Abstract: Formation of the mosaic is performed by joining a first sheet element made of plastic to a second sheet element made of wood, thus obtaining a bilayer laminate, which is subsequently cut into a plurality of elements. After an ageing treatment by abrasion, or by beveling, each element is placed internally of a template, a top surface of each element facing downwards at this point. A grid is glued onto the plurality of elements in the template. The mosaic thus formed is waterproofed and a mixture of sand and glue is deposited on a bottom surface of the mosaic.

Abstract: A strip for forming floor coverings, the strip being constructed in such a manner as to present an upwardly facing flat surface lying in a first horizontal plane and a downwardly facing structurally flat surface lying in a second horizontal plane, the strip being provided along at least two opposing edges with tongue and groove coupling elements formed integrally with the strip and cooperating with each other, the tongue and the groove present a plane of symmetry substantially inclined to the horizontal plane.