Grey Basalt Staircase

The staircase requires a high degree of precision and know-how. As a competent partner, we assist you in full detail about the natural stone products which are best to the criteria of a staircase justice. For example, the resistance and thus also the fracture resistance plays a role. This results in minimum thicknesses and maximum spans. Crucial to the abrasion, the surface hardness. The internal structure will decide on the possible surface treatments and thus the slip resistance