AIS FR Acrylic Sealant - FP 505 is designed to prevent the spread of fire, smoke and gases through openings in fire rated walls and floors, specifically linear joints and openings for building service penetrations.

FP 505 should be applied over suitable backing materials to ensure correct width to depth ratio and to reduce shrinkage of the joint during hardening. FP 505 is a 2 hour rated intumescent sealant formulated with fillers that provide noise reduction.

FP 505 cures when it is subjected to atmospheric conditions, however it will retain a small degree of elasticity for joint movement. Under fire exposure, FP 505 creates a robust fire seal by the formation of a durable intumescent char.

The sealant has undergone tests to BS EN 1366-3 with additional guidelines from BS EN 1366-4 for fire protection joints and tested in accordance with BS EN ISO 8339: 2005 and BS EN ISO 9046: 2004 to demonstrate its suitability for use in internal conditions.