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Guides A-Z

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 add spray foam insulation to the underside of the existing roof deck.

Information guide describing how to calculate ventilation area in existing roofs.

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

Information guide describing how to assess attics, ceilings and roofs before proceeding with upgrades in existing homes.