Abstract: A masonry system having a primary masonry unit with final coating and thermal and acoustic insulation, with several derivations. The masonry system guarantees the construction of a wall providing final finishing and thermal and acoustic insulation simultaneously. The system is based on a primary masonry unit having a coating layer in its outer face and an insulation layer which, depending on the version adopted, can be situated in the inner face thereof or in the outer face, covered by the final finishing layer in the latter case. The primary units present a tongue and groove fitting system which allows an easy and quick fitting, allowing the placement of these same units by wet or dry process. The masonry system further foresees secondary units and metallic reinforcements, to prevent phenomena of cracks and fissures and to improve the anti-seismic behavior of the wall.