Flooring in double-layer vibro compressed concrete blocks CE marked, produced and checked according to the EN 1338 standard, patented model of rectangular shape of dimensions 12.5 x 25 cm, thickness 8 cm, finishing series DRAINING (double layer). The floors have a draining capacity of about 5% (480 l / min m2) for "running" laying and 9% (633 l / min m2) "herringbone" suitable to be filled with gravel 2/6 mm (according to UNI EN 13242). The particular double-layer finish is made with selected aggregates that offer resistance to abrasion, durability and coloration that last over time.