Sikaflex Self-Leveling Sealant Gray – 29 fl oz Cartridge (12 Pack) | Fast-Curing PU Concrete Joint Sealant

Overview

Sikaflex Self-Leveling Sealant is a premium, one-component polyurethane designed for horizontal expansion joints in concrete. It flows smoothly into cracks and gaps, creating a durable, flexible, waterproof seal. This gray sealant comes in a 29 fl oz cartridge, and the 12-pack is ideal for larger projects such as driveways, garages, warehouses, and patios.

Key benefits

• Easy versatile application — self-leveling on uneven surfaces, ideal for driveways, garages, sidewalks, and pavement
• Quick curing — tack-free in a couple of hours; final cure in less than a week; can be painted, sanded, or stained
• Waterproof and elastic — after curing, forms a moisture barrier while maintaining flexibility to accommodate joint movement
• Weather resistant — designed to withstand the elements without losing performance or appearance
• Paintable and sandable — blends with surrounding surfaces for a professional look

Real world uses

Seal horizontal joints in concrete surfaces where movement occurs, including driveways, sidewalks, patios, and warehouse floors. The 29 fl oz cartridge size supports larger projects, reducing downtime and delivering a neat, durable finish.

• Coating compatibility: once cured, it can be painted or stained to match nearby concrete
• Application tips: the narrow tip enables precise placement and clean lines

Notes

This product is designed to seal joints while remaining elastic; surface preparation and cure conditions influence results. It is intended for concrete joints in dry or humid environments and may require proper tooling for best results.