NBS Source
Mapeflex Firestop 1200°C


  • 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.

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.


Single-component, asbestos-free, quick setting, rigid, silicate refractory sealing grout resistant to flames, high temperatures and fumes.

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.

General information




Pr_20_31_53_27 Epoxy resin groutsPrimary


F10/665 Pointing

F10/95 Repointing

Specification data - Epoxy resin grouts Enhanced data




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

Reaction to fire (EN 13501-1)

Class A1.


Sustainability Brochure

Sustainability Brochure

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