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

4" air pipe quality for air heated floor?

...Slab on Grade for LEED, Passive, ZNE Legalett monitors the process of installion for their raft slab kits, which includes a pre-pour inspection for warranty, ...

Posted by Israel Sword March 28, 2020, 6:26 a.m. Slab on Grade 1 Responses

Should I build a basement or slab on grade?

...slab on grade mainly because of familiarity. Most don’t know how to build a slab on grade so they tend to steer you way from them simply for lack of knowledge a...

Posted by robert baker March 27, 2020, 6:54 p.m. New foundations and 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. 0 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

How do you choose between a basement or slab on grade?

...slab on grade is better and have a 2 storey house instead? Is the energy loss from the 2nd storey less than a basement? And also, what about using the slab on g...

Posted by Lisa Delmas May 21, 2020, 8:59 p.m. Foundation choices 0 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

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

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

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

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

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

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

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

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 infloor radiant heating would you use in a corewood home design?

...slab-on-grade floor The air heated floor may be an option worth exploring, it is provided by a company that designs and manufactures engineered raft slabs (fr...

Posted by John Yoho Feb. 6, 2020, 10:59 p.m. Wall assemblies - new construction 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

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