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.

This guide describes how to install a rigid air barrier to walls behind showers and tubs.

This guide describes how to install a rigid air barrier to walls behind fireplaces.

Guide describing insulation techniques for skylight shaft walls.

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

Guide describing how to air seal duct and flue shafts. 

Guide describing how to air seal a whole-house fan system.

This guide describes how to install a rigid air barrier to separate the porch attic from the conditioned space. 

Guide describing how to create a fully aligned air barrier behind a staircase.

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

Guide describing how to air seal sill plates.

Guide describing how to air seal window and door rough openings.

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

This measure guides describes how to install structural insulated panels to block excessive heat loss and gain though structural framing. 

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 recessed light fixtures. 

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 with information about how to seal sheetrock to the top plate to create an air tight wall cavity.

Guide describing how to air seal modular home marriage joints.

Guide describing how to correctly seal structural insulatel panel (SIP) seams.

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.