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Intumescent mastic

Intumenscent mastic comes in a 310ml cartridge and is used to seal gaps around fire doors, windows, cables, pipes, joints, voids and small holes in fire rated structures.

  • £4.44
  • excluding VAT
  • (£5.33 inc. VAT)
FREE Next Working Day Delivery
Delivered next working day if ordered before 2pm
Free 90 Day Returns
  • Product no.

Available in white, brown and grey (see options below), it can fill gaps up to 25mm wide with no slump and can be overpainted.

With up to 4 hours of fire resistance, our mastic is suitable for interior use and has a long shelf life

  • MPN
  • EAN
  • Google product category
    Home & Garden > Fire & Gas Safety
  • Colour
    white, brown, grey
  • Independently tested in accordance with BS476: Part 20 & 22: 1987
  • 4-hour fire resistance
  • For indoor use only
  • EN1366-4 LANTAC Building Control approved
  • NHBC Type Approval
  • Acoustic performance: Weighted Sound Reduction Index (RW) of up to 57db to BSEN ISO 140-3