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

Guide describing application of a radiant barrier layer in the attic to block radiant heat transfer between hot surfaces and heat-absorbing surfaces.

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

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 describing how to re-roof an existing home with a sloped and add insulation above the roof deck.

Guide describing an approach to re-roofing an existing flat roof to improve thermal, water, and air control performance.

Guide discussing disaster resistance related to asphalt shingle roofing when installing roofing on new construction or when repairing or replacing roofing on existing homes.

Guide describing how to seal roof valleys and how to seal around pipes, chimneys, and other roof deck penetrations.

Guide discussing disaster resistance related to metal roofing when installing roofing on new construction or when repairing or replacing roofing on existing homes.

Guide describing how to apply an air control layer directly over existing wall sheathing and cover with two layers of insulating sheathing held in place by vertical furring strips.

Guide describing techniques for installing insulating sheathing as a continuous drainage plane on walls.