Firestopping Contractors in Langley, Burnaby & Delta Firestopping is a code-mandated part of any commercial or multi-family build, sealing penetrations in fire-rated walls and floors to prevent the spread of fire and smoke. A qualified firestopping contractor in Langley or firestopping contractor in Burnaby should be certified to install listed firestop systems that match the specific penetration type — whether it's cable, pipe, or duct penetrations. visit: https://www.hsinsulation.ca/