Guides A-Z

Guide providing guidance on insulating attic eaves in new and existing single-family homes and multifamily buildings.

Guide describing how to increase insulation in existing homes by installing batt insulation on the ceiling plane of a vented attic.

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.

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

Guide describing options for designing and locating the thermal boundary at either the attic floor or along the roof line in new and existing homes.