The poly wrap has tiny perforations that allow the insulation to breathe and resist the collection of moisture within the wrap. A sloping, parallel beam that supports a pitched roof. Metal channels used to further inhibit sound transmission from wood studs through the drywall. A vent mounted along the entire ridge line of the roof to allow the passage of air through the attic or cathedral ceiling. A louver or small dome mounted near the ridge of the roof to allow the passage of air through the attic.
Insulation materials have tiny pockets of trapped air.
These pockets resist the transfer of heat through material. The ability of insulation to slow the transfer of heat is measured in R-values. The higher the R-value, the better the insulation material's ability to resist the flow of heat through it. The structural material that spans across floor joists. It serves as a working platform during construction and provides a base for the finish floor.