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Owens Corning R-13 Kraft Faced Fiberglass Insulation Batts are 3.5-inch-thick batts sized for 2x4 wood or metal framing, with a kraft paper facing that acts as a vapor barrier. The 15-inch width and 93-inch length fit standard stud bays, and the batts can be cut and split to fit around wiring, boxes and odd cavities. R-13 is the common choice for above-grade exterior and interior 2x4 walls, where it competes with unfaced batts plus a separate vapor barrier and with mineral wool on fire and moisture resistance. Fiberglass is the cheaper, lighter option; mineral wool is denser, cuts cleaner and handles moisture better but costs more and is heavier to install.
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Owners and installers describe these batts as straightforward to cut and fit into standard 2x4 bays, with the kraft facing saving a separate vapor barrier step. Complaints center on fiberglass itch and dust, and on how much the rated R-value depends on a careful, uncompressed install.
These Owens Corning R-13 insulation batts are made of fiberglass with a kraft paper facing. They are designed to reduce heat transfer and help lower energy costs. The kraft facing acts as a vapor barrier against moisture.
The batts are sized for 2x4 interior and exterior walls, sheds and basement walls, and fit metal or wood framing. They can be stapled in place or friction-fit, and they trim to size with a utility knife. The fiberglass is inorganic, resists mold and mildew, and does not corrode steel, aluminum or copper. The batts are dimensionally stable, so they will not decay or slump within the cavity, and they also help control interior noise.
