Heat and sound insulating structure for boarding or other non-loadbearing wall

A heat and sound insulating structure for boarding or other non-loadbearing wall of a premises, comprising in combination an inner first metal sheet for facing toward the interior of said premises and a second metal sheet, a heat insulating panel, said sheets having ribs projecting into the panel and intermediate portions between the ribs, the ribs of the first and second sheets being perpendicular to one another, a substantially 2-4 mm thick core of sound insulating material and a solid and thin third metal sheet, one of said second and third metal sheets being an interposed metal sheet interposed between the core and the heat insulating panel, the heat insulating panel, the core and the interposed metal sheet being in adjoining relation to one another in a sandwich assembly, the heat insulating panel being in adjoining relation to one of said first and second metal sheets, the first and second metal sheets, the core, the third sheet and the heat insulating panel being held assembled, the heat insulating panel substantially filling any space between the interposed metal sheet and the adjoining one of the first and second sheets, the intermediate portions of each of the first and second sheets having a given width and the ribs of each of the first and second sheets having a width and a depth which are each a minor fraction of the given width of the intermediate portions thereof, the core of sound insulating material being in fully adjoining relation to at least one of said metal sheets without empty spaces therebetween, and the heat insulating panel being in fully adjoining relation to at least one of said metal sheets without empty spaces therebetween.