Abstract: A tile, made for example of leather, having a first face, a second face, side edges and a plurality of holes that bring into communication first face with second face. In a lining made with such tiles like this, the holes lead the air from below to above the tiles. To improve further the air flow through the tile, on the second face a plurality of grooves are made that extend from a central zone up to the side edges of the tile. This way, an air path is formed between the lining and the floor leading the air to holes and then into the room at the side of first face. A favorable exchange rate through a floor lining made with them is obtained, combined with a heat exchanger embedded in the floor.

Abstract: A tile, made for example of leather, having a first face, a second face, side edges and a plurality of holes that bring into communication first face with second face. In a lining made with such tiles like this, the holes lead the air from below to above the tiles. To improve further the air flow through the tile, on the second face a plurality of grooves are made that extend from a central zone up to the side edges of the tile. This way, an air path is formed between the lining and the floor leading the air to holes and then into the room at the side of first face. A favorable exchange rate through a floor lining made with them is obtained, combined with a heat exchanger embedded in the floor.

Abstract: A leather tile having a first face, a second face, side edges and a hole. In particular, hole has a desired shape and extends between first face and second face of tile. Also a plurality of holes, of desired shape, which define scripts, decorations, designs, etc., can be made, as well as no holes at all. The hole is filled with hardened resin in order to show, on first face, a portion of resin matching the hole same. The hardened resin extends from first face to second face up to lining completely the lower surface thereof. The resulting tile comprises a leather layer to which a layer of plastic resin of a certain thickness is integral and allows one to level the lower surface of leather layer and to level the overall thickness.