Litokol 5KG-11LB Litoelastic EVO Adhesive 11 lbs. Two-part epoxy-polyurethane reactive adhesive for ceramic tiles and natural stone. Two-part reactive adhesive. Part A consists of synthetic epoxy-polyurethane resins, inert fillers and organic additives. Part B consists of organic catalysts and fibers. Suitable for simultaneous gluing and waterproofing of any kind of ceramic tile and natural stone, even if unstable to moisture, such as green marble, pietra serena and slate on interior or exterior floors or walls, even over elastic, flexible substrates.