Helpful? 0

Monolithic slab in a cold climate

I've been talking to an excavator who says that he has done quite a few monolithic slabs up here in Vermont, including one for his own home. I'm wondering if anyone else has used a monolithic slab in a cold climate and if so, how did they do it? I'm thinking that 4" of foam insulation under the slab and another 4" around the slab would work, but I wonder how far out it should go. I also wonder about what kind of vertical insulation to use around the slab perimeter. Any advice?

Asked by William Ritke-Jones
Posted Thu, 04/05/2012 - 17:58
Edited Fri, 04/06/2012 - 06:22


7 Answers

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Helpful? 1

Yes, you can install a frost-protected shallow foundation in a cold climate.

Here's a link to an article with more information: Frost-Protected Shallow Foundations.

Answered by Martin Holladay, GBA Advisor
Posted Fri, 04/06/2012 - 07:34

Helpful? 0


Answered by William Ritke-Jones
Posted Fri, 04/06/2012 - 11:08

Helpful? 0

You can also go to and read their information on FPSF's. Do a search of "frost protected shallow foundations."

Answered by John Klingel
Posted Sat, 04/07/2012 - 02:22

Helpful? 0

Alan Gibson wrote a good piece on his techniques in the April 2010 JLC.

Answered by Dan Kolbert
Posted Sat, 04/07/2012 - 17:56

Helpful? 0

thanks for the resources!

Answered by William Ritke-Jones
Posted Mon, 04/09/2012 - 11:13

Helpful? 0

Frost-proctected shallow foundations are pretty much standard when building a house here in sweden. Here is an example of a type of foundation called supergrund: this on have a U value of 0.11 w/mk2 down to as low as 0.07 w/mk2.

Answered by tommy hakomaki
Posted Mon, 04/16/2012 - 11:20

Helpful? 0

Tommy H: Very nice. For those of us wanting an edge beam, these would work real well. Does anyone know if these are available in the States? At one time, a builder here was tinkering w/ the idea of having these made here, but then changed his slab design.

Answered by John Klingel
Posted Mon, 04/16/2012 - 14:42

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