Construction joints must be sealed with joint systems, which will impart a fire resistance at least equal to those of the adjacent constructions so that overall fire resistance is not compromised.
The 3M line of products consists of duct wrap and plenum wrap. The duct wrap products are completely foil-encapsulated and are used for commercial kitchen exhaust great ducts, fire rated air ventilation exhaust ducts, chemical exhaust ducts and stair pressurization ducts.
A Through Penetration firestop system is a specific construction consisting of a wall or floor assembly, a penetrating item passing through an opening in the wall or floor assembly, and the materials designed to prevent the spread of fire through the opening.