Slab floor insulation / Discussions

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

...floor. I have several questions about the merits of each option, and would appreciate advice. 1. Cost - I know a slab is cheaper but having a basement that we...

Posted by Shaun B April 2, 2019, 6:35 a.m. Slab on Grade 3 Responses

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

...slab on grade foundation for our new cabin in Montana and I've decided to sit it on a 4" EPS foam insulation so the slab will retain some passive solar heat fro...

Posted by Grady 22 Aug. 17, 2019, 12:19 p.m. Air and vapour barriers 3 Responses

What is your opinion about building a garage on posts (screw piles)?

...slab floor (a raft-slab is also an option for softer soils) . The disadvantages of screw pile construction: A floor raised on screw piles leaves an addition...

Posted by Les P Dec. 11, 2017, 2:21 p.m. Foundations and Basements 1 Responses

How do you insulate a cottage crawlspace and install radiant floor heat?

...floor) or you could even drop it down on a radiant heated slab on grade and ditch the existing floor. That may be the most sensible option if you really want ra...

Posted by Todd hall June 28, 2020, 8:36 a.m. Crawl spaces 1 Responses

Do you have recommendations for radon sealing basement concrete & installing new flooring?

...floors there is an opportunity to futher seal the basement concrete floor against radon (and fill any cracks) prior to laying new flooring. The current slab I d...

Posted by M N Sept. 1, 2020, 2:20 p.m. Basements improvements 1 Responses

Which radiant floor heat is best?

...floor, electric mat radiant floor, or liquid glycol hydronic radiant floor. What matters most is the amount of insulation below the floor and the fuel source, w...

Posted by tony wolff Dec. 25, 2020, 1:22 p.m. Delivery: radiant, forced-air and decentralized 3 Responses

Can you jack up a cottage and build a slab on grade underneath it?

...insulation. The company that provides engineered raft slab on grade kits with air heated floors is Legalett , the serve most of North America and certainly Queb...

Posted by William Rae June 6, 2021, 12:23 p.m. Slab on Grade 3 Responses

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

...floor for future infloor heating (no system on the tubes yet). Existing heat is electric baseboard and a wood stove centrally located in basement. Electric hot ...

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

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

...insulation, but there you go. You can read more about it here - The difference between Polyiso, EPS & XPS Foam Insulation & Styrofoam It's still a great ins...

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

Can you help me decide between a foundation, slab on grade and crawlspace?

...Slab Foundations Better - which is Better for Cost and Durability? The downside of a slab is that all your plumbing is embedded in concrete so it’s not conduc...

Posted by David Davenport Nov. 26, 2018, 12:57 a.m. New foundations and 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 are the foundation options for a prefab house?

...insulation. The level of insulation under a slab would be determined by what is best for your climate, so however much you need to put in order to prevent frost...

Posted by Richard Bowie Nov. 20, 2020, 3:40 p.m. Foundations and Basements 2 Responses

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

...slab floor. You say you are considering a slab on grade foundation form kit, what sort of product are you looking at? Some are for monolithic slabs and some a...

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

Can you help with passive solar greenhouse exterior wall details?

...insulation type to create a thermal break / if that rigid insulation should be breathable. Trying to avoid moisture condensing inside the walls. We live in NW...

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

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 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

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