Coated coverings for building roofs

Abstract

A coated covering with metallic structure for the roof of a building, comprising a plurality of panels (10) having a substantially quadrangular shape, each panel (10) having side edges (17, 18) parallel and opposite to each other, for the mutual connection between adjacent panels (10) in the longitudinal direction and for the formation of a joint (11) between each of said adjacent panels (10), wherein said side edges (17, 18) comprise folds (18a-b, 19a-b, 20a-b, 21a-b, 22a-b, 23a-b) at least partially symmetrical on two edges and further folds (24, 25, 26) formed on at least one side edge (17) and further folds (27, 28) on at least one other side edge (18), wherein said side edges (17, 18) comprise at least one bend at a fold (21) arranged horizontally and parallel to a mounting base (13), said covering further comprising at least one fixing bracket (12) configured to engage said side edges (17, 18).

Description

Technical Field

[0001] The present invention preferably, but not exclusively, relates to a high-performance metal covering for the roof of a building.

[0002] In particular, the metal covering according to the invention uses a plurality of metal plates that are adjacent to each other and connected by a special shape of their side edges.

[0003] These edges are secured to the underlying structure by brackets, and the system thus made forms a continuous cover that is easy and quick to install, durable, highly wind-resistant, and suitable for protecting the building below.

[0004] This invention is advantageously applicable to the field of roof coverings for buildings in general, and more particularly to the field of panel coverings with metal structures. Background Technology

[0005] In the field of architecture, various types of building coverings are known to be used. In some cases, such as in industrial buildings, public institutions, airports, or similar locations, the coverings consist of adjacent panels or slabs.

[0006] For large areas, such as industrial sheds, production facilities, or large infrastructure, roofing with large-area components (panels or flat panels) is common because it is faster to implement and less expensive.

[0007] The panels and slabs used for building coverings are prefabricated components with large areas, supplied directly to the construction site, ready for installation and equipped with all the components and fittings needed to achieve complete coverage.

[0008] These panels are made of various metals such as aluminum, copper, zinc, and steel, or plastic materials such as ABS, polycarbonate, and PVC.

[0009] The plates that make them up can have a variety of sizes, including length (from less than a meter to hundreds of meters) and width, which is usually no more than a meter, due to both static reasons and the width limitation of the starting lamination tape (also called roll).

[0010] In this field, it is also known that the side edges of a cover panel or plate can be joined in a variety of ways to achieve their joint, ranging from simple overlapping of edges to very complex geometries with drainage channels, thereby utilizing geometries suitable for special fixing systems to fix the surface to the underlying structure.

[0011] In the latter case, where a geometry suitable for a particular fixing system is used, the fixing bracket can be made of metal or plastic material, which avoids the need to perforate the plate and allows the plate to expand in the length direction.

[0012] Furthermore, the geometry of the flat plate and the choice of metal in production determine the fixed frequency along the length and the mechanical properties under concentrated positive loads (e.g., to support people walking), distributed loads (e.g., snow and wind), and loads such as typical wind lift, i.e., the upward thrust of wind.

[0013] To complete the system, the exterior of the flat panel has countless systems for fixing, with or without perforations, clamps, hooks, etc. These systems are made of various materials and are suitable for applying various accessories to the roof, such as snow protection devices, fall protection systems, solar panels, walkways, plants, etc.

[0014] An example of such a covering system is described in documents EP 0964114 and EP 0634535, which provide a system for attaching or constraining attachments to coated panels or plates used to cover buildings, which allows the overlapping edges of two adjacent panels to engage without perforating the panels / plates to which the components are applied.

[0015] According to the first solution, a clamping and hooking member is used on the joined edges of two adjacent panels, which can be secured by using fastening and restraining members. In this case, the clamping and hooking member is characterized by including at least one part adapted to allow restraint of attachments, such as solar panels or other components and attachments located on the cover.

[0016] In the second embodiment, the system includes multiple metal plates and several mounting brackets. The metal plates are joined together along their side edges, the shape of which defines laterally outward first longitudinal protrusions. The mounting brackets are used for anchoring to the roof. Each bracket includes at least one longitudinal groove for receiving the first longitudinal protrusions of adjacent panels in a snap-fit ​​coupling manner, such that the first longitudinal protrusions have opposing upper surfaces that are at least partially flat and substantially parallel or slightly inclined to facilitate panel retention and increase the separation load that would cause the edge portions to detach.

[0017] Despite the good performance characteristics of some systems, the technology has proposed continuous improvements in the geometry of the flat plate edges and the means of interconnection, as in the present invention, which is also designed in response to the increasing demand for higher-performance components for covering buildings due to the greatly increased occurrence of typhoons and hurricanes caused by severe climate change, resulting in roofs being blown away, and new building and structural requirements. Summary of the Invention

[0018] The present invention aims to provide a metal coating covering for the roof of a building, which uses a plurality of metal plates adjacent to each other and connected by a special shape of their side edges, which can improve the overall performance of the system to meet the above requirements.

[0019] In particular, the present invention provides a metal-coated covering for the roof of a building, wherein flat panels are positioned adjacent to each other, the flat panels including edges fixed to the underlying structure by specially shaped supports, and the system is thus made to form a continuous covering that is easy to install quickly, durable, highly wind-resistant, and perfectly suited for protecting the building below.

[0020] The main objective of this invention is to significantly improve the performance of in-situ cover systems by increasing the distance or span between consecutive supports along the length of the flat plate, and / or by providing greater wind-uplift resistance, i.e., resistance to the upward thrust of wind.

[0021] Another object of the present invention is to improve the sliding of the plate to the corresponding fixed support so that the plate itself can expand freely in the longitudinal direction, thereby enabling the manufacture of even very long plates (far exceeding 100 meters) without damaging and limiting wind lift as occurs in existing systems.

[0022] Another object of the present invention is to minimize the number of creases in the contours of the edges of panels placed opposite each other, so as to achieve greater cost-effectiveness in production.

[0023] Another object of the present invention is to maintain these creases on the contours of the edges of panels placed opposite each other with a sufficiently wide radius of curvature so as to enable the use of hard metal alloys, such as aluminum alloys, on the one hand to avoid the risk of forming cracks that could lead to material breakage, and on the other hand to avoid the possibility of certain types of whitening of the surface coloring, which can occur, for example, when using PVDF coatings, which may involve so-called whitening, which is particularly undesirable in dark coloring.

[0024] Another object of the present invention is to facilitate the installation of external clamps without perforating the plate, while ensuring its great resistance to lateral stress, longitudinal stress and tensile stress without increasing the friction between the plate and the fixed bracket.

[0025] This is achieved through a metal-structured roof covering for the building, comprising multiple metal plates adjacent to each other and connected by special shapes on their side edges, and locked by special supports. Attached Figure Description

[0026] Further features and advantages of the invention will become apparent with the aid of the figures shown in the accompanying drawings, and by reading the following description of embodiments of the invention provided by way of non-limiting example, wherein:

[0027] Figure 1 An axonometric perspective view of three coated plates according to the invention is shown, the three coated plates being connected to each other and connected to the lower surface by a bracket shown on the front;

[0028] Figure 2 Details of the two edges and two coated plates according to the invention are shown, which are placed opposite each other and held in a holding position by interlocking;

[0029] Figure 3 A perspective front view of three coated plates according to the present invention is shown, which shows the connection between the plates and the lower structure (not shown);

[0030] Figure 4 and Figure 4 'This is a schematic diagram of a portion of one of the coated plates according to the invention, having opposing edges, each edge having a geometry complementary to each other to allow engagement between plates placed opposite each other; to allow engagement between panels placed opposite each other;

[0031] Figure 5 An axonometric perspective view showing two edge portions of two different coated panels placed opposite each other and positioned at a certain distance (i.e., before joining).

[0032] Figure 6 The image shows a front view of the edges of two distinct adjacent panels placed opposite each other before they are joined.

[0033] Figure 7 An axonometric perspective view showing one of the supports used to securely hold the edges of the joined panels and fix them to the lower structure (not shown);

[0034] Figure 8 and Figure 9 It is a detailed front view showing the interpenetration of the tangible outlines of the two opposing edges of the plate before and after the introduction of the locking bracket;

[0035] Figures 10 to 14 Schematic diagrams illustrating other possible embodiments of the invention;

[0036] Figure 15 This illustrates another possible implementation involving the connection between the flat panel and the sandwich panel. Detailed Implementation

[0037] Referring to the attached diagram, especially... Figure 1 , Figure 1 This refers to a coating covering for the roof of a building, having a metal frame defining a first plate 10, while 10' and 10'' represent adjacent plates.

[0038] Each plate 10 has a basic rectangular construction, illustratively, about 0.5 meters wide and can be much longer than 100 meters. Due to its specific construction, the plate can be made of a hard metal alloy, such as aluminum.

[0039] The plates 10 are designed to be joined together to form the entire cover. For this purpose, each pair of joined plates is coupled to each other to form a longitudinal joint 11.

[0040] The connecting element of this joint 11 is formed by the geometry of the edges of the plates held together by interpenetration and fixing bracket 12, which engages with the two adjacent plates and ensures that the plates are fixed to the underlying structure (not shown).

[0041] The fixed brackets 12 are arranged according to the design and, under normal, but not in every case, are aligned laterally in each joint 11 between the plates 10, so that the distance is consistent with the width of the plates, and longitudinally aligned with the distance consistent with the support of the underlying structure (not shown herein).

[0042] Joint 11 further ensures the roof's airtightness against water and air penetration. The described system is adapted longitudinally to the length of the flat plate and laterally to numerous coupled flat plates, forming a single continuous surface constituting the entire covering.

[0043] according to Figure 7 In the embodiment shown, the fixing bracket 12 includes a body typically made of plastic, metal, or a combination of these materials or other materials, the body being typically defined by a flat base surface 13 supported on a substructure of the roof that is fixed to the fixing bracket 12.

[0044] The mounting bracket 12 includes two holes 14 that form a receiving portion for a fixing element (typically a screw or other suitable element) of the lower structure.

[0045] according to Figure 7 In the embodiment shown, the fixing bracket 12 has a central frontal axis of symmetry and a shape capable of fixing two connected flat plates 10.

[0046] The shape of the fixing bracket 12 defines two opposing grooves 15 and 16, which are formed by two parts 15' and 16' that protrude upward and are folded to face each other in a mirror manner toward a common intermediate plane of symmetry.

[0047] The lower portions of the two recesses 15 and 16, positioned mirror-image relative to a common intermediate plane of symmetry, are horizontal and parallel to the base surface 13, while the geometry of the higher portions has additional upward indentations 15a and 16a at their ends relative to the intermediate axis. Indentations 15a and 16a are designed to receive the corresponding portions of the plate only during the wind lift phase. These indentations 15a and 16a determine optimal performance related to wind lift, i.e., the upward thrust of the wind.

[0048] refer to Figure 4 In the embodiment shown, each individual plate has two opposing side edges 17 and 18, which are only partially symmetrical to each other between the first crease (the proximal end relative to the central axis of the plate) and the sixth crease.

[0049] according to Figure 4 and Figure 8 In the illustrated embodiment, the opposing side edges 17 and 18 of each plate include creases 18a, 19a, and 20a formed on side edge 17, and corresponding creases 18b, 19b, and 20b formed on side edge 18, which are symmetrical to each other and conform to the geometry of the fixing bracket 12. Figure 4 and Figure 7 As shown, the protrusions corresponding to the creases 21a and 21b of the plate are received within the grooves 15 and 16 of the fixing bracket 12. However, the plate does not have additional indentations 15a and 16a on the bracket on the other side. These indentations only abut against the symmetrical creases 21a and 21b of the plate during the rotation of the corresponding portions during the wind lifting phase.

[0050] Still symmetrically, creases 22a and 22b on the side edges 17 and 18 of the plate respectively bring the plate back to a substantially vertical position in an upward direction. (As...) Figure 8 As shown, after creases 22a and 22b and before creases 23a and 23b, the opposing side edges 17 and 18 of the two adjacent plates become parallel, opposite and substantially attached to each other on the vertical portion.

[0051] Finally, the two creases 23a and 23b on the side edges 17 and 18 of the plates are also substantially symmetrical. These two creases cause the two adjacent plates to extend horizontally outward relative to the mid-plane of the joint 11.

[0052] The portion between creases 22a, 22b and 23a, 23b can be fitted with an external securing system to attach accessories such as snow protection devices, fall protection systems, solar panels or other accessories.

[0053] Because the two plates are attached together, it allows for very effective and durable locking through an external clamp (not shown) that resists both longitudinal and upward vertical stresses, without the need to perforate the plates.

[0054] When clamped, the clamp does not deform the plate or lock it in the support bracket, allowing for free longitudinal expansion even in the case of plates of considerable length.

[0055] The geometry of the two sides then differs.

[0056] according to Figure 4 In the embodiment shown, on the side edge 17, after the crease 23a, the plate 10 extends upward through the crease 24 and then forms a curve of about 180° at the crease 25, which covers the side edge 18 of the opposite plate when joined in the joint 11.

[0057] Finally, the side edge 17 of the plate 10 has a crease 26 at its end, which attaches to the crease 27 of the opposite plate when it is joined to the longitudinal joint 11.

[0058] The coupling between creases 26 and 27, which serve as a seal, utilizes the elasticity of the construction material of the flat plate and represents an element with excellent waterproof sealing performance. This is because the outer surface exposed to the pressure determined by the rising water level pushes the side edge 17 and the last crease 26 against crease 27, with an inherent positive cohesive mechanism: the greater the pressure, the better the seal.

[0059] Still referencing Figure 4 After crease 23b, the side edge 18 of the plate 10 extends with crease 27 and finally extends upward to end crease 28. Crease 27 is opposite to crease 26 of the opposite side edge 17, and crease 28 is opposite to the inside of crease 25 of the opposite side edge 18.

[0060] according to Figure 8 In the embodiment shown, at the crease 25 of the side edge 17 of each plate 10, the last two creases 27 and 28 of the side edge 18 define the formation of the channel 29, which is located in... Figure 9 As can be seen, this channel is specifically designed to collect residual water that may have seeped into the coupling creases 26 and 23b and to transfer the residual water to the end of the plate.

[0061] like Figure 4 and 7As shown, the protrusions formed by the creases 21a and 21b of the flat plates housed in the grooves 15 and 16 of the fixed bracket 12 are substantially horizontal. The upward thrust of the wind acts on the flat surface of the middle portion of the flat plate 10 and on the joint 11 formed by the coupling of the opposing side edges 17 and 18 of the two adjacent flat plates. This upward thrust has a component relative to the end portion of the joint 11, and the direction of this component is inclined upward from the bottom at the center of the joint relative to the horizontal axis of the grooves 15 and 16.

[0062] This component determines the rotation of the portion of the plate from crease 18a to crease 22a. Figure 8 Rotate clockwise to the left of the symbol marked by the letter 'b', and... Figure 8 The right side, marked by the letter 'a', rotates counterclockwise. This rotation determines the containment of creases 21a and 21b within indentations 15a and 16a.

[0063] according to Figure 9 In the embodiment shown, the two vertical portions between creases 22a, 22b and creases 23a, 23b are attached to each other in the coupled joint to prevent creases 21a, 21b from coming out of the grooves 15 and 16.

[0064] Therefore, the sealing limitation of the system of the present invention against wind lift or the upward thrust of wind is determined only by the resistance of the fixed bracket 12 (which is extremely high if it is made of metal) and the resistance of the material used for the plate.

[0065] Therefore, increasing the thickness of the metal or using very tough metals, especially aluminum, steel or other alloys, can proportionally increase the resistance of the entire system.

[0066] Furthermore, according to the solution of the invention, interference stress is only generated between the plate 10 and the fixed support 12 during moments of mechanical stress, such as during meteorological events with extremely strong winds. This leaves complete freedom between the plate 10 and the fixed support 12 under normal conditions and significantly improves the longitudinal sliding required for the free thermal expansion of the plate, even in the case of very long plates.

[0067] The plate can be installed on the lower structure in the following steps: After the first plate is installed on the side edge 17, the fixing bracket 12 is manually coupled to the side edge 18 of the first plate and then fixed to the lower structure with screws (not shown in the figure); subsequently, the subsequent plate is brought close to the side edge 18 of the installed plate with its side edge 17, so that the simple pressure of the side edge 17 at the fixing bracket 12 forms a snap-fit ​​using the normal elasticity of the material used.

[0068] Repeat the process until the roof is fully assembled. Disassembly is performed in the same manner, but in reverse order.

[0069] It should be noted that, unlike the stress of wind that occurs simultaneously on both sides of the joint 11, the assembly (and disassembly) steps are performed one at a time on one side of the plate, otherwise they would be prevented because the two vertical portions between creases 22a, 22b and creases 23a, 23b are interdependent, thus preventing creases 21a, 21b from coming out of the grooves 15 and 16.

[0070] according to Figure 10 In another embodiment shown, a different bracket 30 is used instead of the fixed bracket 12. This bracket 30 is equipped with a magnetic system suitable for simplifying the assembly and disassembly of the flat plate, as described below.

[0071] Figure 11 An exploded view of the bracket is shown, which consists of three components: a base 31, a rotating body 32, and a ferromagnetic cylinder 33. Figure 12 A perspective view of the support 30 is depicted. The base 31 is used to accommodate the side edge 18 of the plate, as shown. Figure 8 and Figure 9 As shown. In fact, the geometry of this side is basically the same as that of the fixed bracket 12.

[0072] The base has two holes 34 and a flat surface 35, which are connected to Figure 7 The details of the holes 14 and the base surface 13 of the fixing bracket 12 are identical. These holes are used to accommodate fixing screws for fixing to the lower structure (not shown). On the opposite side of the bracket, there is a semi-circular receiving portion 36, whose axis is parallel to the flat surface 35 and parallel to... Figure 1 The direction of the joint 11.

[0073] The semi-circular receiving portion houses the cylindrical body 37 of the rotating main body 32. The upper structure of the rotating main body is similar to... Figure 8 and 9 The upper structure of the fixing bracket 12 on the side edge 17 of the receiving plate is basically the same. By expanding the space between the portions 15' and 16', the rotating body 32 can rotate about the axis of the cylinder 37 to facilitate the insertion and removal of the end of the plate, i.e., the steps of assembling and disassembling the system, especially the steps of receiving the creases 21a and 21b in the grooves 15 and 16.

[0074] The base 31 and the rotating body 32 have vertical holes 38a and 38b, which are substantially perpendicular to the axis of the semi-circular receiving part 36 and the axis of the cylinder 37. The ferromagnetic cylinder 33 is received in the vertical holes 38a and 38b.

[0075] Before assembly, when the system is turned on, the rotating body is in... Figure 13The ferromagnetic cylinder 33 occupies only the vertical hole 38b of the rotating body 32 without locking the rotation. After system assembly, the component 32 rotates to press the inserted plate until it is in position. Figure 14 The position is such that the ferromagnetic cylinder 33 descends and occupies the vertical holes 38a and 38b, preventing the rotating body from rotating in the opposite opening direction. From Figure 14 Location to Figure 13 The positional shift can be achieved by applying a magnet (not shown) from the outside, which causes the ferromagnetic cylinder 33 to rise, thereby enabling the rotating body 32 to rotate and resulting in the removal of the side edge 17 of the plate.

[0076] according to Figure 15 In the embodiment shown, the flat plate can be mounted on a custom-designed sandwich panel 40 and supported by appropriate brackets that can be held in place by the insulating mold of the sandwich panel or that can be fixed to the lower structure.

[0077] In this configuration, the plate 10 is not glued to the insulation material, but is actually installed as previously described, moving vertically from above. The only difference in profile is the absence of creases 18a, 18b, 19a, and 19b, as these are not necessary in this application.

[0078] It should be noted that these explanations are merely examples of the patented system, and various sizes and tilts can be freely changed, customized, and set.

[0079] Furthermore, the attached figures ideally show a plate system, each plate having side edges 17 and 18, but this can be reversed on both sides, or a completely symmetrical plate with side edges 17 on both sides can be conceived, which is coupled to a symmetrical plate with side edges 18 on both sides, these plates being installed alternately.

[0080] The present invention has been described above with reference to preferred embodiments and two variations thereof.

Claims

1. Coated covering with metallic structure for the roof of a building, comprising a plurality of panels (10) having a substantially quadrangular shape, each panel (10) having side edges (17, 18) parallel and opposite to each other, for the mutual connection between adjacent panels (10) in the longitudinal direction and for the formation of a joint (11) between each of said adjacent panels (10), characterized in that said side edges (17, 18) comprising at least partially symmetrical creases (18a, 18b, 19a, 19b, 20a, 20b, 21a, 21b, 22a, 22b, 23a, 23b) on two edges and further comprising other creases (24, 25, 26) formed on at least one side edge (17) and further creases (27, 28) formed on at least the other side edge (18) and configured to interlock with said other creases (24, 25, 26), said covering being further characterized in that it comprises at least one fixing bracket (12) configured to engage said side edges (17, 18); said fixing bracket (12) having at least two mutually symmetrical grooves (15, 16) and mutually symmetrical notches (15a, 16a); wherein said side edges (17, 18) comprise at least one bend defined by a crease (20a, 20b) overlying some first creases (21a, 21b) in order to accommodate said fixing bracket (12); said grooves (15, 16) of said fixing bracket (12) being respectively defined by two portions (15', 16') which project upwards and are partly folded downwards in the direction of the space between said grooves (15, 16) themselves in order to define said notches (15a, 16a) which extend upwards; wherein said grooves (15, 16) of said fixing bracket (12) extend in the horizontal direction and wherein said notches (15a, 16a) of said grooves (15, 16) accommodate said at least one bend formed by said first creases (21a, 21b) of said side edges (17, 18) of said panels respectively, in order to engage said first creases (21a, 21b) to compensate for the rotation due to the stresses caused by wind uplift.

2. Coated covering with metallic structure for roofs of buildings according to claim 1, characterized in that, It comprises a plurality of said fixed supports (12) configured to connect each joint (11) to the underlying structure; each fixed support (12) comprises a body whose configuration is defined by a flat base surface (13) which, in use, is supported on said underlying structure of the roof, which, in use, is fixed by means of a fixing element passing through a hole (14), said fixed support (12) is symmetrical with respect to an intermediate plane of symmetry perpendicular to said flat base surface (13) and is shaped so that two consecutive panels (10) can be fixed by means of said first creases (21a, 21b) which are inserted in respective opposite grooves (15, 16) formed by said horizontal portions (15', 16') and in said notches (15a, 16a) which project upwards and are mirror images of each other with respect to said intermediate plane of symmetry.

3. The coated covering with metallic structure for roofs of buildings according to claim 1, characterized in that, Said side edges (17, 18) are mutually symmetrical from an initial crease (18a, 18b) close to the central portion of the panel to a sixth crease (23a, 23b).

4. The coated covering with metallic structure for roofs of buildings according to claim 1, characterized in that, It comprises symmetrical creases (22a, 22b) respectively provided in said side edges (17, 18) of the panel, which bring said edges of the panel back to a substantially vertical position having an upward direction and substantially adjacent to a subsequent symmetrical crease (23a, 23b).

5. The coated covering with metallic structure for roofs of buildings according to claim 1, characterized in that, Said side edge (17) of the panel (10) extends upwards from one crease (23a) to another crease (24) and then forms a curve of 180° at a further crease (25) which, when joined in said joint (11), covers said side edge (18) of the opposite panel.

6. The coated covering with metallic structure for roofs of buildings according to claim 1, characterized in that, Said side edge (17) of the panel (10) has, at its end, a further crease (26) which, when joined in the longitudinal joint (11), adheres to a further crease (27) of the opposite panel.

7. The coated covering with metallic structure for roofs of buildings according to claim 1, characterized in that, Said side edge (18), when joined in the joint (11), defines, at said creases (25, 26), a channel (29) suitable for collecting residual water which can penetrate through the coupling of the creases (26, 27).

8. Coated covering with metallic structure for roofs of buildings according to any of claims 1 to 7, comprising a further bracket (30) in place of the fixed bracket (12), said further bracket (30) being suitable for engaging the side edges (17, 18) of the adjacent slabs (10), wherein said further bracket (30) has at least two mutually symmetrical grooves (15, 16) and mutually symmetrical indentations (15a, 16a), wherein said grooves (15, 16) are respectively defined by two portions (15', 16') which project upwards and are folded from the bottom of the indentations in a direction which is mutually mirrored parallel to the median plane of symmetry, wherein said grooves (15, 16) of the further bracket (30) are horizontal, wherein said at least one curve formed by a first fold (20a, 20b) which is completely horizontal and parallel to the base (31) of the bracket can be housed in said grooves, and wherein said indentations (15a, 16a) are suitable for housing, during rotation due to stresses caused by wind uplift, said at least one curve formed by a further first fold (21a, 21b) respectively provided at the end of the slab, characterized in that, Said portion (16') joined in the respective crease (20a) of said edge (17) of the panel (10) is formed with a rotating body (32) having a cylindrical portion (37) which rotates in a housing (36) having a semi-cylindrical shape formed in a base (31) of said further support (30) having an axis parallel to the direction of jointing of two consecutive panels (10).

9. Coated covering with metallic structure for roofs of buildings according to claim 8, characterized in that, Said base (31) and said rotating body (32) comprise vertical holes (38a, 38b) perpendicular to the axis of said semi-cylindrical housing (36) of the base and to the axis of said cylindrical portion (37) of the rotation and suitable for housing a ferromagnetic cylinder (33).

10. Coated covering with metallic structure for roofs of buildings according to claim 9, characterized in that, Said rotating body (32) is able to rotate around the axis of said cylindrical portion (37) to move from an open position suitable to allow the insertion of the lateral edges (17) of said tablet (10) to a closed position for fixing and keeping locked said tablet (10) due to the presence of said ferromagnetic cylinder (33) simultaneously housed in said vertical hole (38b) of said rotating body (32) and in said vertical hole (38a) of said base (31).

11. Coated covering with metallic structure for roofs of buildings according to claim 10, characterized in that, Said ferromagnetic cylinder (33) is also able to be released by decoupling said tablet (10) by a magnet external to said tablet, so as to be located only in said vertical hole (38b) of said rotating body (32), thus releasing from said vertical hole (38a) of said base (31), and so as to enable the rotation of said rotating body (32) and the decoupling of said tablet (10).

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