A one-part, ready-to-use, re-enterable, intumescent putty that can be easily formed to firestop through penetrations and blank openings in fire-rated assemblies. Often used to fill voids in large openings and/or complex firestop systems. Provides up to 4-hours of fire protection. Dark red moldable putty stick.
Acts as a draft and cold smoke seal for systems with L-Ratings. In addition to its fire-resistant properties, this material has airborne sound reduction characteristics which helps minimise sound transmission through assemblies requiring an STC rating. Meets the intent of LEED® VOC guidelines.