Suspended floors are where the floorboards rest over joists. They are likely to lose more heat as they are, in effect, suspended above a void. The easiest and least disruptive way to insulate ...
Therefore, install rigid foam across the bottom of the floor joists –in this case the thicker the better – then fill the 2×10 joist cavity with insulation, followed by a vapour barrier plastic over ...
New flooring will require a subfloor and possibly floor joists ... temperature in your newly finished basement. You can choose from several types of insulation, each with its own advantages.