2019, 10:25 p.m. Foundation and basement improvements 2 Responses

What is the optimal setup for mechanical systems for slab on grade?

...slab on grade home. I definitely want a hydronic in floor heat system, along with a heat pump. With the absence of central ductwork, where do I put the ERV? Wou...

Posted by Dave Nuttall July 6, 2019, 9:42 a.m. Mechanical systems 1 Responses

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

...floor is under the living room, the rest is crawl space with dirt floor or slab. The 10x14' cellar has heavy springtime water ingress where the dry stacked ston...

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

Can you create a passive wine cellar by insulating and air sealing a crawl space?

...floor is insulated and you keep it warm down there then you don’t need any insulation in the floor joists, but if you keep it cool then you would likely want in...

Posted by JC Wong April 2, 2021, 6:50 p.m. Crawl spaces 5 Responses

What should I look for if I want to buy a slab on grade house?

...slab-on-grade . What should I be looking for in terms of insulation? Thanks, Terry Where is the house, and do you know how old it is? Those two things would off...

Posted by terry northcott March 25, 2019, 11:02 a.m. Slab on Grade 1 Responses

Does slab on grade need to have in floor heating?

...floor heating? We will just be putting a Woodstove in and don't want in floor heating but I'm concerned with moisture from the slab and having flooring over the...

Posted by Lauren Panzani Nov. 13, 2020, 11:06 a.m. New foundations and slab-on-grade 1 Responses