When inspecting a firestop system, what is a crucial feature to look at?

When inspecting a firestop system, a crucial feature to look at is the complete sealing of all penetrations without any visible gaps. This is essential because firestop systems are designed to prevent the passage of fire and smoke through openings and penetrations in fire-resistance-rated walls and floors. If there are gaps, even small ones, it compromises the integrity of the firestop system, allowing fire and smoke to travel between compartments, which undermines fire safety efforts.

Effective firestopping materials are specifically formulated to expand and seal these penetrations thoroughly, preventing any potential breach. The absence of visible gaps ensures that the firestop performs as intended, maintaining the fire-resistance rating of the construction assembly. Proper installation significantly contributes to occupant safety and property protection during a fire event, making this aspect a top priority during inspection.