1. Penetration Seal
Fire Stopping is best defined as the sealing of any openings to prevent fire, smoke and heat from passing through the building. A firestop is a fire protection system which is used to seal openings and joints in fire-resistance rated wall or floor assemblies in order to contain the spread of fire by creating fire resisting compartments to restrict both lateral and vertical spread. This impedes the spread of fire by filling the openings in them with fire-resistant materials.