Raft slab / Discussions

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

...slab, but the one lead I can give you would be Legalett that provides raft slabs across all North Americ a. They deliver all over North America, and their kits ...

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

Can you elevate a slab on grade foundation?

...raft slab from Legalett . We chose that partly for performance, but also because the house is seated on expansive soils, so a frost wall and footing would have ...

Posted by Raoul Lions July 27, 2019, 2:47 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?

...slab form kit - (see details here)

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

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

I'm looking to buy a house build on a slab-on-grade . What should I be looking for in terms of insulation? Thanks, Terry Where is the house, and do you know ho...

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

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

...slab section, ideally with your hot air radiant heat system, would be about 1000 square feet. There is only one manufacturer of slab on grade form kits with air...

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

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

...slab slab on grade foundation to extract winter heat We generally recommend people check with an engineer for any such matters, but that shouldn't be a problem ...

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

Do I need to insulate under the footings of a frost protected shallow foundation?

...slab to ensure durability: The AFI (air freeze index), how much insulation encases the slab, the soil conditions, and whether or not the slab will be heated. Th...

Posted by Jon Piana April 15, 2019, 8:45 a.m. Slab on Grade 1 Responses

Does insulating a slab on grade make the building less stable?

...slab. What do you think? A Slab on Grade needs to be built correctly, but no, Insulation under a slab floor will not make it less stable. To me that sounds like...

Posted by Nicolas Jalbert May 28, 2018, 4:56 p.m. Slab on Grade 1 Responses

What is the best way to build a slab on grade on bedrock?

...slab on grade form kit. You have other option to raft construction.check iso-slab is structural insulated slab kit,cheaper and easiest option to raft kit.

Posted by peter owen Oct. 31, 2019, 3:33 p.m. Slab on Grade 1 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

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

Why do you say building on a slab is more ecological than starting with a basement?

...slab floor, offering a reliable very comfortable heat source. Cost savings: A slab foundation can be a cheaper way to build because a slab requires less wor...

Posted by Geri P Dec. 11, 2017, 11:45 a.m. Foundations and Basements 1 Responses

Are slab on grade foundations cheaper than a basement?

...slab on grade over a basement almost every time, and in most cases yes, a slab is cheaper in our experience. But that is partly due to the way we build, where w...

Posted by Jason Nov. 21, 2019, 4:12 p.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 is an alternative to a basement, PWF or concrete, so I'm not sure where you're being advised to mix a PWF and a slab on grade, or how to even do t...

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 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

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 Should You Look For When Buying a Slab on Grade Home?

...Slab on Grade or Foundation and Basement; Which is Best? Reading that page will give you a better idea of what to look for in a slab. And the first question i...

Posted by Mike Molloy Nov. 6, 2019, 7:29 p.m. Slab on Grade 1 Responses

Are there any updates on the progress of the second demonstration house?

...slab on grade kit here as well as the radiant tubing. Watch for more on the Wakefield House coming soon! Best regards, Mike Thanks for the reply. I noticed this...

Posted by dean c April 30, 2019, 7:58 p.m. Solar thermal collectors 2 Responses