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ROCKWOOL Comfortbatt R-15 is a semi-rigid stone wool batt for 2x4 wood stud walls, joists, ceilings and floors. Its flexible edge compresses during install and springs back against studs, filling gaps from warped or off-center framing so the rated R-value holds. Stone wool is non-combustible, resists moisture and rot, and absorbs sound well, which sets it apart from fiberglass batts that need more careful fitting and itch more. It suits DIY renovators and builders who want dependable thermal and acoustic performance in standard 24-inch framing.
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Owners and installers consistently praise the fit, sound deadening and fire resistance of Comfortbatt. Most complaints center on the itch and dust during handling and the higher weight than fiberglass.
Rockwool Comfortbatt is a stone wool insulation for wood studs and joists. It is used in new residential construction and in renovations, and it fits walls, attics, ceilings, and floor frames.
The batt is semi-rigid with a flexible edge. The edge compresses as the batt goes into the frame, then springs back to press against the studs for a complete fill. This lets the batt adjust to normal variations in stud spacing caused by distortion or warping, so the expected R-value is achieved.
The batt cuts easily. It is non-combustible and absorbs sound well. It does not rot or promote the growth of fungi or mildew, absorbs little moisture, and is water resistant. It is made from natural and recycled materials, and both the product and the process are free of CFCs and HCFCs. It can contribute to earning LEED points.
