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Owens Corning R-13 unfaced fiberglass batts are a standard thermal and acoustic insulation for 2x4 wood or metal framing. The unfaced format lets you place the vapor barrier where your climate and wall assembly need it, which faced batts do not allow. They friction-fit or staple into stud and joist cavities, and the R-13 rating suits interior and exterior 2x4 walls. Compared with faced batts, they demand more planning on vapor control; compared with mineral wool, they are lighter and easier to cut but offer no added fire or moisture resistance.
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Lowest price we've seen: $95.26 on Nov 12 at Supply Ontime. Tracked across 1 store since Nov 12.
Owners and installers treat these as dependable, easy-to-handle batts that cut and friction-fit well in standard stud bays. Complaints center on the itch and dust of handling fiberglass and on the extra work of adding a separate vapor barrier.
These unfaced fiberglass insulation batts have an R-value of 13. They fit into wood or metal framing cavities or between furring channels. Because they have no facing, the vapor barrier can be placed where the project calls for it.
The batts can be stapled in place or friction-fit. They can be trimmed with a utility knife for a custom fit. The material is dimensionally stable and resists decay and slumping.
The batts are made from inorganic materials and are non-corrosive, so they are safe to use with steel, aluminum or copper. They also provide acoustical control.
