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SIDERISE LGS is a third party certified intumescent strip designed to seal junctions between building elements to prevent the spread of fire and smoke, providing up to 240mins fire resistance.

Part of the Certifire approved range of linear gap seals, these intumescent seals comprise a flame retardant acoustic foam core with an intumescent coating. In fire conditions they maintain a close fit to prevent the spread of cold smoke. On the fire side the foam compresses and is replaced by the expanding intumescent, preventing rapid fire spread into the joint. The non-fire side retains flexibility accommodating heat induced structural movement.

  • Supplied in 1 metre lengths, standard sizes available to suit voids up to 100mm; 2 and 4 hour fire ratings available.
  • Certifire approved - Certificate No. CF5386
  • Up to 240mins fire performance
  • Fully qualified acoustic performance
  • Prevents the passage of smoke
  • Accommodates service movement
  • Water resistant
  • Gap sizes up to 100 mm

General information

Carbon impregnated foam and intumecent


12 x 1000 mm

20 x 1000 mm

25 x 1000 mm

50 x 1000 mm

100 x 1000 mm

30 x 1000 mm

75 x 1000 mm

125 x 1000 mm

Uniclass 2015
Mineral wool fire stopping (Pr_25_80_81_51)Primary
Digital objects
PlatformCompatibleVersionCertified to
IFC2X3 2 1.3
Revit 2017 3 2.0
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