AF JOINT is a rock-fiber slab designed to seal dilatation joints and grant them integrity and thermal insulation for 180 minutes. Any building and fire compartment needs some internal gaps to compensate the natural expansion of its rigid structures caused by temperature and load variations. In case of fire, these gaps are potential pathways for fire expansion and must be sealed with flexible fireproof materials.
AF JOINT is specifically designed to perform this task. Its flexible structure can compensate for dilatations/compressions up to 7.5% of the original volume while its chemical composition and its superficial coating grant to the joint EI 180 properties in accordance with the European Standard EN 1366-4.