Which components does a complete through penetration fire-stop system include?

A complete through penetration fire-stop system is designed to prevent the spread of fire and smoke through openings created by penetrations in fire-resistance-rated assemblies. The components that make up this system are crucial for ensuring the effectiveness of the fire stop.

The backing material provides support for the sealant and helps it adhere to the surrounding assembly. Fire-resistance-rated assembly materials are essential because they help maintain the integrity of the fire barrier. The penetrating item is the object that passes through the fire-rated assembly (such as pipes, electrical conduits, or ducts) and must be adequately sealed to prevent the transmission of heat and smoke. Lastly, the sealant is applied to fill any gaps around the penetrating item and ensure a tight seal that meets fire safety codes.

In summary, the combination of backing material, fire-resistance-rated assembly materials, penetrating item, and sealant forms a complete through penetration fire-stop system, which is critical for effective fire safety measures in buildings.