Rockwool has added R-13, R-21, and R-38 batts to its Comfortbatt line, and introduced dimensions for wood-stud applications to its AFB (acoustical fire batt) line, previously sized only for steel-stud applications. Comfortbatt is a semi-rigid stone-wool batt insulation for exterior wood- and steel-stud walls, ceilings, and floors that features a flexible edge designed to expand the batt to completely fill a stud cavity. AFB is a lightweight stone-wool insulation for interior walls, ceilings, and floors that the maker says provides greater sound reduction and fire protection than Comfortbatt. Both products are noncombustible and resist temperatures up to 2,150˚F. Contact local distributors for pricing. rockwool.com
