Metacaulk 1200, 5 .gal Pail Caulk Grade Red

Metacaulk 1200, Firestop Sealant for Construction Joints Metacaulk 1200 by RectorSeal is a single-component, water-based firestop sealant designed for general use in construction joints. It cures to an elastomeric membrane seal suitable for areas subject to dynamic movement. This product prevents the spread of flames, smoke, hot gases, and water through joint openings, making it ideal for firestopping applications in building construction. Its versatility and compliance with fire resistance standards make it a reliable choice for electrical distributors and switchgear suppliers requiring effective fire and smoke barriers. Specifications Product Weight: 60.65 lbs Color: Red or White Application: Spray, brush, or direct from cartridge or container Density: 10.5 lbs/gal Skin Over Time: 30-45 minutes at 77°F (25°C) Cure Time: 5 to 7 days (1/8" at 77°F/25°C) pH Value: 7 to 8 VOC Content: Negligible (<1% or <10 g/L) Boiling Point: 212°F (100°C) @ 760 mmHg Specific Gravity: 1.1 (H2O=1) Flash Point: None UL 2079 Fire Resistance: Up to 3 hours ASTM E814 (UL1479) Firestop Rating: Up to 2 hours ASTM E1399: Passed 500 movement cycles ASTM E84 / UL 723 Tunnel Test: Flame Spread Index 5, Smoke Developed Index 5 Features Single-component, ready to use without dilution or mixing Water-based and paintable Highly flexible and elastomeric to accommodate dynamic joint movement Effective barrier against fire, smoke, hot gases, and water penetration Contains biocides to resist mold growth in both wet and dry states Applicable via spray, brush, caulking gun, or trowel Freeze-thaw stable Complies with low VOC requirements Minimum 2-year shelf life when stored properly Non-toxic, non-flammable, and stable under normal storage conditions Downloads & Links Safety Data Sheet PDS - Spanish Spec Sheet PDS - French SDS - French SDS - Spanish Certified Clean Air Gold Certificate