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Comfortbatt R-30 is a semi-rigid stone wool batt for 2x10 wood stud walls, floors and ceilings. Its flexible edge compresses during install and springs back against the 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 handle water poorly. It suits builders and renovators framing with standard wood studs who want fire and sound performance along with thermal insulation.
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Owners and installers praise Comfortbatt for fitting snugly around imperfect framing and for noticeably quieter, better-sealed walls than fiberglass. The main complaints are the higher cost and the heavier, itchier handling.
Rockwool Comfortbatt is a stone wool insulation for wood studs and joists. It is used in new residential construction and in renovations, in walls, attics, ceilings, and floor frames.
The batt is semi-rigid with a flexible edge. The edge compresses as the batt is inserted, then springs back to expand against the studs for a complete fill. This lets it compensate for normal variations in stud spacing caused by distortion or warping, so the expected R-value is achieved.
The insulation is easy to cut, non-combustible, and absorbs sound well. It is water resistant, has low moisture absorption, and does not rot or promote the growth of fungi or mildew. It is made from natural and recycled materials, and the product and process are CFC and HCFC free. It can contribute to earning LEED points.
