Floor over insulated concrete slab, Zone 3
I am trying to decide what to do with our ground level floors – we have let the new slab with 1 inch XPS underneath dry out adequately (thanks to advice gained here) , and our floor guy is suggesting oak over plywood and 10mm plastic.
We are sensitive to eating up the room height, but are thinking of putting rigid foam under the plywood. Does XPS come in 1/2 inch or 3/4 inch? Is a floating floor with insulation possible?
Might the insulation under the concrete be adequate?
Thanks in advance,
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