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

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

Guide describing wind washing and how to prevent it.

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

Guide describing how to air-seal and insulate the floor above an unconditioned basement or crawl space.

Guide providing guidance on insulating attic eaves in new and existing single-family homes and multifamily buildings.

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.