FPSF / Discussions

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

...FPSF in Southern Vermont (AFI 2300). I want to fully insulate the radiant slab by including 4″ XPS under the footings but this seems to conflict with the FPSF p...

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?

I am preparing to build a house in Grand Rapids MI and believe a slab on grade foundation is best suited. do you work here or can you supply a kit and assistan...

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

Can you elevate a slab on grade foundation?

I'm building a home up north in Parry Sound, Ontario next year. I'd like a slab foundation raised three feet above the ground level. I'd like to have a wrap ar...

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

We're soon building a 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...

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

How well do Legalett slab on grades work?

We are planning a build for June 2020 in Prince Edward County, Ontario where there is 1 ft of topsoil, 2 ft of clay and then bedrock. Structure planned is a bu...

Posted by Steve Sykes Aug. 18, 2019, 3:21 p.m. Slab on Grade 1 Responses

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

Allergic to chemically treated wood, CODE requires PWF on concreted slab before house can be built Where are you building where code says such a thing? I don't...

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