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

Guide describing a method for insulating an unvented attic by spraying foam insulation along the underside of the roof deck.

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

Guide describing methods for insulating an unvented attic along the roof line.