Roofing tile

Abstract

The subject of the utility model is a steel roofing tile (10) with a reeded surface with three trapezoidal protuberances (7, 9a, 9b), wherein the central trapezoidal protuberance (7) divides the steel roofing tile (10) into two equal fields (8a, 8b) and the outer surface (5) of the steel roofing tile (10) on the side of the lower edge (2) is terminated by a descending fold (12), the surface of which is perpendicular to the surface of the steel roofing tile (10), and on the side of the upper edge (1) there is a step (13), the shape of which matches that of the fold (12) in the lower edge (2) of the steel roofing tile (10). Five trapezoidal indentations (12a-12e) are formed in the lower edge (2) of the steel roofing tile (10), formed as a descending fold (12), with the trapezoidal indentations coinciding with the position of the trapezoidal protuberances. In the lateral part (15) of the steel roofing tile(10), there are mounting sockets (15a, 15b) in the shape of an extended V located centrally at the height of the two indentations in the centre of each field (8a, 8b) of the steel roofing tile (10). Thanks to the construction used, the steel roofing tile can be laid in two ways, i.e. in a linear manner and brick-like manner.

Description

[0001] The utility model relates to steel roofing tile.

[0002] European application EP 0155968 A1 shows a metal roof cladding element according to the preamble of claim 1.

[0003] From a Chinese utility model CN203808378 U application is known a roof panel construction with vertical edges, with a concealed bracket with an N-shaped buckling and cover strip fastening. The roof panel construction can improve the efficiency of roof fastening, is simple in and convenient in installation.

[0004] Korean utility model KR 200351167 Y1 discloses systems constructed from a main roofing connecting structure, wherein one end of the roof panel includes the formation of an insertion groove and the other end of an adjacent roof panel includes an end portion formed into a folded insertion portion which will be located in the insertion groove. Such a roof panel at one end is held by the said element in a moulded fixing hole in the horizontal section and, adjacent to the horizontal section, an insertion groove forms a connecting projection to the coupling projection at the other end of the roof panel. Thanks to this construction, easy installation is possible, as the parts of the panel are overlapped, which reduces working time, making easy expansion of the roof panel and its further maintenance.

[0005] The specification of patent PL 241917 B1 and utility model PL 72502 Y1 discloses a set of descending roof panels, wherein a plurality of panels define a rising layer of panels and a descending layer of panels, and wherein each panel comprises a substantially rectangular panel body with a bottom edge, a top edge, a first lateral edge, a second lateral edge, outer surface and inner surface, a plug-in locking edge on the upper edge of the rectangular panel body and a socket locking edge on the lower edge of the rectangular panel body, and wherein the socket locking edge of the panels of the panel rising layer is configured to embed therein the plug-in locking edge of the panels of the panel descending layer.

[0006] In the state of the art, are known solutions that allow roof panels (steel roofing tiles) to be overlapped in an overlapping manner with the possibility of laying them in two ways, i.e. in a linear manner (one below the other) and in a brick-like manner. The solutions available in the state of the art, however, show a lack of certain features that would provide large coverage area, a durable panel surface at the same time that is protected from possible unwanted indentations during laying, and whose construction would allow good ventilation.

[0007] The aim of this solution is to provide a steel roofing tile whose construction allows it to meet the needs indicated above, namely to provide a steel roofing tile which, thanks to its construction, allows very simple coverage of as large area as possible through its wide field and its shape, thanks to which it adheres directly and perfectly to the battens on the roof truss, thus avoiding damage to the roofing. Thanks to the suitable shape of the indentations and the convexity, the steel roofing tile allows it to be laid in two ways, i.e. in a linear and brick-like manner. At the same time, the aim of the solution is to provide a steel roofing tile whose construction would allow good ventilation of the roofing without compromising its airtightness.

[0008] Rectangular steel roofing tile, having an upper edge and a lower edge, a first lateral edge and a second lateral edge, an outer surface and an inner surface, wherein the first lateral edge and the second lateral edge are defined by trapezoidal protuberances extending respectively along the first lateral edge and the second lateral edge, and having an additional third trapezoidal protuberance in the central part of the steel roofing tile, characterised by the entire surface of the steel roofing tile, except for the trapezoidal protuberances, is reeded, wherein a third trapezoidal protuberance divides the steel roofing tile into two equal areas, with the outer surface of the steel roofing tile on the side of the lower edge terminated by a descending fold whose surface is perpendicular to the surface of the steel roofing tile, and on the side of the upper edge there is a step, the shape of which matches the shape of the fold in the bottom edge of the steel roofing tile, and that in the bottom edge of the steel roofing tile, formed as a descending fold, five trapezoidal indentations are formed, the trapezoidal indentations coinciding with the position of the trapezoidal protuberances.

[0009] Preferably, the step consists of a top part and a lateral part, the lateral part having V-shaped mounting sockets which are centrally located at the height of the trapezoidal indentations in the lower edge, so that the first field is bounded by a trapezoidal protuberance along the first lateral edge, the lateral part of the step with the V-shaped mounting socket, a central third trapezoidal protuberance and a descending fold with trapezoidal indentations, and the second field is bounded by a central third trapezoidal protuberance, a lateral part of the step with an extended V-shaped mounting socket, a trapezoidal protuberance along the second lateral edge and a descending fold with trapezoidal indentations.

[0010] Preferably position of trapezoidal indentations allows the steel roofing tile to be overlapped linear, one below the other, as well as in a brick-like manner, i.e. overlapping.

[0011] Preferably, the trapezoidal indentations are shaped to form a trapezoidal protuberances.

[0012] Preferably, the trapezoidal indentations along the first and second lateral edges of the steel roofing tile and the central indentation are formed by a continuous production process - roll forming - while the indentations are straight cut-outs made by a punching unit.

[0013] Preferably, the outer surface and the inner surface of the steel roofing tile are reeded.

[0014] The steel roofing tile is shown in the drawing where Fig. 1 shows a perspective view of steel roofing tile from the upper surface, Fig.2 shows a perspective view of steel roofing tile from the lower surface, Fig.3 shows a perspective view of steel roofing tile from above, Fig. 4 shows a bottom view of the steel roofing tile, Fig. 5 shows front view of the steel roofing tile from the longitudinal edge with five indentations, Fig. 6 shows a view of the steel roofing tile from the left, Fig. 7 shows a perspective view from the top surface of the folded steel roofing tiles in a 'brick' arrangement, Fig. 8 shows a front view, from the longitudinal edge of the steel roofing tiles in a "brick" arrangement, Fig. 9 shows a top view of the steel roofing tiles in a "brick" arrangement, Fig. 10 shows a view from the left of the steel roofing tiles in a "brick" arrangement, Fig. 11 shows a perspective view from the top assembly surface of the steel roofing tile in a linear arrangement, Fig. 12 shows a front view, from the longitudinal edge of the steel roofing tile in a linear arrangement, Fig. 13 shows a top view of the steel roofing tiles in a linear arrangement, Fig. 14 shows a view from the left of the steel roofing tiles in a linear arrangement.

[0015] The steel roofing tile 10 is described in details below. The juxtaposition of multiple steel roofing tiles 10 forms a steel roofing tile assembly, as shown in Fig. 7, 9, 11 and 13. Steel roofing tile 10, according to Fig. 1 is rectangular in shape and has a upper edge 1 and a lower edge 2, a first lateral edge 3 and a second lateral edge 4, an outer surface 5 and an inner surface 6 which, when fitted, adjoins the roof surface (not shown). The upper edge 1 and the lower edge 2 are parallel to each other, as are the first lateral edge 3 and the second lateral edge 4, which are also parallel to each other. The lateral edges 3, 4 of the rectangular steel roofing tile 10 are defined by trapezoidal protuberances 9a and 9b running along their entire lengths. The lower edge 2 is a fold 12, the surface of which runs perpendicular to the surface of the steel roofing tile 10. As shown in Fig. 6 fold 12 is terminated by a flat step 16. The upper edge, in turn, is a step 13 with the top part 14 parallel to the surface of the steel roofing tile 10.

[0016] The rectangular steel roofing tile 10 in the middle of its length, measured relative to the lower edge 2 and the upper edge 1, has a central third trapezoidal protuberance 7 which divides the rectangular shape of the steel roofing tile 10 into two equal fields 8a and 8b. The surface of the steel roofing tile 10 apart from the lateral trapezoidal protuberances 9a and 9b and the central trapezoidal protuberance 7 is reeded. The reeding covers both the outer surface 5 and the inner surface 6 of the steel roofing tile 10 which stiffens and reinforces the two fields 8a, 8b of the steel roofing tile 10. In addition, the two wide fields make it possible to achieve a large coverage width - in other words, the roof is covered more quickly with steel roofing tiles according to the solution. The wide fields 8a, 8b of the steel roofing tile 10 adhere directly and precisely to the battens on the roof truss (not shown), which affects the laying process itself and the subsequent functionality of the roof. Fields 8a, 8b face the battens (not shown), thus avoiding unwanted damage to the roof covering in a situation when the roofer will step onto the field. Thus, the roofing does not 'wave' after final installation, the risk of dents and damage is minimised and walking on the roof is improved.

[0017] As indicated earlier, the fold 12 is the lower edge 2 of the steel roofing tile 10 - relative to the formation of the lower edge 2 the shape of the upper edge 1, formed as a step 13, is matched. As shown in Fig. 5 on the fold surface 12, five trapezoidal indentations 12a, 12b, 12c, 12d, 12e are formed along the length of the lower edge 2 of the steel roofing tile 10, the trapezoidal indentations 12a and 12e coinciding with the position of the trapezoidal protuberances, 9a and 9b respectively, trapezoidal indentation 12c coincides with the position of central trapezoidal protuberance 7, while trapezoidal protuberances 12b and 12d are formed halfway along fields 8a and 8b respectively. The trapezoidal indentations 12a to 12e in frontal view have identical shape and dimensions, however, their spatial geometry is different. Trapezoidal indentation 12c and the two outermost trapezoidal indentations 12a and 12e are created in a continuous production process - roll forming. Such indentations have a longitudinal and vertical geometry. On the other hand, the trapezoidal indentations 12b and 12d, formed in the middle of fields 8a and 8b, are straight cut-outs with a flange made through the punching unit in the machine. The profile of the trapezoidal indentations 12a, 12b, 12c, 12d, 12e allows them to be closely aligned with the profile of the trapezoidal protuberances 7, 9a and 9b, thus providing the possibility of overlapping steel roofing tile in both linear and brick-like manners.

[0018] As shown in Fig. 1, step 13 forms the top part 14 and the lateral part 15, with the lateral part 15 having two mounting sockets 15a and 15b in the shape of an extended V located centrally at the height of the trapezoidal indentations 12b and 12d in the lower edge 2. Stretched mounting sockets 15a and 15b allow positioning of the steel roofing tile10 when it is laid in a brick-like manner. Mounting sockets 15a and 15b are stretched to compensate for excess sheeting without causing unnecessary curling, corrugation or cracking of the sheeting.

[0019] Thus, the first field 8a is bounded by a trapezoidal protuberance 9a along the first lateral edge 3, the lateral part 15 of the step 13 with an extended V-shaped mounting socket 15a, the central third trapezoidal protuberance 7 and the fold 12 having trapezoidal indentations 12a, 12b and 12c. Similarly, the second field 8b is bounded by the central third trapezoidal protuberance 7, the lateral part 15 of the step 13 with an extended V-shaped mounting socket 15b, the trapezoidal protuberance 9b along the second lateral edge 4 and the fold 12, having trapezoidal indentations 12c, 12d and 12e.

[0020] As shown in Fig. 7, in a situation where the steel roofing tiles 10 are arranged in a brick-like manner, i.e. in an overlapping manner, one of the trapezoidal indentations 12a, 12c or 12e defined by the trapezoidal protuberances 7, 9a or 9b remains "uncovered", i.e. does not adhere any other trapezoidal protuberance in a matching manner. The same scenario occurs when the steel roofing tiles 10 are arranged in a linear manner, as shown in Fig. 11, in which case the trapezoidal indentations that remain unaligned with the trapezoidal protuberances are trapezoidal indentations 12b and 12d. This type of alignment of the steel roofing tiles 10 in both versions on the roof slope (not shown) helps ventilation of the roof and freer flow of air under the roof slope, which is crucial in terms of roof use. At the same time, it is important to point out that this construction of the steel roofing tiles 10, does not adversely affect the airtightness of the roofing.

[0021] The wide reeded fields 8a, 8b also have an additional function, allowing the integration of photovoltaic systems. For example, each steel roofing tile 10 consists of two fields of 350 x 525 mm each, which will allow for an efficient integrated photovoltaic system in the future.

Claims

1. A steel roofing tile (10) of rectangular shape, having an upper edge (1) and a lower edge (2), a first lateral edge (3) and a second lateral edge (4), an outer surface (5) and an inner surface (6), the first lateral edge (3) and the second lateral edge (4) being defined by trapezoidal protuberances (9a, 9b) extending along the first lateral edge (3) and the second lateral edge (4) respectively and having an additional third trapezoidal protuberance (7) in the central part of the steel roofing tile (10), characterised in that the entire surface of the steel roofing tile (10), apart from the trapezoidal protuberances (7, 9a, 9b), is reeded, wherein the third trapezoidal protuberance (7) divides the steel roofing tile (10) into two equal fields (8a, 8b), wherein the outer surface (5) of the steel roofing tile (10) on the side of the lower edge (2) is terminated by a descending fold (12), the surface of which is perpendicular to the surface of the steel roofing tile (10), and on the side of the upper edge (1) a step (13) is formed, the shape of which matches the formation of the fold (12) in the lower edge (2) of the steel roofing tile (10), and that in the lower edge (2) of the steel roofing tile (10), formed as a descending fold (12), five trapezoidal indentations (12a, 12b, 12c, 12d, 12e) are formed, the trapezoidal indentations (12a, 12e) coinciding with the position of the trapezoidal protuberances (9a, 9b), the trapezoidal indentation (12c) coincides with the position of the central trapezoidal protuberance (7), while the trapezoidal protuberances (12b, 12d) are formed halfway along the fields (8a, 8b).

2. Steel roofing tile according to claim 1, characterized in that the step (13) consists of a top part (14) and a lateral part (15), the lateral part (15) forming mounting sockets (15a, 15b) in the shape of an extended V, which are centrally located at the height of trapezoidal indentations (12b, 12d) in the lower edge (2), so that the first field (8a) is limited by a trapezoidal protuberance (9a) along the first lateral edge (3), the lateral part (15) of the step (13) with a mounting socket (15a) in the shape of an extended V, a central third trapezoidal protuberance (7) and a descending fold (12) with trapezoidal indentations (12a, 12b, 12c), and a second field (8b) bounded by a central third trapezoidal protuberance (7), a lateral part (15) of the step (13) with an mounting socket (15b) in the shape of an extended V, a trapezoidal protuberance (9b) along the second lateral edge (4) and a descending fold (12), with trapezoidal indentations (12c, 12d, 12e).

3. Steel roofing tile according to claim 1 or 2, characterised in that the arrangement of the trapezoidal indentations (12a, 12b, 12c, 12d, 12e) allows the steel roofing tile to be overlapped in a linear manner, one below the other, as well as in a brick-like manner, i.e. in an overlapping manner.

4. Steel roofing tile according to claim 3, characterised in that the trapezoidal indentations (12a, 12b, 12c, 12d, 12e) are adapted in shape to form the trapezoidal protuberances (7, 9a, 9b).

5. Steel roofing tile according to any of the preceding claims, characterised in that the trapezoidal indentations (12a, 12e) along the first and second lateral edges (3, 4) of the steel roofing tile (10) and the central indentation (12c) are formed by a continuous manufacturing process - roll forming, while the indentations (12b, 12d) are straight cut-outs made by a punching unit.

6. Steel roofing tile according to any of the preceding claims, characterised in that the outer surface (5) and the inner surface (6) of the steel roofing tile (10) are reeded.

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