Sealant Sika SIKAFLEX 11FC 300 ml white

Sika SIKAFLEX 11FC 300 ml white is a multipurpose polyurethane sealant formulated for bonding and sealing joints in construction and maintenance work. It provides elastic adhesion and remains flexible after curing, making it suitable for substrates commonly found in building envelopes and interior finishing. The 300 ml cartridge format is compatible with standard caulking guns and is intended for general-purpose sealing where a durable, elastic joint is required.

Advantages

Sikaflex 11FC cures to an elastomeric seal that absorbs typical movement in construction joints while maintaining adhesion to many materials. The product is paintable with compatible paints after skin formation, exhibits good workability for manual application, and forms a weather-resistant seal when used according to instructions. Its white color enables neat finishing on light-colored surfaces and in visible joints.

Suitable for

• Sealing window and door frames
• Filling gaps and cracks in interior and exterior joints
• Bonding trim, skirting boards and panels
• General repairs around buildings and maintenance tasks

Key specifications

• Type: Polyurethane-based elastic sealant
• Color: White
• Volume: 300 ml cartridge
• Application: Cartridge with manual or pneumatic caulking gun
• Paintability: Can be painted after skin formation with compatible paints
• Movement accommodation: Designed to tolerate typical joint movement in building applications

How to use

Ensure surfaces are clean, dry and free from dust, grease and loose material before application. Cut the cartridge tip and fit a suitable nozzle; apply with a standard caulking gun, extruding the sealant evenly into the joint. Tool the sealant within its skin time to achieve a smooth finish and to ensure contact with joint sides. Allow the sealant to cure undisturbed; curing time depends on joint dimensions, temperature and humidity. Follow standard safety precautions and local guidelines for ventilation and disposal.

Usage recommendations

For optimal performance, apply Sika SIKAFLEX 11FC at temperatures recommended by the manufacturer and use primer where adhesion tests indicate. Do not use on bituminous substrates, natural stone that may bleed, or on surfaces that are continuously submerged. For paint compatibility, test on a small area first and allow full cure before overcoating.