Q: Would you suggest installing insulation in basement ceiling even if the basement walls are insulated?

A: If the basement space is used as living space (and heated) then there is no need to insulate the ceiling if the walls are already insulated. It will be better to just install a thick pad under the carpet – and that will keep your feet warmer too! If the basement is not used as living space and is unheated then it makes good sense to insulate the ceiling so that you are not waseting your heat on your luggage.