What is the primary purpose of using firestop materials?

The primary purpose of using firestop materials is to prevent the passage of fire and smoke. Firestop systems are designed to seal openings and joints in fire-resistance-rated wall and floor assemblies, which helps to maintain the integrity of these barriers during a fire. This function is crucial for life safety and property protection, as it slows down the spread of flames and smoke, allowing occupants more time to escape and firefighters more time to control the situation.

While enhancing aesthetics, providing insulation, or reducing construction costs might be secondary effects, they do not capture the fundamental aim of firestop materials. The core intent is focused entirely on building safety and ensuring compliance with fire codes that demand effective fire containment strategies in various structures.