Building Components

Walls/Openings » Air Sealing Walls/Openings

This guides describes how to insulate and air seal attic knee walls and floor joist cavities under knee walls.

Guide describing the air sealing of rim joists on walls connecting homes and attached garages.

Guide describing how to install fully-aligned air barriers in exterior walls.

This guide describes installation procedures for continuous rigid insulation to help provide thermal protection, reduce thermal bridging and provide a moisture barrier. 

Guide describing construction and insulation techniques for double wall framing.

Guide describing how to air seal around plumbing and other piping.

Guide describing how to air seal electrical wiring throughout a home.

Guide describing how to air seal bathroom and kitchen exhaust fans.

Guide describing how to air seal around light tubes.

Guide describing how to correctly air seal a wall with missing top plates, or open wall cavities. 

Guide describing how to air seal modular home marriage joints.

Guide describing how to air seal the gap between the drywall shaft wall (i.e., common wall) and the structural framing between units in multifamily housing.

Guide describing how to air seal doors that are next to unconditioned spaces.

Guide describing methods for insulating an unvented crawlspace or conditioned basement with rigid foam on the interior side of the walls to provide an insulated space for HVAC equipment.

Guide describing ways to air seal an attached garage.

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

Guide describing how to repair areas affected by wind washing in existing homes.