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

Guide describing how to repair or replace skylights in existing homes.

Guide outlining how to retrofit an exterior wall and/or attic to provide continuous air sealing.

Guide describing how to insulate a vented attic in an existing home using blown insulation added to the attic floor.

Guide describing how to apply spray foam insulation to ceilings in existing homes.

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