Insulated and ventilated multi-layered Deck Panel consisting of:

(1) Covering element in metal sheets, CE marked according to UNI EN 14782, consisting of a structural galvanized steel sheet (EN 10346) with a thickness of 0.50 mm (or 0.40 mm) protected in the upper face by a thermoplastic cover (about 1.5 mm thick) anticorrosive and soundproofing and a natural aluminum foil (or pre-painted aluminum), and in the lower face by a bituminous primer and a natural aluminum foil. To ensure the stability of the performance characteristics over time, the protection with an anticorrosive and soundproofing function, of a thickness of about 1.5 mm, must be positioned on the extrados of the sheet.

(2) Shaped insulating element in sintered expanded polystyrene with improved lambda closed cells containing graphite (reaction to fire Euroclass E, EPS 100);