What is a common mistake during firestop installations?

A common mistake during firestop installations is underestimating the size of the annular space. Understanding the dimensions of the annular space—the gap between the firestop material and the penetrant— is critical because it directly affects the effectiveness of the firestop system. If this space is not accurately measured, it can lead to inadequate sealing, allowing for the passage of smoke and fire, thereby compromising the integrity of the fire barrier.

Accurate assessment of the annular space ensures that the correct amount of firestop material is used, which is necessary for achieving the desired fire rating. Proper sizing also helps in determining the appropriate firestop product to use, whether it be a sealant, putty, or collared device, ensuring compliance with building safety codes and regulations.

By focusing on the correct measurements during installation, practitioners can help ensure that the firestop system performs as intended during a fire incident, thus safeguarding lives and property.