Insulated and ventilated panel with multilayer protection, CE marked according to UNI EN 14509, 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 an anticorrosive and soundproofing thermoplastic coating (about 1.5 mm thick) 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);

(3) Laminated internal coating in fiberglass gel coat white with a thickness of 0.5 mm.

The covering element (1) must project at least 5 cm into the eaves in order to protect the head of the insulating panel (2); Between the covering element (1) and the insulating layer (2) there are ventilation channels that allow no free circulation of air. The micro-ventilation of the panel reduces the thermal load to the extrados of the insulator, improving the internal environmental comfort, moreover it avoids the excessive overheating of the covering, determining for the insulation and for the upper slab operating conditions more favorable to their reliability in time.