m2 of acoustic insulation against impact noise of floors in new construction using a 3.4 mm high-tenacity polyester felt anti-impact sheet joined to a bituminous protection, with high resistance to compression, tearing and puncturing, TEXFON type; overlapped using the self-adhesive tab intended for this purpose that is incorporated in the product; finished with 8 mm thick parquet-type flooring, laminate or similar, reduction of the overall impact noise pressure level ALw = 21 dB and overall standardised impact noise pressure level LnTw = 60 dB.