Lightweight insulating (perlite) concrete footing
I'm considering perlite concrete for my basement's subslab insulation. The sub slab will need to be rather thick to get the level of insulation. If I use a 6 to 1 volume of perlite to cement and a 10 inch sub slab I'l get about r15 and have a compressive strength of 125 psi+. Can I simply enlarge the sub slab and pour the walls on it's edge, in effect making the sub slab serve as footings for the wall?
The sub slab will be on top of 6inches of coarse rock covered by poly.
Posted Oct 10, 2012 1:34 PM ET
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