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