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PROMASEAL® Fire Barriers are slabs of high density mineral wool with a white endothermic, ablative coating. Designed to limit the spread of fire through openings in fire resistant masonry or concrete walls and concrete floors where these are used for the passage of building and communication services.

General information
Specification data - Mineral wool slab insulation
Product Reference

PROMASEAL Fire Barriers

Standard product features


1200 x 600 x 50 mm.

Fire performance:

PROMASEAL® Fire Barriers have been shown to provide a resistance to fire in excess of four hours when tested to the principles of BS 476-20: 1987.

  • Single PROMASEAL® Fire Barrier 50 mm thick: 120 minutes fire resistance (integrity and insulation).
  • Double layer of PROMASEAL® Fire Barrier each 50 mm thick with an air gap between faces of not less than 30 mm: 240 minutes fire resistance (integrity and insulation).

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