Building Components

Roof/Floor/Ceiling » Air Sealing Roof/Floor/Ceiling

Guide describing how to air seal and insulate a cantilevered floor.

Guide describing how to insulate and air seal dropped ceilings and soffits to prevent air leakage.

Guide describing how to create an air barrier between the garage and the conditioned space above it to prohibit pollutants from entering a home's interior.

Guide describing how to install a continuous rigid air barrier or other supporting material to separate the exterior from the conditioned space.

Guide describing how to air seal and insulate a ceiling.

Guide describing how to air seal attic access panels, doors and stairs in order to provide a continuous air barrier.

Guide describing how to insulate closed crawlspace walls and band joist areas with rigid foam board insulation.

Guide describing methods for insulating an unvented attic along the roof line.

Guide describing method for installing ducts in a duct chase above a dropped ceiling.

Guide describing method for designing and installing ducts in a raised ceiling chase. 

Guide describing ways to air seal an attached garage.

Guide describing ways to pest-proof a home’s foundation.

Guide describing application of a radiant barrier layer in the attic to block radiant heat transfer between hot surfaces and heat-absorbing surfaces.

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High-Efficiency Range Hood

In homes that lack a kitchen range-hood fan, moisture and odors from cooking can linger in the kitchen or disperse through the home, causing lasting smells and increasing indoor humidity levels to a level that affects indoor air quality by contributing to mold growth and condensation. High-quality kitchen range fans remove moisture and odor-laden air and exhaust it outside rather than recirculating it into the kitchen. ENERGY STAR-rated exhaust fans have low sone ratings indicating quiet operation, low power draw, and in some cases multiple speeds for spot exhaust and continuous ventilation.