Sammy writes from Edmonton, Alberta: "What you recommend to insulate a concrete basement floor? Do I need vapour barrier, 2x2's and a subfloor with foam insulation? What thickness of insulation should be used?"

Answer: We have no detail for foam insulation above a concrete floor. In most cases were we have seen this done the builder or contractor installed a floating floor where FOAMULAR® insulation sits on the concrete and a subfloor was placed directly over it. In Canada we have also seen successful applications where CodeBord™ insulation panels (available in Canada) were installed over the existing concrete slab, then 1" x 4" sleepers (furring strips in U.S.-speak) were installed 16" on center, then 3/4" plywood over the sleepers. Either way you get a nice PINK solution.