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Guides A-Z

This guide provides information about installing 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 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 insulate and air seal dropped ceilings and soffits to prevent air leakage.

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

Guide describing wind washing and how to prevent it.