Slab foundation / Discussions

Can you elevate a slab on grade foundation?

...foundation? Or if it's even possible? I'd like the insulated slab on grade foundation idea but just wondering if elevating it 3ft. is possible? or is going with...

Posted by Raoul Lions July 27, 2019, 2:47 p.m. Slab on Grade 3 Responses

Can you install tubing under a slab on grade foundation to extract heat in winter?

...slab on grade prefab form foundation kit to extract winter heat? We generally recommend people check with an engineer for any such matters, but that shouldn't b...

Posted by Jennifer Cole Aug. 28, 2019, 11:34 a.m. Slab on Grade 1 Responses

What is the best way to build a slab foundation on a slope?

...slab to the one below. Thanks, Keri There are many ways to build a slab on grade foundation on sloped building lots , but doing three separate slabs isn’t nec...

Posted by keri gelenian Nov. 23, 2020, 6:32 p.m. Foundation choices 1 Responses

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

...slab on grade and monolithic foundation styrofoam forms - is there a difference or are they the same thing? A slab on grade literally means a slab of concrete o...

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

Can you replace an old slab foundation with an air heated slab?

...slab on grade house and pour a new slab under it, unless of course I’m missing something here. The raft slab insulated slab on grade kit with the air heated rad...

Posted by Mike Molloy Nov. 7, 2019, 8:44 p.m. Slab on Grade 1 Responses

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

...foundation (PWF) would be an alternative to a concrete foundation , and a poor one at that. The end result of mixing wood and moisture will always be rot. So bu...

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

What is better for a small slab on grade foundation: water (glycol) or electrical radiant heat?

On a small footprint foundation (26 x 19 feet) what is better and/or more economical for radiant heat? I am hesitating between water with a micro boiler or ele...

Posted by Mark Dixon July 7, 2020, 2:56 p.m. Delivery: radiant, forced-air and decentralized 3 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 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 install a slab on grade foundation in the Fall and leave it over winter?

...foundation in the fall and then start work back up again in the spring. This may be okay when installing a full basement foundation, but can a slab foundation...

Posted by Matthew Gioia Sept. 21, 2020, 9:15 p.m. Slab on Grade 1 Responses

Slab on Grade for House in Grand Rapids MI - Can I get Prefab form kits & Assistance easily?

...slab on grade foundation is best suited. do you work here or can you supply a kit and assistance to a local builder? The house will probably have a partial base...

Posted by Greg Hooks Nov. 20, 2019, 3:35 p.m. Slab on Grade 1 Responses

Can my shallow crawl space be converted to a slab foundation?

...slab foundation and how might I go about it? Yes, you can convert a crawl space into a slab on grade foundation , it just isn’t a particularly cheap process. Yo...

Posted by Sian O'Keefe Aug. 15, 2020, 12:52 p.m. Slab on Grade 1 Responses

Where would I go for guidance on structural design of footings that sit on top of high-density insulation?

...foundations are out of our competence range which is why on the home we're currently building on poor expansive clay soils in Wakefield, QC, we entrusted Legale...

Posted by Douglas Bennion July 31, 2019, 4:34 p.m. Foundations and Basements 1 Responses

How do you finish the exterior of slab on grade?

...slab on grade foundation insulated with Rockwool What we did worked, though in hindsight given the compressibility of the Roxul (certainly at 8 inches thick) ...

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

Do you have an engineer directory for slab on grade designers?

...slab on grade (monolithic) foundation as most municipalities would require? We don't currently have a directory of professionals to offer sorry, But where are y...

Posted by Paul Giusto Dec. 30, 2019, 8:12 a.m. Slab on Grade 1 Responses

What is the best method of building a slab on grade?

...slab on grade as a good starting place– Slab on Grade vs Foundation & Crawlspace or Basement? In there you can see our slab on grade installation video of o...

Posted by Jay Law April 19, 2021, 3:09 p.m. Slab on Grade 1 Responses

Protection from Insects for Legalett Geo-passive super insulated slab on grade?

...slab is the possibility of insects, especially termites and/or carpenter ants infesting the EPS. Is that a danger? Among the many possible ways to protect again...

Posted by James Burns April 30, 2020, 11:11 a.m. Slab on Grade 0 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