Guides A-Z

Guide describing how to air-seal and insulate a ceiling where the insulation is installed on top of the ceiling (on the attic floor) in a vented attic.

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

Guide describing the use of building cavities as supply or return ducts.

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

Guide describing buried ducts in loose-fill attic insulation, a method that can only be used in dry climates.

Guide describing approaches to burying and encapsulating ducts in unconditioned attics to increase the overall R-value of duct insulation.

Guide that illustrates how and when to encapsulate ductwork in unconditioned attics, increases the R-value of duct insulation, mitigating condensation issues and reducing air leakage.

Guide describing steps to keep birds, rodents, and other pests out of vent openings and other locations in new and existing homes.

Guide describing how to hang ducts with supporting straps or saddles to adequately support ducts so they do not sag and are not pinched or compressed in a manner that would cause damage to the ducts, the duct insulation, or the duct air barrier covering.

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 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 wind washing and how to prevent it.