AIS FR Acrylic sealant - FP 508 is designed to prevent the spread of fire and smoke through joints and openings in fire rated walls and floors including openings formed around building service penetrations. FP 508 will also maintain the acoustic design performance in walls and floors.
FP 508 cures when it is subjected to atmospheric conditions, however it will retain a degree of elasticity for joint movement. Under fire exposure, FP 508 creates a robust fire seal by the formation of a durable intumescent char.
FP 508 can be used with a suitable filling material, i.e. stone wool or AIS backing material in order to secure correct width to depth ratio and to reduce the shrinking of the sealant during curing. Minimum depth and maximum width of the joints are included in the installation instructions. Thermal activation takes place at about 180°C when the material will expand (intumesce) and prevent the passage of fire and smoke for periods up to and beyond 4 hours.
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.
| Condition | Ready for use, acrylic based filler |
| Specific gravity | 1.56 – 1.60 |
| Flash point | None |
| Reaction to fire | B – s1, d0 |
| Air permeability | Air, smoke and gas tight tested to EN 1026: 2016 |
| Expansion in fire | 1 : 2-3 |
| Non-sticky | Max. 75 minutes |
| Film forming | Max. 25 minutes |
| Totally hardened | 3 to 5 days depending on thickness and temperature |
| Flexibility | 12.5% in mortar/concrete/masonry to EN ISO 9046 |
| Durability | Z2 intended for use in internal conditions with humidity classes other than Z1, excluding temperatures below 0 °C |
| BWR 3 | Use category IA1, S/W3 |
| Thermal conduct. | 0.845 W/mK (± 3%) @ 20mm depth |
| Storage | 18 months stored in unopened cartridges. To be stored in temperatures between +10 °C and +30 °C |
| Working life | 30 years |
| Service temp. | -20 to +70 °C |
| Application temp. | +5 to +30 °C |
| Compatibility | Suitable for use with most materials, but should not be used In direct contact with bituminous materials |
| Limitations | Should not be used in permanently damp areas or in joints with high movement |
| Classification | Sealant for fire rated joints and penetrations class EI 240 |
| Standard colours | Standard white, pure white, grey or red. Different batches may have minor colour deviations. |
| Colour codes | White: RAL 9002 / NCS S1002-Y Grey: NCS: S5500-N |
| Packaging | Box containing 25 foils/cartridges each 300/310 ml |
