Insulation below slab floor / Discussions

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 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

What type of wood can be installed on a radiant floor?

...below. What is important, is to have sufficient insulation below the basement slab floor. The greater the temperature differential between the floor and the gro...

Posted by Colleen Blak Dec. 11, 2017, 1:59 p.m. Flooring and stairs 1 Responses

Can you elevate a slab on grade foundation?

...below is an image of a Passive House slab under construction with 14 inches of seamless insulation on the exterior and 12 inches below the slab. Note where the ...

Posted by Raoul Lions July 27, 2019, 2:47 p.m. Slab on Grade 1 Responses

Can a solar thermal air system be coupled to an HRV for heating incoming fresh air?

...below frost-depth, or below the slab or below the skirt insulation), so that incoming air takes advantage of ambient ground temperature. There are some concer...

Posted by Brian Billings March 21, 2019, 2:53 p.m. Solar thermal collectors 1 Responses

What is the best way to insulate rim joists with EPS and batts?

...slab to below subfloor. I have a 2-storey brick home (35 yrs old). My basement wall construction is poured concrete foundation, then a full-home perimeter cri...

Posted by Steve J July 18, 2019, 3:53 p.m. Basements improvements 1 Responses

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

...insulation below a concrete slab floor would pay for itself likely in a few years. Insulating a slab floor means will result in greater durability, it will pr...

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

Where do I start to build a small, affordable, low-maintenance house?

...Slab on Grade or Foundation and Basement; Which is Best? Slab-on-Grade Raft Foundation Insulation Detail, Prefab ICF Form Kits Slab-on-Grade Foundation Deta...

Posted by Ocean-Lynn Georgelin Oct. 22, 2019, 11:40 p.m. Concept and design 2 Responses

What are the factors I should consider for choosing between a slab on grade and basement?

...insulation skirt. Instead of digging down to build a footing and have your load bear below the frost line, you can just lay down a sheet of insulation and move ...

Posted by Shaun B April 2, 2019, 6:35 a.m. Slab on Grade 3 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 right amount of insulation for a house?

...floor built from a kit product that has continuous insulation underneath. There are times when insulation below the footings gets omitted, that would quickly be...

Posted by Ryan Gerbrandt Feb. 11, 2019, 9:57 a.m. Passive solar home design 4 Responses

What is the best type of radiant floor heating for a garage?

...insulation below the slab. Don’t go with the base requirements of Building Code, we would recommend at least 6 inches below a heated slab in most parts of Canad...

Posted by J.F. March 24, 2017, 11:14 a.m. Delivery: radiant, forced-air and decentralized 1 Responses

How do you finish the exterior of slab on grade?

...slab insulation has more insulation sitting on top, so there is no exposed 'top' as it were. But I'm thinking by 'top' you may mean the top vertical portion tha...

Posted by Dave Derouin Oct. 18, 2018, 1:45 p.m. Slab on Grade 1 Responses

What is the best way to Insulate the crawl space of an old home?

...insulation in the attic. I have started the insulation in the floor joist from the crawlspace. I would like to know the correct way to insulate my crawl space r...

Posted by Aj Jan. 21, 2020, 8:13 a.m. Crawl spaces 1 Responses

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

Can you help me choose between a slab on grade and pressure treated wood foundation?

...slab on grade, or how to even do that. A slab on grade floor consists of concrete and insulation (radiant heating tubes, mesh and rebar of course) but not wood....

Posted by Margot Simonot May 20, 2019, midnight Slab on Grade 1 Responses

What's the difference between a slab on grade and a monolithic foundation?

...slab on grade literally means a slab of concrete on grade (ground level), as opposed to ‘below grade’ like a basement. And a slab on grade can be built in a var...

Posted by Ronaldo Johnitas Dec. 10, 2019, 6:12 a.m. Slab on Grade 4 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