Q: We have a frame house with a stucco exterior. Part of it is over a crawl space about 3 feet high. The house is bolted to the foundation and the exterior stucco covers the walls down to the ground.

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 ...