What is the purpose of fire stopping materials?

The primary purpose of fire stopping materials is to prevent the spread of fire and smoke within a structure. Fire stopping refers to the use of specific materials to seal openings and joints in fire-resistance-rated wall and floor assemblies. This is crucial for maintaining the integrity of fire barriers, which are designed to compartmentalize a building in order to slow or inhibit the spread of fire from one area to another.

When fire stopping materials are properly installed, they help to contain smoke and toxic gases during a fire event, which not only protects property but also enhances the safety of occupants by providing additional time for evacuation. By limiting the penetration of heat and flames through openings such as pipe penetrations, electrical conduits, and HVAC ducts, fire stopping materials play a vital role in a building's overall fire protection strategy.

These materials are specifically engineered to expand under heat, creating a barrier that seals gaps and openings, thus reinforcing the effectiveness of fire-rated assemblies.