In the context of firestop systems, what does "compression" refer to?

In the context of firestop systems, "compression" specifically refers to the force applied to the firestop material. This concept is crucial because firestop products often need to maintain their effectiveness in the presence of dynamic forces, especially when it comes to maintaining the integrity of joints and penetrations in fire-resistance-rated assemblies. The ability of a firestop material to withstand compression ensures that it effectively seals gaps and voids, thereby preventing the spread of fire and smoke through penetrations.

Understanding compression is essential, as it directly impacts the material's performance under various conditions, including those caused by thermal expansion or mechanical movement. This characteristic is particularly important in ensuring that the firestop solution remains intact and functioning as intended over the lifespan of the building.