Patent ID: 8006452

Claim:
An insulating panel to make outer surfaces of buildings, comprising a first sheet of rigid material, having at least one plurality of substantially parallel ribs that rise from a general plane of a respective face of the panel, a second sheet of rigid or semi-rigid material, a layer of insulating material between the first and the second sheet, and at least one auxiliary panel unit, resting and supported at least at, or close to, two opposed edges of said unit on two main ribs of said plurality of ribs, such that said auxiliary panel unit extends between said opposed edges at a distance from said general plane of the insulating panel, wherein said insulating panel is provided with retention means to retain said unit in position above said insulating panel, wherein said retention means comprise one or more quick-fit retention members, each comprising an engagement portion to retain said unit in a position thereof resting over the insulating panel, each retention member being adapted to be anchored in a quick manner to said insulating panel without the need to make holes in the insulating panel and/or in a structure of said auxiliary panel unit for engagement of fixing elements, wherein said plurality of ribs includes at least one auxiliary rib extending intermediate to, and spaced apart from, two said main ribs, on which auxiliary rib at least one of said quick-fit retention members is anchored, and wherein each retention member and the respective auxiliary rib comprise respective coupling parts having complementary transverse sections, so as to enable a shape coupling of said retention member over said auxiliary rib with possibility of sliding relative to said auxiliary rib, but without the possibility of separation of the retention member from said auxiliary rib.