Q. My 1908 house has a crawl space and a pine board floor, no subfloor. I get a chilly draft through the gaps between the boards. How can I fill those gaps? Would tarring the underside of the boards ...

Then they covered that with an open-cell foam board that’s ¾-inch thick. It seemed the smart thing to do is tear all this off, and I started to do just that, but then I thought to ask you before I go ...

Q: I just bought my first house and am about to remodel my basement. The previous owners of the house glued 2-inch-thick foam insulation to the poured concrete walls. It’s got an aluminum foil face on ...