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Single component, asbestos-free, quick setting, rigid, silicate refractory sealing grout resistant to flames, high temperatures and fumes. Ideal for making rigid seals in chimneys, ovens, radiators, barbecues, flues and fire-break walls. Also suitable for pointing or for installation layers on refractory bricks when building or carrying out maintenance work on elements in continuous, permanent contact with flames or heat up to 1200°C, with temporary peak temperatures up to 1600°C.

A soft paste in emulsion which forms rigid grout when the water contained within has evaporated off. The non-deformable grout contains sodium silicate and special mineral fillers which are completely free from hazardous toxic substances.

Not suitable for use on:

  • Dusty or weak (crumbling) surfaces.
  • Surfaces with stagnant water or with capillary rising damp. Damp substrates may be tolerated.
  • Joints subject to cyclical movements.
  • Surfaces exposed to frequent contact with rainwater or high levels of humidity.

General information
Specification data - Epoxy resin grouts
Product Reference

Mapeflex Firestop 1200°C

Standard product features


Silicates, resins, sodium silicate (alkaline) with inert minerals.



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