J & S Supply is a dedicated distributor of Rockwool Curtainrock 40 and Curtainrock 80 are stone wool insulation boards designed for use as the insulation for curtain wall spandrels and mullion covers. Along with ROXUL Safe, it serves as a primary insulation component within a range of ASTM E2307 tested and approved perimeter fire containment systems.
Available unfaced or with a reinforced foil facing, Curtainrock 40 and Curtainrock 80 are noncombustible and fire resistant, and will not develop smoke or promote flame spread when exposed to fire. Curtainrock 40 and Curtainrock 80 offers superior thermal and acoustic performance, along with moisture resistance and noncorrosive properties, and are resistant to mold and mildew growth.
