What is the role of a bond breaker in firestop joint systems?

The role of a bond breaker in firestop joint systems is to prevent bonded interaction between different materials. In construction and firestop applications, a bond breaker is typically used to ensure that the materials in a joint do not adhere to each other in a way that could compromise the expansion or contraction of the system over time. This is crucial because as building materials respond to temperature changes, a rigid bonded connection might lead to cracks or failures in the firestop system, which would undermine its ability to maintain fire resistance.

By providing a barrier that separates the two materials, a bond breaker allows for movement and ensures that the integrity of the firestop is maintained throughout its service life. This characteristic is essential for maintaining the functionality of firestop joint systems, especially in dynamic environments where building materials can expand, contract, or shift.