Insulated floor on top of concrete slab
I am considering building a slab-on-grade, or slab with short perimeter footers, superinsulated house in a cold climate. Most slab insulation schemes I’ve seen put foam insulation under the slab, often with fancy insulation schemes at the slab edge. I very much dislike having a hard, cold concrete floor (and, yes, even a 60*F concrete floor is cold to bare feet). Is there a simple cheap way to make an un-insulated slab with all the insulation placed on top of the slab, then a plywood sub-floor placed on top of the foam? Or maybe 1x6 “floor joists” set directly on the concrete, with insulation (foam, fiberglass, cellulose?) between the joist? Any other ideas?
Posted Jan 17, 2013 9:38 PM ET
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