Composite metal roof structure
By using a composite metal roof structure, with standing seam and welded supports, and hot-melt welding of waterproof membrane, the problems of insufficient waterproof and wind resistance of existing metal roofs are solved, achieving improved stability and safety, while simplifying the construction process and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-04-03
AI Technical Summary
Existing metal roofing structures are inadequate in terms of waterproofing and wind resistance, especially in terms of safety and stability under extreme weather conditions. Furthermore, the construction process is complex and costly.
The composite metal roof structure is adopted, which involves setting a first and a second vertical seam overlap on the metal plate and fixing it with a support welded between them. The waterproof membrane is hot-melt welded to the seam and then composited to the surface of the metal plate. The edges are hot-melt welded and fixed. The support and purlin are connected by fasteners and sliding connection, and the construction is prefabricated.
It improves the waterproof and wind resistance of metal roofs, enhances stability and safety, simplifies construction procedures, reduces construction costs and time, and extends service life.
Smart Images

Figure CN224078522U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of metal roofing technology, and in particular to a composite metal roofing structure. Background Technology
[0002] Metal roofing is widely used in the current construction industry due to its simple and lightweight structure, safe, simple, fast, accurate and economical construction, and easy processing of the panels. Therefore, metal roofing comes in various forms and can be used in large public buildings such as factories, warehouses and residences.
[0003] In existing metal roofing designs, waterproof membranes are typically laid beneath standing seam metal roofing panels. These panels rely primarily on edge interlocking for connection and are mounted on the purlin flanges via supports and secured with self-tapping screws. Firstly, these self-tapping screws penetrate the waterproofing layer, and the dense array of screws severely compromises the watertightness of the membrane, significantly weakening its waterproofing function within the roofing system. Secondly, while the edge interlocking method of fixing standing seam metal roofing panels offers limited stability, considering the impact of extreme weather on buildings, especially in areas prone to typhoons and storms, the safety of metal roofs is questionable in the face of complex environmental challenges, hindering long-term stable operation. Utility Model Content
[0004] The purpose of this invention is to provide a composite metal roofing structure with good waterproof and wind resistance performance, thereby improving the safety and durability of metal roofs.
[0005] To solve the above-mentioned technical problems, the embodiments of this utility model provide a technical solution as follows:
[0006] A composite metal roofing structure includes multiple metal panels. Each metal panel has a first and a second vertical locking edge extending perpendicularly from both ends. Adjacent metal panels are connected by the first and second vertical locking edges. A support is provided between the first and second vertical locking edges. The first vertical locking edge, the support, and the second vertical locking edge are welded together. A waterproof membrane is laminated onto the upper surface of each metal panel. The waterproof membrane has a first edge corresponding to the first vertical locking edge and a second edge corresponding to the second vertical locking edge. The first edge is separate from the first vertical locking edge and extends beyond its upper edge. The second edge extends to the lower edge of the second vertical locking edge. The first edge covers the first locking edge, and the second locking edge is heat-fused and fixed to the second edge.
[0007] Furthermore, the support includes a base and a connecting frame that is welded and fixedly connected to the first vertical locking edge and the second vertical locking edge. One end of the base is fixedly connected to the purlin by fasteners, and the other end is provided with a sliding groove. The connecting frame is slidably connected to the sliding groove.
[0008] Furthermore, the first upright seam, the support, and the second upright seam are fixed together by welding with a roll welding machine.
[0009] Furthermore, the first upright locking edge, the support, and the upper ends of the second upright locking edge are interlocked and rolled towards the weld bead position to cover the weld bead.
[0010] Furthermore, the waterproof membrane is made of TPO material, and the waterproof membrane is bonded to the metal plate using an adhesive and a thermal bonding process.
[0011] The composite metal roofing structure provided by this utility model, compared with the prior art, features a design where the first edge of the waterproof membrane is separated from the first vertical locking edge, and the second edge is recessed within the lower edge of the second vertical locking edge. This allows for welding and fixing of the first vertical locking edge, support, and second vertical locking edge of the metal panel, effectively increasing the stability and safety of the metal roof and improving its wind resistance. Furthermore, by bonding the waterproof membrane to the upper surface of the metal panel and covering the first vertical locking edge, support, and second vertical locking edge with the waterproof membrane and hot-melting its edges, the surface of the waterproof membrane becomes a unified waterproof structure, preventing penetration by screws or other fasteners, resulting in significantly enhanced waterproofing performance and improved durability. Compared with existing metal roofing structures, the construction process is simpler. The composite of the metal panel and waterproof membrane can be prefabricated in the factory, reducing on-site construction workload, shortening the construction cycle, improving efficiency, and lowering costs. Attached Figure Description
[0012] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings represent similar elements. Unless otherwise stated, the figures in the drawings do not constitute a limitation on scale.
[0013] Figure 1 This is a three-dimensional structural diagram of a composite metal roof structure according to an embodiment of this utility model;
[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the metal plate in an embodiment of this utility model;
[0015] Figure 3 This is a front view of the metal plate in an embodiment of this utility model;
[0016] Figure 4 This is a schematic diagram of the overlap between the first and second upright locking edges in an embodiment of this utility model;
[0017] Figure 5 This is a partial enlarged view of the composite metal roof structure without waterproof membrane covering in this embodiment of the present invention;
[0018] Figure 6 This is a partial enlarged view of a composite metal roof structure according to an embodiment of this utility model.
[0019] Explanation of reference numerals in the attached drawings: 10, metal plate; 101, first vertical seam; 102, second vertical seam; 20, waterproof membrane; 201, first edge; 202, second edge; 30, support; 301, connecting frame; 302, base; 303, groove; 40, weld bead. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this utility model to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.
[0021] like Figure 1-6As shown, one embodiment of this utility model relates to a composite metal roof structure, including multiple metal plates 10. Each metal plate 10 has a first vertical locking edge 101 and a second vertical locking edge 102 extending perpendicularly from both ends. Adjacent metal plates 10 are connected by the first vertical locking edge 101 and the second vertical locking edge 102. A support 30 is provided between the first vertical locking edge 101 and the second vertical locking edge 102. The first vertical locking edge 101, the support 30, and the second vertical locking edge 102 are welded and fixed together. The upper surface of the 10 is provided with a waterproof membrane 20. The waterproof membrane 20 is provided with a first edge 201 corresponding to the first vertical locking edge 101. The waterproof membrane 20 is provided with a second edge 202 corresponding to the second vertical locking edge 102. The first edge 201 is separated from the first vertical locking edge 101 and extends beyond the upper edge of the first vertical locking edge. The second edge 202 extends to the lower edge of the second vertical locking edge 102. The first edge 201 covers the first locking edge and the second locking edge and is fixed by hot-melt welding to the second edge 202. By separating the first edge 201 of the waterproof membrane 20 from the first vertical locking edge 101, and by recessing the second edge 202 within the lower edge of the second vertical locking edge 102, the first vertical locking edge 101, the support 30, and the second vertical locking edge 102 of the metal plate 10 can be welded and fixed together, effectively increasing the stability and safety of the metal roof and improving its wind resistance. Preferably, the first vertical locking edge 101, the support 30, and the second vertical locking edge 102 are welded and fixed together using a roll welding machine; the waterproof membrane 20 is laminated to the upper surface of the metal plate 10, and the waterproof membrane 20 covers the first vertical locking edge 101 and the support 30. The second standing seam 102, with its edges hot-melt welded for fixation, makes the surface of the waterproof membrane 20 a single waterproof structure, preventing penetration by screws or other fasteners. This significantly enhances the waterproof performance of the composite metal roof structure and improves its durability. The metal plate 10 provides robust support for the waterproof membrane 20, effectively preventing movement and deformation that could damage the waterproof layer. The combination of the waterproof membrane 20 and the standing seam metal roof panel significantly strengthens the overall strength and stability of the roof, better resisting external loads such as wind and snow, ensuring the roof remains stable and durable under various extreme weather conditions. Preferably, the waterproof membrane 20 is made of TPO material and is bonded to the metal plate 10 using an adhesive and a thermal bonding process. The excellent anti-aging and anti-corrosion properties of the TPO waterproof membrane 20 greatly extend the service life of the composite metal roof panel, reducing maintenance and replacement work caused by aging and corrosion, thus lowering long-term maintenance costs.
[0022] One embodiment relates to a composite metal roofing structure, wherein the support 30 includes a base 302 and a connecting frame 301 welded and fixedly connected to a first vertical locking edge 101 and a second vertical locking edge 102. One end of the base 302 is fixedly connected to a purlin by fasteners, and the other end is provided with a sliding groove 303. The connecting frame 301 is slidably connected to the sliding groove 303. Preferably, the base 302 is fixed to the purlin by screws. Through the sliding connection between the base 302 and the connecting frame 301, after the connecting frame 301 is welded and fixed to the first vertical locking edge 101 and the second vertical locking edge 102, the base 302 can be finely adjusted to make the base 302 and the purlin more precisely correspond and be fixed, thereby improving the convenience of installation.
[0023] like Figure 4-6 As shown, in one embodiment, a composite metal roof structure is involved. The upper ends of the first standing seam 101, the support 30, and the second standing seam 102 are interlocked. After the three are welded and fixed, the upper ends of the first standing seam 101, the support 30, and the second standing seam 102 are rolled up towards the weld 40 using a seam locking device to cover the weld 40, thereby increasing the overall aesthetics of the composite metal roof structure. By covering and protecting the weld 40, the durability of the weld 40 position is improved, further enhancing the safety and durability of the composite metal roof structure.
[0024] This utility model provides a composite metal roofing structure. By separating the first edge of the waterproof membrane from the first vertical locking edge, and by indenting the second edge within the lower edge of the second vertical locking edge, the first vertical locking edge, support, and second vertical locking edge of the metal panel can be welded and fixed together, effectively increasing the stability and safety of the metal roof and improving its wind resistance. Furthermore, by laminating the waterproof membrane onto the upper surface of the metal panel and by covering the first vertical locking edge, support, and second vertical locking edge with the waterproof membrane and hot-melting its edges, the surface of the waterproof membrane becomes a unified waterproof structure, preventing penetration by screws or other fasteners, thus significantly enhancing its waterproof performance and improving the durability of the composite metal roofing structure. Compared to existing metal roofing structures, the construction process is simpler. The composite of the metal panel and waterproof membrane can be prefabricated in the factory, reducing on-site construction workload, shortening the construction cycle, improving efficiency, and lowering costs.
[0025] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present invention.
Claims
1. A composite metal roofing structure, characterized by, The application relates to a waterproof roof, which comprises a plurality of metal plates (10), the two ends of the metal plates (10) are provided with first vertical locking edges (101) and second vertical locking edges (102) extending perpendicularly to the plate surface, the first vertical locking edges (101) and the second vertical locking edges (102) of adjacent metal plates (10) are overlapped, a support (30) is arranged between the first vertical locking edges (101) and the second vertical locking edges (102), and the first vertical locking edges (101), the support (30) and the second vertical locking edges (102) are welded and fixed; a waterproof roll material (20) is arranged on the upper surface of the metal plate (10), the waterproof roll material (20) is provided with a first edge (201) corresponding to the first vertical locking edge (101), the waterproof roll material (20) is provided with a second edge (202) corresponding to the second vertical locking edge (102), the first edge (201) is arranged separately from the first vertical locking edge (101) and extends beyond the upper edge of the first vertical locking edge, the second edge (202) extends to the lower edge of the second vertical locking edge (102), and the first edge (201) is hot-melt welded and fixed with the first locking edge and the second locking edge and the second edge (202).
2. A composite metal roofing structure according to claim 1, wherein The support (30) comprises a base (302) and a connecting frame (301) welded and fixedly connected with the first vertical locking edge (101) and the second vertical locking edge (102), one end of the base (302) is fixedly connected with a purlin through a fastener, and the other end is provided with a sliding groove (303); and the connecting frame (301) is slidably connected with the sliding groove (303).
3. The composite metal roofing structure according to claim 1, wherein The first vertical locking edge (101), the support (30) and the second vertical locking edge (102) are welded and fixed by a roller welding machine.
4. A composite metal roofing structure according to claim 3, wherein The upper ends of the first vertical locking edge (101), the support (30) and the second vertical locking edge (102) are engaged and arranged towards the position of a welding bead (40) and are rolled to shield the welding bead (40).
5. A composite metal roofing structure according to any one of claims 1 to 4, wherein, The waterproof roll material (20) is made of TPO material, and the waterproof roll material (20) is combined with the metal plate (10) by using a hot-combining process and an adhesive.