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Structural Styrofoam Panels?

Posted: Wed Nov 28, 2018 11:11 pm
by Ked326
I'm looking at purchasing a house with a foundation made with Structural Styrofoam panels. I have found some information on them for main floors but not much as a foundation. Does anyone have any knowledge or experience with this product?
Thanks

Re: Structural Styrofoam Panels?

Posted: Thu Nov 29, 2018 1:58 am
by A. Spruce
I do not. I would recommend finding a few manufacturers and read through their websites.

Re: Structural Styrofoam Panels?

Posted: Thu Nov 29, 2018 6:57 am
by Shannon
ICF basements and foundations are built a lot here. They are kind of like hollow foam lego blocks and have been a really good alternative to the regular method of forming and pouring basements/foundations as they offer great R value immediately .

Re: Structural Styrofoam Panels?

Posted: Thu Nov 29, 2018 8:49 am
by Clarence
There are many manufactures of Structural Insulated wall panels.

OSB with EPS Core I don't think it can be used below grade. Some do not meet Seismic Code. Check the Structural Panel Assoc. for info. I have used 3 D foam reinforced panels below grade very strong product it was manufactured in Georgia by In-Steel. There is also a composite Panel System which can be used below grade. You will have to know what type system was used.

Re: Structural Styrofoam Panels?

Posted: Thu Nov 29, 2018 11:11 am
by Shannon
ohh I may have mis understood what product you have? I missed the words "structural panel" maybe you are talking about SIP's ? I have not seen those used below grade here at all ?

Re: Structural Styrofoam Panels?

Posted: Thu Nov 29, 2018 12:13 pm
by Shannon
So I did a little more digging and SIPs are indeed built to be used below ground like for a basement . They will have PT plywood on the outsides instead of standard plywood or OSB. It would seem they are much like building a PT wood basement and take extra care during backfilling and also being sure the waterproofing , drainage and soil conditions are correct. There is a fair amount of info here both good and bad so have a look.
https://www.google.com/search?client=sa ... 8&oe=UTF-8
Also this guy has some good info on his site ,it is a little dated however.
https://baileylineroad.com