In most older homes and even in some newer ones, blowing extra insulation into your attic can help save you a lot of money on energy bills (some estimates go as high as 20 percent per year), as well ...

Q: We live in a 1925 Berkeley bungalow. The attic is insulated with blown-in cellulose and meets the current code for thickness. Also, the entire underside of the house is insulated with fiberglass.

Insulating a pitched roof or loft is one of the most cost-effective ways to improve your home's energy efficiency. Uninsulated homes lose around a quarter of their heat through the roof. Even if you ...