Kappa 3 - Roof panel. Dimensions: width mm 1000. Length: length upon request from continuous production process. Thicknesses (S): mm 30-35-40-50-60-80-100-120 panels of non standard thicknesses can be supplied upon request previous agreement on minimum quantities. Supports: galvanized steel, galvanized prepainted or plastified steel; stainless steel; natural, prepainted or embossed aluminium; copper. Flexible support: bitumen felt membrane (KAPPA 3 e KAPPA 5); aluminium thickness mm 0,08 (KAPPA 3 AGRI e KAPPA 5 AGRI); fiberglass and non standard materials available upon request, previous agreement on minimum quantities. Insulation through continuous foaming process of: Polyurethane resins (PUR) and polyisocianurate foams (PIR), density 39 ±2 Kg/m³. Declared value of thermal transmittance for a panel after 25 years of its installation, (Appendix C - EN 13165). Initial value of thermal conductivity: λ = 0.020. Protective treatments for external support available on request for external: polyester coating, atoxic pre-painted for food contact, silicone polyester, PVDF, thermoplastic Class A application of PVC plastic films or other films.