Partition Head Fire Barrier

Fire and smoke stop for large gaps above partitions and masonry walls.

Manufactured from foil faced high density Rockwool stone wool and provides a fire barrier above fire rated metal frame partitions, fire rated timber partitions and masonry walls or in slabs suitable for cutting on site.

Supplied with a clip system to prevent the possibility of the barrier being dislodged and therefore ineffective in a fire situation. For voids over 250 mm link straps are supplied in addition to clips in order to restrain lateral movement of the partition head. No mastics or sealants required.

Fire performance to BS 476-20:

  • 240 minutes (maximum), assessed by Warrington Fire Research Centre.
  • Non-combustible to BS EN 15301-1: Classified A1.


Ozone depletion potential of zero, no CFCs or HCFCs used in manufacture.


100–600 mm. Fire Stop Strip available for voids less than 100 mm.

General information

Uniclass 2015

Pr_25_80_81_51 Mineral wool fire-stoppingPrimary


P12/360 Mineral wool rigid batts

P12/40 Mineral wool rigid batts

Specification data - Mineral wool fire-stopping

Product Reference

Partition Head Fire Barrier


50 mm

30 minutes fire resistance.

75 mm

60 minutes fire resistance.

100 mm

120 minutes fire resistance.

100 mm EHD

Extra high density barrier with lap joints, 240 mm fire resistance.


Link straps

For voids over 250 mm.

Manufacturer's standard

Clip system.

Standard product features


1000 mm.

Product Options


Thickness is measured as the distance between one compartment and the next, which the fire stop or barrier is separating.

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