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Flexseal FR

A Fire Resistant Silicone Sealant formulated to provide a high degree of fire resistance in a variety of joint configurations.

  • Flexible
  • Up to 4 Hour fire rating 
  • Waterproof
  • Excellent un-primed adhesion to most building components
  • Meets ISO 11600 standard with the classification – ISO11600-F&G-25LM
  • Tested to BS EN 1366 part 4 at Warrington. Copy of report available on request.
  • Colour - Grey
  • Available in 310ml Cartridge
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Fortafix Flexseal FR Silicone Sealant is a one-part silicone sealant formulated to provide a high degree of fire resistance in a variety of joint configurations. It has been independently tested and achieves in certain joint configurations an integrity and insulation value in excess of 4 hours. Flexseal FR is suitable for sealing a wide range of construction and expansion joints in buildings, where compartmentalisation within the building is required to control spread of fire.It cross links at room temperature to give a flexible low modulus seal which will withstand movement of 25% in constant service throughout a wide temperature range.Suitable for Glass, Anodised and Mill Finished Aluminium, Steel, St.Steel, rigid PVC, Concrete and other porous surfaces. Once cured, the sealant offers superb long-term resistance to heat and fire as well as all other general weather elements.
Typical applications include; Expansion and construction joints in walls and cladding panels, sealing of service penetrations, roofing and conservatory applications, capping sealant for bead glazing, and general sealing work.
Please click below for this product's data sheet.

  Fortafix-Flexseal-FR-Silicone-Sealant.pdf

Please click below for this product's safety data sheet.

  FORTAFIX-FLEXSEAL-FR.pdf

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  • Made in the UK for 120 years