Roofs, Attics & Ceilings -

Attics

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

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

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 a method for insulating an unvented attic by spraying foam insulation along the underside of the roof deck.