FireStop™ Mortar

NSi FireStop™ Mortar is a single component non-combustible fiber reinforced, foamed cement mortar. It is intended to provide economical, non-combustible and tight-fitting firestops at openings and penetrations through fire-rated wall and floor assemblies. FireStop™ Mortar powder mixes easily to form a shaving cream-like, non-slumping paste. This feature premits easy installation with a minimum of damming. When cured, FireStop™ Mortar is self-supporting and therefore may be used for large openings where other firestopping materials are impractical. It requires and contains no solvents and is comprised of materials of low toxicity. It mixes and trowels easily and tools are cleaned with water. Dust protection is recommended. The tools are cleaned with water. Dust protection is recommended. The color is a distinctive charcoal (dark grey). ASTM E 814 and UL 1479. Coverage per bag is 850 cn in. or 0.49 cn ft.