Should I Use Faced Insulation?

Q: My home has about 6 inches of fiberglass insulation in the attic, and I’m planning to add more. Should I use faced insulation?

A: No; only use unfaced fiberglass insulation. The facing acts as a vapor retarder that helps reduce the amount of moisture entering a wall, ceiling or floor. In hot climates, your original layer of insulation should already have a vapor retarder facing the living area of your home. If you add a second vapor retarder with another layer of faced insulation, any moisture that does get through the first layer may condense on the second. This can cause water stains on the ceiling and could lead to mold and structural damage. When the joist cavity is full, install the second layer of unfaced insulation perpendicular to the first, covering the ceiling joists to reduce heat loss through the wood. Otherwise, install the second layer right on top of the first layer, between the joists.

Related Posts

EHT Newsletter

Sign up for the monthly EHT Newsletter including DIY tips, industry updates, trends, and more

Hot Product

WiseBond™ 2″ DEEP POUR™ River Table Epoxy

WiseBond™ Epoxy systems are premium commercial grade resins for woodworkers, artisans, and DIY furniture enthusiasts. This epoxy isn’t your average everyday epoxy purchased at the local hardware store. WiseBond™ has been purposely developed for the wood table and furniture builders world. Our flagship epoxy, WiseBond™ Deep Pour™ Epoxy, sets us out from the crowd as […]

Read More >>