What is the ability of fresh material to adhere to previously installed material of the same type called?

The ability of fresh material to adhere to previously installed material of the same type is termed "Auto bonding." This term specifically refers to the process where new material can form a bond with an existing layer without the need for an additional adhesive agent. It is a crucial aspect in applications such as firestop systems, where maintaining a continuous and effective barrier is vital for fire resistance.

In practice, understanding auto bonding helps ensure that firestop materials continue to perform effectively when applied over existing layers, thus enhancing the overall integrity of the fire-rated assembly. Proper recognition of this concept aids technicians in making informed decisions about material applications in constructing and maintaining effective firestop systems.