A facade or wall-cladding is normally made of materials resistant to climatic changes from one season to another. Because of that, the stone has to have a minimum quality of different physical parameters. Normally those are water-absorption, frost-resistance, bending strength, crushing strength and temperature expansion. In special cases there are also other physical parameters which might be important. Additionally, there are also different ways of installing a wall-cladding. The most known or used method is fixing with different type of anchors which are connected to the structure of the building. In some cases also gluing a kind of cement are being used.