Grout joints, caulks and sealants ARDEX JK - Quick mortar for tile joints in swimming pools €12.32 Quick tile grout for swimming pool tile joints. For sealing tile joints from 1 to 8mm. Specially for swimming pools. Passable in 90 minutes. White colour. Complies with EN 13888 CG2. For grouting or grouting tiles and screeds. Add to cart