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 - 18:58
Edited Fri, 04/06/2012 - 07:22


7 Answers

Select your preferred way to display the comments and click "Save settings" to activate your changes.
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 - 08:34

Helpful? 0


Answered by William Ritke-Jones
Posted Fri, 04/06/2012 - 12:08

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 - 03:22

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 - 18:56

Helpful? 0

thanks for the resources!

Answered by William Ritke-Jones
Posted Mon, 04/09/2012 - 12:13

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 - 12:20

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 - 15:42

Other Questions in Green building techniques

Crawl Space With Dirt Floor and Spray Foam

In Energy efficiency and durability | Asked by Paul Staffieri | Oct 25, 14

How do deviations in average winter temperature affect energy consumption?

In Energy efficiency and durability | Asked by norm farwell | Oct 24, 14

Best Anabolic Cycle Help!

In General questions | Asked by Irving Hollenbeck | Oct 25, 14

Oil filled heaters

In Energy efficiency and durability | Asked by Tim Young | Oct 25, 14

ERV, HRV, Dehumidifier retro fit before finishing basement

In Mechanicals | Asked by Wendy D | Oct 25, 14
Register for a free account and join the conversation

Get a free account and join the conversation!
Become a GBA PRO!