We have all PCI Products in the range. Special joint mortar for natural stone slabs Hardens without cracking, the joint does not tear or break. Sets quickly, washes quickly and after approx. Walkable for 6 hours, enables efficient work. Waterproof and frost-resistant, universally applicable indoors and outdoors. Hardening profile is largely temperature-independent; the washing time remains almost the same at both low and high temperatures. Does not cause any discoloration of the edge zones of sensitive natural stone. Temperature resistant from -20°C to +80°C. For heated screeds, balconies and terraces. For grouting natural stone slabs such as marble, travertine, granite, Solnhofen slabs etc. Keep out of the reach of children. Always read the label and product information.