Firestopping mastic sealant



Suitable for dry internal use only.

Joint widths 0 to 35 mm linear; 30 to 150 mm movement details.

Depth to width ratios 1:1 walls and floors; 2:1 split wall seals.

Standard colours are white and grey. Can be over-painted using acrylic paints (must be fully cured before over-coating).

Tack free time 15 to 60 minutes, depending on temperature/humidity.


  • œTolerant to building movement
  • May be over painted
  • Fully tested for up to 240 minutes integrity and insulation
  • Optifire Identification
  • Tools off easily with water
  • Air pressure tested up to 2000 Pa

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