How to Insulate Existing Walls – Without Removing Drywall
Step-by-step techniques that insulation pros use for blowing fiberglass or cellulose insulation into existing wall cavities Insulation in house exterior walls is one of the primary defenses against heat and energy loss. Unfortunately, however, builders didn’t insulate the walls of most homes built before the 1980s. So if your house was built before insulating walls […]