Here's another great tip from BobVila.com. How much insulation does your home need and where? It depends on your climate and the energy costs in your area. The basic principle is that you want to keep heat energy from doing what it does best: dissipating to colder areas. The best way is to trap a layer of air next to the heat source. In new framing, sprayed-on polyurethane foam, fiberglass or cellulose do a good job of providing this layer before the drywall goes up. If you re retrofitting your insulation, you can still spray in cellulose through holes cut from the interior or the exterior. To find out what insulation will work best in your home, you ll want to know the recommended insulation r-values in your area. R-value is the measure of a material s resistance to heat flow. The higher the value, the more effective it is. To see the recommended insulation r-values and cost estimates in your ZIP code, visit the Department of Energy s web site. Even a small draft can make your insulation less effective. Seal any gaps around electrical outlets, ducts, windows and doors with foam sealants, caulking or weatherstripping. The most important area to insulate is your attic. Make sure you ve got at least the attic floor insulated with blown-in or batt insulation to your area s recommended r-value, and consider insulating the roof and attic walls as well. This can provide a fully insulated buffer zone to keep heat where you want it and keep the lid on your energy costs. Find out more at BobVila.com: The ultimate home improvement web site! BobVila.com 2008

Bob joins Buddy Loxley from MAP Insulation to talk installation in the master bedroom. The crew is using R-15 fiberglass insulation from Owens Corning in the home's exterior walls to meet Energy Star standards. The high-density batt insulation is the highest R-value possible for two-by-four cavities. To achieve maximum R-value, it's important not to compress the insulation. It must remain fluffy in order to trap air and prevent infiltration. The crew will install an R-38 insulation in the ceiling. Owens Corning QuietZone interior wall insulation, a sound attenuation material, is placed in the interior walls to reduce noise transfer from room to room.

George Saylor from Owens Corning is on location in this episode to discuss the insulation products that will be used in the Waterfront Warehouse Rehab project. Before work begins, Bob notes the importance of wearing protective gear including gloves, hat, long sleeve shirt, pants, particle mask, and eye protection when working with fiberglass insualtion. Owens Corning has provided a fiberglass insulation that delivers an insulation value of R15 in only three and half inches of thickness. The material's higher density creates smaller more uniform cells of trapped air to provide a greater degree of insulation in a tighter space, making it more efficient. Saylor also explains how to insulate around outlets and other building infrastructure. On the exterior walls, extruded polystyrene insulation is being installed between the studs and wallboard to prevent thermal transfer from the metal studs to the building's interior. The additional material will create a R20 wall. In the living spaces, interior walls are filled with fiberglass batt insulation to prevent the transfer of sound from room to room.