intumescent fire mastic

Description

Intumescent mastic fireproofing: An Intumescent Fire Retardant Acrylic Sealant is one part, ready to use sealant designed for internal perimeter pointing of fire rated door and window frames where the integrity of the firewalls or partition needs to maintain. Intumescent qualities enable the material to swell under heat conditions, producing a fire and smoke resistant seal. Used for internal perimeter pointing of fire rated doors and window frames. Also used for sealing joints, irregular holes in fire walls and for filling gaps between pipes and services that penetrate fire walls and partitions.

Installation

Clean all joins of loose dirt, dust, old sealants and other contaminants that could impair adhesion. Surfaces should be cleaned and degreased by wiping with a safe solvent impregnated cloth.

Do not apply in temperatures below 5 degrees centigrade. When sealant is used in a joint configuration masking tape should be used to prevent contamination to adjacent substances and ensure a neat sealant line.

Remove the masking tape immediately after tooling. Tool the joint within 5 minutes of application to give a smooth professional finish.

Typical Properties

  • Slump : Nil
  • Shrinkage : Approx 12%
  • Staining : Nil
  • Tack Free Time : 30 - 45 minutes
  • Water Resistance : Good when fully cured
  • UV Resistance : Good
  • Joint movement : Plus / Minus 7.5%
fire

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