FireStop™ Mineral Wool

NSi FireStop™ Mineral Wool is a pre-formed, non-combustible mineral wool insulation. It is a semi-rigid combination of basaltic mineral wool and proprietary binders. The mineral wool is pre-cut into various widths and depths in 48 inch lengths for ease of handling and immediate installation. It is intended for use as a firestop system component and forming material in tested firestop systems and designs. It is friction fitted into openings, joints, gaps, spaces and voids in fire rated assemblies. It is usually used in conjunction with firestop sealant products such as Silicone, Silicone SL and Intumescent Caulk.