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4.1 Ducts, flues, shafts, plumbing, piping, wiring, exhaust fans, & other penetrations to unconditioned space sealed, with blocking/flashing as needed

The following Solution Center guides provide specific guidance for sealing ducts, flues, shafts, plumbing, piping, wiring, exhaust fans, & other penetrations to unconditioned space:

Guide describing how to air seal duct and flue shafts. 

Guide describing how to air seal around plumbing and other piping.

Guide describing how to air seal electrical wiring throughout a home.

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

Guide describing how to air seal around light tubes.

Guide describing how to air seal around duct shafts and flues installed through ceilings, walls and flooring in new and existing homes.