Intumescent strips

Expandable graphite Expandable graphite Inca (Sweden) Intumescent coating, intumescent seal, intumescent strips, and firestop collars... 

Adapting to technical progress - where new technology exists there is a requirement to adapt the control measure to take any progress into account, such as fitting intumescent strips to fire doors to enable them to present a more effective fire stop rather than relying on a larger door rebate. 

In addition to the fire resistance of the door and its assembly, it is also vital, in order to protect escape routes and prevent smoke damage to the building, that the door limits the spread of smoke. This is achieved by ensuring that the door effectively self-closes and is fitted with two types of seal an intumescent strip that expands when it becomes hot and forms a fire resisting seal around the door and a cold smoke seal which is normally in the form of bushes or a felt material, which prevents the movement of cold smoke. 

The recommendations arising from the findings would therefore relate to the provision of intumescent strips and where appropriate cold smoke seals, to bring the service riser doors/door sets up to British Standard 476 (Priority 3). 

During the practical risk assessment process it was noted that a number of service risers were insecure. That the doors to the risers were defective and were not fitted with intumescent strips and that the risers themselves were likely to act as a chimney due to the lack of fire compartmentation between each of the building s floors. 

Compartments and doors. The RP must take measures to ensure all fire resisting walls and doors are kept in good order, walls, ceilings and floors are not breached and fire doors have appropriate intumescent strips, cold smoke seals and closing devices [4.(1)(a)j. 

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