Grès Porcelain stoneware is a ceramic with a compact, hard, coloured and non-porous body. The word “grès” means that the ceramic body of the tile is extremely vitrified, that is to say compact, hence the exceptional great resistance.
The result is a lean clay body, little refractory, fired in a kiln (at 1200-1400 C°) until it reaches a non-porous vitrification and a complete water-proofing.
Porcelain floor tiles are made by materials featuring the lowest water absorption levels, which means the quantity of water that the slab can absorb under certain conditions.
This feature (that is also one of the two parameters on which the EN ISO standards classification is based) also results in the highest level of bending strength, that is to say, the maximum tension that the material, subject to an increasing bending action, can bear before breaking.
Amongst the most significant features of grès porcelain stoneware there is also the high abrasion resistance, which means the resistance of the surface against the action related to the movement of bodies, surface or materials in contact with it.