Use fiberglass for sound attenuation in your interior partitions. It helps to deaden sounds and reduce household noises adding a lot of comfort to your home. It's especially effective around plumbing stacks and bathrooms as well as family rooms where teenagers congregate.

Bob recaps the work done so far in the nursery project at the home in Melrose, Massachusetts. The house has already been insulated for the tough New England winters and will now be insulated for sound control. Bob talks with Arline Bronzaft, an Environmental Psychologist with a PhD in child development, about the importance of raising a baby in a quiet environment. Bronzaft stresses the importance of a good night's sleep for an infant. With this in mind, Bob reviews a discussion he had with Harry Alter of Owens Corning and the installation of their sound attenuation product, QuietZone. Alter reviews the necessary safety equipment for installing the Owens Corning QuietZone batt insulation and demonstrates how it is installed. Alter shows how to mark outlets and cut the insulation to accomodate them. Alter also shows how the insulation can be split apart to surround existing wiring. Bob talks to Alter about making sure all the stud cavities are filled and to be on the lookout for any gaps or cracks. Alter reviews with Bob the differences between acoustic and thermal insulation. This product is a lighter weight density insulation designed specifically for accoustic insulation. A special caulk is applied in gaps and cracks that cannot be filled by the QuietZone insulation, particularly where the walls meet the floor, ceiling, and door, and around all outlets.

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.