Q: My wife and I recently bought a small ranch that had an old, inefficient furnace in the crawl space. During the fall, we disconnected the old furnace and decided to install a new one in our attic ...

Rigid foam boards are better suited for a finished loft or attic space than fiberglass insulation, which is best reserved for times you can see between the joists. When cold weather rolls in, take a ...

Q: I have a crawlspace under our home where the north and east walls are insulated on the inside with 3/4-inch blue foam board. Do I need to have a fire-resistant or -retardant covering over it by ...

Q: My furnace is in my attic, and I recently had insulation blown in. Ever since, the air-combustion vent on my furnace is sweating and causes the ceiling to get wet. How do I stop the condensation?

Q: I have a crawlspace under my house. Last fall, I put insulation between the joists of one room to try to warm the floor somewhat. I put roll insulation between joists and nailed 4-by-8 ½-inch foam ...

Q. My home has a crawl space. About 15 years ago it was sprayed twice for termites. Apparently, I have become sensitive to this substance as I have been noticing an odor wafting up from the cool air ...

Q: Maybe you can help settle a disagreement between me and my wife. We were looking at model homes and I noticed one of the models we liked had the furnace in the garage and another model had the ...