Retrofit is one of the design advantages of FF360 firestop foam. Unlike rigid intumescent systems, the cured foam stays flexible. Installers can use a utility knife to cut a clean opening, route the new cable or conduit through the existing firestop, and re-foam the affected area to restore the rated seal.

The local re-foam should be sized to fully encapsulate the new penetrant per the relevant UL Listed System. Documentation should be updated to reflect the change so future inspectors and building managers have an accurate record of the firestop configuration.

This retrofit-friendly behaviour makes FF360 a strong choice for data centers, telecom risers and any building where service additions are routine.