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.