Owens Corning Thermafiber UltraBatt R-23 Mineral Wool Batt Insulation, 5.5 in x 15 in x 47 in (Individual Pack)
Regular price $39.58Thermafiber 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:
| Specification | Details |
|---|---|
| R-Value | 23 |
| Insulation Type | Mineral wool |
| Faced/Unfaced | Unfaced |
| Thickness | 5.5 in |
| Width | 15 in |
| Length | 47 in |
| Coverage Area | 24.5 sq ft per pack |
| Fits 2 x 4 Walls | No |
| Fits 2 x 6 Walls | Yes |
| For Use in Walls | Yes |
| For Use in Attics | No |
| For Use in Ceilings | No |
| For Use in Floors | No |
| Sound Barrier | Yes |
| Framing Type | Wood studs |
| Stud Spacing | 16 in OC |
| Formaldehyde Free | Yes |
| Vapor Retardant | No |
| ENERGY STAR Certified | Yes |
| Warranty | Limited lifetime |
| Package Type | Individual pack |
| Package Count | 1 |
| R-Value per Inch | 4.18 |
| Bag Dimensions (L x W x D) | 47 x 26 x 15 in |
| Package Weight | 29.2 lb |
| CA Prop 65 Warning | Yes |
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.
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