FPSF / Discussions

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 around porch.  So aesthetically I think it looks better than being on ground level. As well because of snow accumulation.  My question is what would be the best wa...

Posted by Raoul Lions July 27, 2019 Slab on Grade 4 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 think I really understand the question so I would need more information. A pressure-treated wood foundation (PWF) would be an alternative to a concrete foundati...

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

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 principle of relying on heat transferring through the footing to stabilize the ground temp.  My next thought was to use the FPSF design guidance for an unheated...

Posted by Jon Piana April 15, 2019 Slab on Grade 1 response

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 assistance to a local builder? The house will probably have a partial basement but the slab section, ideally with your hot air radiant heat system, would be about 1000 s...

Posted by Greg Hooks Nov. 20, 2019 Slab on Grade 1 response