If you’ve ever climbed up into your attic and wondered why it feels like the Sahara Desert in July—or Antarctica in January—there’s a good chance your insulation is either outdated or missing ...

Unlike blanket and foam board insulation, however, loose-fill is usually installed on the floor of the attic to stop heat from escaping from the rest of the home below, rather than in the roof joists.

Air is one of the best thermal insulators, and fiberglass insulation makes use of it. Manufactured from glass fibers, fiberglass is woven into loose cotton ... you have a damp attic you may ...