| 摘要 |
Said improvements consist of the structuring of the closure on the basis of self-supporting support panels structured by means of a metallic sheet 2 provided with longitudinal ribs 3 which stiffen its structure and which constitute straightedges for fastening of the tiles 4, to which end said ribs 3 are oriented upwards, the metallic sheet 2 receiving, via its lower face, and securely, a thick layer 6 of an insulating material such as, for example, polyurethane foam. In addition, one of the aforesaid ribs 3 is located in correspondence with one of the edges of the support panel and the groove which it configures via its lower face is semi-emptied of insulating material so that on the sheet is defined a flange 7 for dovetail-type coupling between panels, which flange is superposed on the other edge of the contiguous support panel, said edge being provided with a raised profile 8 which fills the semi-groove of the first one. <IMAGE>
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