Guide
Description
Guide describing how to install insulation below platforms constructed in the attic for walkways, HVAC equipment, or storage.
Guide
Description
Guide providing guidance on insulating attic eaves in new and existing single-family homes and multifamily buildings.
Reference
Description
Information sheet presenting techniques for installing cellulose insulation.
Guide
Description
Guide describing how to increase insulation in existing homes by installing batt insulation on the ceiling plane of a vented attic.
Guide
Description
Guide describing how to insulate a vented attic in an existing home using blown insulation added to the attic floor.
Reference
Description
Article explaining installing cavity insulation.
Guide
Description
Guide describing how to air-seal and insulate a ceiling where the insulation is installed on top of the ceiling (on the attic floor) in a vented attic.
Guide
Description
Guide describing the installation of insulating sheathing above the roof deck on existing homes. This retrofit assembly is appropriate for homes with conditioned attics or where the retrofit is intended to create a conditioned attic.
Guide
Description
Guide describing how to apply spray foam insulation to the floor of the attic in existing homes.
Guide
Description
Guide describing how to add spray foam insulation to the underside of the existing roof deck as part of the conversion of a vented attic to an unvented, insulated attic.
Reference
Description
This page provides important information on how to protect yourself and your family if you suspect that you might have vermiculite insulation from Libby, Montana.
Guide
Description
Guide describing how to air seal and insulate a non-ICAT recessed "can" light from an accessible attic in an existing home.
Application of Spray Foam Insulation Under Plywood and Oriented Strand Board Roof Sheathing, BA-1312
Reference
Description
Report covering moisture and leakage issues associated with spray foam insulation application to the underside of roof sheathing.
Reference
Description
Report exploring alternative methods to find long-term solutions to energy loss in 1 ½-story homes to save energy, improve comfort, prevent frost buildup on the underside of the roof deck, and reduce the risk of ice dam formation/reformation.
Guide
Description
This guide describes how to install a rigid air barrier to separate the porch attic from the conditioned space.
Guide
Description
Guide describing how to retrofit an exterior wall and/or attic to provide continuous air sealing.
Guide
Description
Guide describing how to insulate and air-seal attic knee walls and floor joist cavities under knee walls.
Guide
Description
Guide describing how to insulate and air-seal dropped ceilings and soffits to prevent air leakage.
Reference
Description
Report on heating and cooling air-distribution ducts that are insulated, installed close to the ceiling in a vented attic and covered with attic insulation to minimize energy loss.
Guide
Description
Guide describing how to air-seal attic access panels, doors, and stairs to provide a continuous air barrier at the ceiling.
Guide
Description
Guide that illustrates how and when to encapsulate ductwork in unconditioned attics, increasing the R-value of duct insulation, mitigating condensation issues, and reducing air leakage.
Guide
Description
Guide describing how to correctly air-seal a wall with missing top plates or open wall cavities.
Reference
Description
Information sheet with information about insulating and ventilating attics.
Guide
Description
Guide describing how to air-seal duct and flue shafts.
Guide
Description
Guide describing application of a radiant barrier layer in the attic to block radiant heat transfer between hot surfaces and heat-absorbing surfaces.
Case Study
Description
Case study describing the elimination of excessive humidity in the attic of a multi-floor, single-family home that was causing condensation and water damage along the roof and eaves.
Guide
Description
Guide describing ways to seal drywall to the top plate of an exterior wall to air-seal the wall cavity.
Case Study
Description
Case study describing an experiment to build and instrument unvented test roofs using air-permeable insulation in a cold climate and to analyze the moisture effects over time.