Grey Semi-Rapid Set Flexible Adhesive for Tiles & Natural Stone, 20kg 1-20mm Bed Thickness 2 Hours Pot Life 5 hours Set Time Terracotta, Ceramic / Porcelain / Mosaics Natural Stone / Flagstones Screeds / Concrete / Timber Underfloor Heating Swimming Pools / Wet Areas High Grab Non-Slip Interior / Exterior Delivery: 1-2 working days ROCATEX C2TE S1 Semi-Rapid Flex Grey is a single part, flexible wall and floor tile adhesive for fixing natural stone and tiles including ceramics, porcelain and mosaics to a variety of substrates. Suitable for interior and exterior use. 1-20mm Bed Thickness 2 Hours Pot Life 5 hours Set Time Suitable for Terracotta Each 20kg Covers Approximately 4-5m2 depending floor condition. Concrete / Timber Underfloor Heating Swimming Pools / Wet Areas Anti Stain Watermark Proof Internal / External Use