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Guide describing how to air-seal duct and flue shafts.

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

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

Guide describing how to insulate a basement to improve the overall thermal performance of the building and provide more dry, usable conditioned space for home occupants and HVAC equipment.

Guide describing how to air-seal bathroom and kitchen exhaust fans.

Guide describing the types of whole-house fans, installation details to reduce energy loss, and how to operate them for comfort and energy savings based on climate zone.

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

Guide describing how to air-seal around light tubes.

Guide describing ways to air-seal an attached garage in new and existing homes.

Guide describing wind washing and how to prevent it.

Guide describing options for designing and locating the thermal boundary at either the attic floor or along the roof line in new and existing homes.

Guide describing insulation techniques for skylight shaft walls.

Guide describing how to correctly air-seal a wall with missing top plates or open wall cavities.

Guide describing how to use a blower door test to determine building envelope air leakage.