For more information, go to Insulation Basics . Adding wall insulation Most older homes do not have wall insulation, but walls can be blown with insulation by a qualified insulation contractor. For more information, go to Insulating Walls . Sealing your home's air leaks Seal your home's air leaks with caulk, weatherstrip , or foam insulation to reduce infiltration . Installing a radiant barrier Consider installing a radiant barrier in your attic to cut down on summer heat gain.
Radiant barriers can reduce cooling costs when properly installed.
Ventilating your attic Good attic ventilation can eliminate most of the heat that gets into your attic before it can radiate or infiltrate down into your living area. Attics should have soffit vents and either continuous ridge vents or gable end vents. F. Proper attic ventilation also helps prevent moisture damage to insulation and building materials.