These are self-supporting insulated panels for wall and partition applications for industrial, residential and commercial buildings. The factory assembled insulated sandwich panels using PUF/PIR/Mineral-wool are single piece, prefabricated, factory made units consisting of an insulating layer between two sheets of Pre-coated GI/GL sheets of 0.5 – 0.8 mm thickness to produce straight-to-finish panels. The Metecno patented mechanism ensures precise interlocking, dimensional accuracy and eliminates the risk of air gaps and thermal bridging and joints are covered with butyl tape, sealants and flashings.