Meet the Owens Corning R-21 Kraft Faced FastBatts — a reliable fiberglass insulation solution for roofs, ceilings, and interior/exterior walls. If you’re after steady comfort and straightforward installation, this is the practical choice for both DIY projects and professional jobs.

Key Features & Design

• R-Value: R-21, delivering solid thermal performance for energy efficiency across walls and ceilings.
• Size & Coverage: 5.5 in. thick x 15 in. wide x 105 in. long; covers 87.5 sq ft per bag with 8 batts per bag.
• Framing Compatibility: Sized for metal or wood framing; can be stapled or friction-fit for a secure fit.
• Ease of Installation: Easy to handle and install; trim and fabricate with a utility knife for precise fitting.
• Material & Durability: Kraft-faced fiberglass insulation; inorganic and non-corrosive to steel, aluminum, or copper; dimensionally stable and will not decay or slump in the cavity.
• Acoustic Benefit: Improves interior noise control, helping you enjoy quieter spaces without extra fuss.
• Applications: Designed for roof/ceiling and interior/exterior wall applications installed in wood or metal framing cavities or between furring channels.

In short, these FastBatts combine dependable insulation with straightforward installation. No dramatic flair needed—just solid performance that stands up to the chill and the noise, season after season.