ROCKWOOL Comfortbatt R-15 Unfaced Mineral Wool Batt Insulation – 3-1/2 in x 15-1/4 in x 47 in (59.73 sq ft)
Regular price $74.93R-15 Unfaced Mineral Wool Batt Insulation
ROCKWOOL Comfortbatt is an unfaced mineral wool (stone wool) batt insulation designed for wood and steel stud cavities to improve energy efficiency and comfort. Its flexible edge helps it friction-fit into place while maintaining R-value, and it also provides fire resistance, moisture resistance, and sound absorbency.
Key Features:
- Flexible Edge Fit: Designed to friction-fit in stud bays for easier installation and reduced over-compression to help maintain R-value.
- Fire Resistant Mineral Wool: Non-combustible stone wool insulation that resists flame spread and helps limit toxic smoke development in a fire.
- Moisture Resistant Performance: Water and moisture resistant to support long-term thermal performance.
- Sound Absorbing Comfort: Excellent sound absorbency to help reduce noise transfer through walls and assemblies.
- Healthy Indoor Choice: GREENGUARD Gold Certified to support improved indoor air quality.
Please check the Product Data Sheet Here
Specifications Table:
| Specification | Details |
|---|---|
| Product line | Comfortbatt® |
| Insulation type | Thermal batt insulation |
| Material | Mineral wool (stone wool) |
| R-value | R-15 |
| Facing type | Unfaced |
| Thickness | 3-1/2 in |
| Width | 15-1/4 in |
| Length | 47 in |
| Coverage area | 59.73 sq-ft |
| Installation type | Ceiling |
| Application | Exterior wood and steel stud applications |
| Construction type | Wood stud construction |
| Density | >2 lb/cu-ft |
| Certifications | GREENGUARD Gold Certified |
| Fire performance | Non-combustible; fire resistant; will not promote flame spread |
| Moisture performance | Water and moisture resistant |
| Acoustic performance | Excellent sound absorbency |
| Warning | California Residents: Proposition 65 Warning www.P65Warnings.ca.gov |
Frequently Asked Questions (FAQ):
Q: What cavities is this batt sized for?
A: These batts are 3-1/2 in thick and 15-1/4 in wide, commonly used in 2x4 wood-stud framing and similar cavity widths.
Q: Is this insulation faced or does it include a vapor retarder?
A: No—this product is unfaced, so it does not include an integrated facing or vapor retarder.
Q: Where can Comfortbatt be installed?
A: It’s intended for exterior wood and steel stud applications and is also listed for ceiling installation.
Q: How much area does one package cover?
A: One package covers 59.73 sq ft.
Q: What material is it made from?
A: It is made from mineral wool (stone wool).
Quiet luxury, built into the bones of the home.
Great spaces don’t just look beautiful—they feel composed, calm, and perfectly tempered. Comfortbatt’s dense stone wool batt tucks cleanly into stud bays with a flexible edge that reads like a tailored fit, elevating comfort while helping soften noise from room to room. Use it to make bedrooms and media rooms feel more cocooned, or to give exterior walls a steadier, more serene thermal presence. It’s the kind of behind-the-walls upgrade that makes everyday living feel effortlessly luxe.
Upgrade your walls or ceilings with ROCKWOOL Comfortbatt for a quieter, more energy-efficient home with fire-resistant mineral wool performance.
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