Materials and installation details.

Fiberglass batts fitted into wood wall framing

Packaged fiberglass insulation ready for installation

Diagram showing insulation and air sealing areas of a home

Installer fitting fiberglass batts between studs

Installer working with loose-fill insulation in an attic

Fiberglass batt installation close-up

Wall insulation and a laser level

Spray foam application equipment in use

Insulated roof and wall assemblies in an unfinished room

Insulation around a framed window opening

Installer working between attic rafters

Loose-fill insulation material close-up

Insulated sloped roof with open wood framing

Continuous spray foam coverage in an unfinished room

Fiberglass insulation in wall and roof framing

Air sealing along a framing connection

Installer fitting insulation in an open-framed wall