Firecement HT

Soudal Firecement HT 1500°C Sealant

Soudal Firecement HT is a sealing paste based on sodium silicate that can be used in conditions where temperatures can get extremely high – up to 1500°C. It is single component and easy to use, and cures to form a hard seal. Perfect for sealing applications in ovens, fireplaces, and other hot areas.

  • Sodium silicate sealing paste
  • Ready-to-use – no mixing required
  • No fragmentation, crumbling, or cracking after curing
  • Heat resistant up to 1500°C
  • Free of asbestos
  • Fire-rating of 120 minutes
  • NOTE: This product is not silicone based

310 ml cartridges, 15 cartridges / carton

Colours available


More Info


  • Ready-to-use
  • No fragmentation or cracking after curing
  • Heat resistant up to 1500°C
  • Free of asbestos
  • Fire-rating of 120 minutes


  • Sealing of joints and openings where high temperatures are possible
  • Sealing of stoves, ovens, fireplaces, furnaces, heating systems, central heating, barbecues etc.
  • Heat retardant sealing at existing constructions

Standards / Tests / Certificates

  • BS 476: Part 20 – Warringtonfire Research Report
  • Low-emitting Materials: Adhesives and sealants. SCAQMD rule 1168
  • USGBC LEED 2009 Credit 4.1: Low-emitting Materials – adhesives & sealants

Application method

Extrude / apply with standard caulking gun. Tool and apply extruded paste with spatula or putty knife. Calofer can be removed with water before curing.

Slightly moistening porous surfaces improves adhesion.


Brick, concrete, metals.


  • A slight warming of the heating installation during 12 hours after application prevents bubbleforming and improves structure.
  • Do not apply in situations where continuous water immersion is possible.
  • Not suitable for exterior applications with exposure to rain.
  • On joints between materials with different expansion coefficients, cracks can occur when temperature increases.
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