Metacaulk® Intumescent Putty Sticks is a moldable non-curing one component fire-rated material for through-penetration firestop systems.  Putty Sticks will intumesce when heated, forming an insulating char.
In the event of a fire, Metacaulk® Putty Sticks will prevent the spread of flames, smoke, gas, and water through penetration openings. Putty Sticks are applied by hand.  Mixing is never required and no special skills are necessary for installation.
Metacaulk® Putty is rated for up to 3 hours in accordance with the ASTM E 814. UL 1479 and ULC/CAM4-S115M test standards.
Intumescent Putty Sticks Various Applications
- Metal or Non-Metal Electric Boxes
- Small Openings
- EMT Pipe
- Steel, Conduit, and Cabling (Telephone, Â Power, Communications)
Intumescent Putty Sticks Features
- For interior use and has No Volatile Solvents- useful when installing in confined spaces or occupied areas. Does not have Asbestos Fillers. D.O.T Classification is Not Regulated.
- Applied by hand and Easy to install- Mixing never required and no special skills or additives are necessary for installation. Adheres to all common building common surfaces.
- Rated for up to 3 hrs. in accordance with the ASTM E 814, UL 1479 and ULC/CAN4-S115-M test standards. Pads have Sound Transmission Class (STC) Rating 60. Only one pad thickness (1/8″) needed for a 1-2hr. fire rating.
- No additional putty material needed to plug end of each electrical metallic tube or conduit as its connection to the box.
- Required by Building Codes in rated partitions where horizontal separation of opposite facing electrical boxes is under 24 inches
Contact us for more information on firestopping options.