We all have PCI Products in the range. Special joint mortar for natural stone slabs Hardens without cracks, the joint does not crack or break out. Sets quickly, washes quickly and after approx. Walkable for 6 hours, enables efficient work. Waterproof and frost-resistant, universally usable 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. For joint widths from 1 to 8 mm. Always read the label and product information bef.