Metacaulk® 1100 is a water-based intumescent firestopping sealant/mastic and smoke seal designed for spray application that can also be brushed or troweled into construction joints, such as at top of the wall, curtain wall perimeter, and general construction gaps and voids. STC rating 54, Tested in a UL 411 wall assembly/section to ASTM E90.
- UL Classifi ed systems up to 4 hours
- Meets ASTM E 814 & ASTM E 1966 (UL 2079) Standards
- Remains flexible
- Can be applied by spray, trowel or brush