3M™ Fire Barrier Watertight Spray is a sprayable, moisture-curing hybrid siliconized polymer that forms a tough, elastomeric coating. This material is used to firestop perimeter joints (curtain wall) and construction joints.
- Up to 3-hour fire protection in construction joints per ASTM E 1966 (UL 2079)
- Up to 3-hour fire protection in perimeter joints per ASTM E 2307
- Elastic material maintains performance with up to ±10% movement capabilities
- Paintable with primer
- Broad range of applications (extensive portfolio of tested and listed building and perimeter joint systems)
- Improved spraying pattern: applied with conventional airless spray equipment
- Robust jobsite formula (freeze/thaw resistant and uniform seal formation in hot or cold conditions)