Air is one of the best ... Mineral wool batts are about 25 percent more expensive than fiberglass. Shop Now Many builders ...

Insulating your attic walls is one of the best ways to get your home optimal ... Mixing types, like adding fiberglass batts over loose-fill insulation or blown-in cellulose, is also fine.

If the old fiberglass batts or cellulose insulation is ... by pests, it's best to remove it entirely before proceeding. This guarantees that the new blown-in attic insulation performs effectively ...

Choosing the best way to insulate your attic boils down to a few factors ... compare that to the R-3 per inch you'd normally get from batt. Admittedly, spray foam insulation is expensive.

How to Remove Blown-In Insulation Removing blown-in insulation requires a slightly different approach compared to batts. This type of insulation, often made of fiberglass or cellulose, is loose ...

be sure to check the attic for signs of a pest, or worse, a full-blown infestation.MediaProduction / Getty Images Carefully roll or lift fiberglass batt insulation, starting at one corner.