List of featured suppliers of SEALANTS Mastic: by Special Function: Intumescent BS EN 1366-3 on Building Products Index
Sealants and mastics with special function, intumescent BS EN 1366-3 refer to materials used in projects to fill gaps, joints, and seams in buildings and structures. These materials are specifically designed to expand when exposed to heat or fire, providing a barrier against the passage of smoke and flames. This helps to prevent the spread of fire and can also provide additional insulation against heat. The BS EN 1366-3 standard sets out specific requirements for the performance and testing of intumescent sealants and mastics in fire resistance applications.