The light grey colour recalls the natural oxidation process of the stone, a material that is under continuous transformation, changing colour, shape, and structure, and adapting itself to the evolution of natural phenomenon.

We offer the Grip (R11) finish in both 20mm Outdoors but also Indoors in 600x600x10mm. 

20mm thickness is slightly more preferred for outdoor spaces such as gardens, patios etc.

You can also use the Grip finish 10mm for Outdoor (which is cheaper) but if so they MUST be laid on a prepared concrete slab. UK winters are unpredictable with some severe frosts, laying on a slab is the preferred method; you must also use a suitable cement based tile adhesive when laying them outside if you go for 10mm.