Specified Technology STI Special Firestop Mortar - SpecSeal Firestop Mortar

This product is a Portland cement-based sealant that is lightweight and more cost-effective than most other products. This mortar also costs high-level resistance and protection against fire. Property Value Color Pale red Odor No perceptible odor Density Mixed (Wet) 53 to 80 lb/cu. ft = 7.1-10.7 lb/gal (0.85-1.28 kg/L) Density (Dry Mortar) 24 to 26 lb/cu. ft = 3.21-3.4 lb/gal (0.38-1.42 kg/L) Flame Spread 0* Smoke Development Less than 5* Application Temperature 35°F (2°C) to 100°F (38°C) In Service Temperature -10°F (-23°C) to 200°F (93°C) Storage Temperature No Limit Ratio of Water/Mortar 17.4/22 to 22/22 Yield (Per 22 lb.) 1,250 cu. in (20.5 L) to 1,400 cu. in (22.9 L) Open Time 30 Minutes working time Shelf Life No Limit *Tested to ASTM E84 (UL723) at 14% surface coverage (modified test for sealants and caulks)