Thermafiber UltraBatt R-23 Mineral Wool Batt

Professional-grade mineral wool batts engineered for 2x6 exterior wall cavities deliver R-23 thermal performance with excellent fire and mold resistance. Semi-rigid, unfaced batts are easy to cut and fit around irregularities for faster, cleaner installs.

Key Features:

• High Thermal Performance: R-23 mineral wool for 2x6 exterior wall cavities to boost energy efficiency
• Fire and Moisture Resistance: Non-combustible and mold resistant for safer, healthier assemblies
• Easy Installation: Semi-rigid, flexible batts cut cleanly and conform to irregular framing
• Sound Control: Dense fiber structure helps dampen noise between rooms
• Formaldehyde-Free: Made without added formaldehyde for improved indoor air quality

Specifications Table:

Frequently Asked Questions (FAQ):

Q: Is this insulation faced?
A: No. It is unfaced and does not include a vapor retarder.

Q: What size studs does it fit?
A: Designed for 2x6 wood stud walls with 16-inch on-center spacing.

Q: Can it be used in ceilings or attics?
A: It is intended for wall cavities; Lowe's specs indicate not for attics, ceilings, or floors.

Q: How much area does one pack cover?
A: Each individual pack covers 24.5 square feet.

Q: What are the batt dimensions?
A: Each batt is 5.5 in thick, 15 in wide, and 47 in long.

Sculpted Warmth with Quiet Confidence

Thermafiber UltraBatt tucks into a wall like a tailored suit—crisp, dense, and utterly composed. Its mineral wool body delivers a refined hush and steadfast warmth, raising the caliber of everyday living. I love the deep, dimensional texture that feels architecturally intentional behind your finishes. Line your primary suite or media wall with it to craft a cocooned, luxury ambiance—comfort that’s as considered as your design.

Upgrade your walls with R-23 Thermafiber UltraBatt today and lock in comfort, quiet, and energy savings with every install.