Rockwool Comfortbatt R23 is a stone-wool insulation batt designed to keep your home warm in the winter and cool in the summer, all while trimming energy bills. Ideal for homeowners tackling attic, wall, and basement projects, it delivers steady comfort with a touch of rugged reliability. Note: If you require delivery to ID, MT, OR or WA, select that delivery zone as pricing and delivery to those states may vary.

Key Features & Design

• R-Value: 23
• Thickness: 3.5 inches
• Sizes & Coverage:
  • 23" x 47" — 37.5 sq ft per pack, 5 batts per bag
  • 15.25" x 47" — 39.8 sq ft per pack, 8 batts per bag
• Material & Durability: Rockwool is made from natural stone (inorganic materials), making it moisture resistant and resistant to mold and mildew. It’s non-combustible and fire-resistant for up to two hours, adding extra protection to your property.
• Performance & Comfort: Energy savings begin with proper insulation in attics and exterior walls, with Rockwool Comfortbatt helping reduce heat loss and keeping living spaces comfortable year-round.
• Installation & Fit: Easy to cut and install. Its stonewool composition, density, and friction-fit batts help prevent gaps that can lead to energy loss, so you or your contractor can seal up tight without playing hide-and-seek with drafts.
• Applications: Ideal for attics and exterior walls, and also effective on exposed basement concrete walls and heated crawl spaces to improve overall home energy efficiency.

In short, Comfortbatt R23 is a straightforward, durable choice for better insulation that doesn’t require heroic effort to install. It blends performance with practicality, so you can focus on enjoying a warmer home in winter and lower cooling costs in summer.

Other COMFORTBATT Products

• Rockwool ComfortBatt R30: With an R-value of 30, providing excellent thermal performance for walls, floors, and ceilings. Inorganic materials resist moisture, mold, and mildew.
• Rockwool ComfortBatt R15: An excellent option for adding insulation to existing walls and floors. Made from recycled materials and resistant to moisture, mold, and mildew.