Large factory building metal roof waterproof structure
By incorporating an adhesive layer, fixing plates, and threaded fittings on the metal roof, combined with the design of TPO waterproof membrane and stainless steel fixing plates, the stability and sealing issues of traditional metal roof waterproofing structures under severe weather conditions are resolved, achieving higher waterproofing performance and service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI HYDROPOWER ENG BUREAU
- Filing Date
- 2025-05-29
- Publication Date
- 2026-05-01
AI Technical Summary
Traditional metal roof waterproofing structures are difficult to maintain stability and sealing under severe weather conditions, leading to rainwater seepage and affecting service life and safety.
The first waterproof membrane is fixed with an adhesive layer and pressed together with a fixing plate and threaded fittings. The edges of adjacent membranes are welded together, and a second waterproof membrane is covered to enhance the connection and sealing. TPO waterproof membrane and stainless steel fixing plates are used to improve stability and waterproof performance.
It enhances the waterproof performance and stability of metal roofs, reduces rainwater erosion, extends service life, lowers maintenance costs, and improves the economy and reliability of industrial buildings.
Smart Images

Figure CN224187072U_ABST
Abstract
Description
A waterproof structure for metal roofs of large factories Technical Field
[0001] This utility model relates to the field of building technology, and in particular to a waterproof structure for a large factory metal roof. Background Technology
[0002] In the field of modern industrial construction, metal roofs for large factory buildings have been widely used due to their advantages such as high structural strength and fast construction speed. However, the waterproofing of metal roofs has always been a key factor affecting their service life and performance. Traditional metal roof waterproofing structures often rely on a single waterproofing material or simple fixing methods. These methods often fail to guarantee long-term waterproofing effectiveness in the face of complex and ever-changing natural environments, especially in severe weather conditions such as strong winds and heavy rain.
[0003] Specifically, traditional waterproof membrane installation methods may rely solely on adhesives or a few fasteners for fixation. Under prolonged wind exposure, the edges of the membrane can easily loosen or detach, allowing rainwater to seep in and compromising the safety and durability of the roof structure. Furthermore, the connection points between the fasteners (such as threaded fittings) and the waterproof membrane are also vulnerable to rainwater penetration; improper handling can also lead to leaks.
[0004] Therefore, developing a waterproof structure that can effectively improve the waterproof performance of metal roofs, especially maintaining stability and sealing under severe weather conditions, has become an urgent technical problem to be solved in the current industrial building field. Summary of the Invention
[0005] The purpose of this utility model is to provide a waterproof structure for large factory metal roofs, so as to improve the waterproof performance and stability of metal roofs.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a waterproof structure for a large-scale factory metal roof, the large-scale factory metal roof waterproof structure comprising:
[0007] An adhesive layer is provided and laid on the outer surface of the roof base layer;
[0008] The first waterproof membrane is bonded and fixed to the adhesive layer by the adhesive layer, and the edges of adjacent first waterproof membranes are tightly connected by welding.
[0009] A fixing plate is provided at the edge of the first waterproof membrane, and the fixing plate is fixed to the roof base layer by threaded parts. The fixing plate presses and fixes the first waterproof membrane.
[0010] A second waterproof membrane covers the outside of the fixing plate and the edge of the first waterproof membrane, and the edge of the second waterproof membrane is tightly welded to the surface of the first waterproof membrane.
[0011] In one embodiment, both the first waterproof membrane and the second waterproof membrane are TPO waterproof membranes.
[0012] In one embodiment, the welded surfaces adjacent to the first waterproof membrane are inclined slopes.
[0013] In one embodiment, a rubber waterproofing pad is further included, which is disposed between the fixing plate and the first waterproofing membrane.
[0014] In one embodiment, the fixing plate is made of stainless steel and has a thickness of 2mm-4mm. The fixing plate is provided with a plurality of threaded mounting holes at equal intervals along the length of the edge of the first waterproof membrane, and the spacing between adjacent threaded mounting holes is 100mm-200mm.
[0015] The above-described technical solutions in the embodiments of this utility model have at least the following technical effects or advantages:
[0016] The large-scale factory metal roof waterproofing structure provided in this embodiment of the invention firmly adheres and fixes the first waterproof membrane to the outer surface of the roof base layer by setting an adhesive layer. Simultaneously, fixing plates and threaded fittings are used to press and fix the edges of the first waterproof membrane, greatly enhancing the connection strength between the first waterproof membrane and the roof base layer. Even under severe weather conditions such as strong winds, the stability of the first waterproof membrane is ensured, effectively preventing it from loosening or falling off due to wind force. Furthermore, the edges of adjacent first waterproof membranes are tightly connected by welding, forming a seamless waterproof barrier that effectively prevents rainwater from seeping in through the membrane seams. At the same time, a second waterproof membrane covers the outside of the fixing plate and the edges of the first waterproof membrane, and is tightly welded to the surfaces of the first waterproof membranes on both sides, further enhancing the sealing of the waterproof layer and effectively preventing rainwater from seeping in through the gaps between the threaded fittings and the first waterproof membrane, thereby comprehensively improving waterproofing performance. By improving the stability and sealing of the waterproof structure, this invention effectively reduces rainwater erosion of the roof structure, extends the service life of the metal roof, reduces maintenance and replacement costs, and improves the economy and reliability of industrial buildings.
[0017] In summary, the waterproof structure for large factory metal roofs of this utility model has significant effects in improving waterproof performance, enhancing stability, and extending service life.
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Attached Figure Description
[0019] Figure 1 is a schematic diagram of the waterproof structure of a large factory metal roof after the adhesive layer is laid, according to an embodiment of the present invention.
[0020] Figure 2 is a schematic diagram of the structure of the large factory metal roof waterproofing structure provided in this embodiment of the present invention after the installation of the first waterproof membrane;
[0021] Figure 3 is a schematic diagram of the structure after the installation of the waterproof metal roof structure for a large factory building provided in this embodiment of the utility model.
[0022] The labels for the various figures are as follows:
[0023] 1. Adhesive layer; 2. First waterproof membrane; 3. Fixing plate; 4. Second waterproof membrane; 5. Threaded fittings; 6. Rubber waterproof gasket; 7. Roof base layer. Detailed Implementation
[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0025] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0028] Please refer to Figures 1 to 3. This application embodiment provides a waterproof structure for a large factory metal roof, including an adhesive layer 1, a first waterproof membrane 2, a fixing plate 3, and a second waterproof membrane 4. The adhesive layer 1 is laid on the outer surface of the roof base layer 7. The first waterproof membrane 2 is adhesively fixed to the adhesive layer 1, and the edges of adjacent first waterproof membranes 2 are tightly connected by welding. The fixing plate 3 is disposed on the edge of the first waterproof membrane 2 and is fixed to the roof base layer 7 by threaded fittings 5, pressing and fixing the first waterproof membrane 2. The second waterproof membrane 4 covers the outside of the fixing plate 3 and the edge of the first waterproof membrane 2, and the edge of the second waterproof membrane 4 is tightly welded to the surface of the first waterproof membrane 2.
[0029] During construction, the roof base layer 7 is first treated. The flatness of the roof base layer 7 is checked to ensure there are no obvious bumps or unevenness. The strength of the roof base layer 7 is checked to ensure it can withstand the weight and load of the metal roofing system. The straightness of the roof base layer 7 is checked to ensure there are no obvious bends or twists. The joints of the roof base layer 7 are checked to ensure they are tight and seamless. According to specifications, the width of the joints, the uniformity and tightness of the adhesive, etc., are checked. An infrared leak test is performed on the roof to confirm that the roof base layer 7 has no potential leak problems. The roof is then cleaned to ensure the surface of the roof base layer 7 is clean and free of debris. Then, an adhesive layer 1 (which can be paint or adhesive) is evenly applied to the roof base layer 7, as shown in Figure 1. Next, the first waterproof membrane 2 is laid onto the surface of the adhesive layer 1, and the adhesive layer 1 is used to bond the first waterproof membrane 2. The edges of adjacent first waterproof membrane 2 are welded together. Then, the edges of the first waterproof membrane 2 are pressed and fixed using threaded parts 5 and fixing plates 3, as shown in Figure 2. Finally, install the second waterproof membrane 4, as shown in Figure 3.
[0030] This invention utilizes an adhesive layer 1 to adhere and fix the first waterproof membrane 2 to the roof base layer 7. Then, a fixing plate 3 and threaded fittings 5 are used to press and fix the edges of the first waterproof membrane 2, improving its stability and ensuring it is firmly fixed to the outer surface of the roof base layer 7. This allows the first waterproof membrane 2 to remain stable even in severe weather conditions such as strong winds. Adjacent edges of the first waterproof membrane 2 are tightly connected by welding, improving sealing and waterproofing performance. To prevent rainwater from seeping between the threaded fittings 5 and the first waterproof membrane 2, and from the edges of the first waterproof membrane 2, a second waterproof membrane 4 is installed over the fixing plate 3 and the edges of the first waterproof membrane 2. The edges of the second waterproof membrane 4 are tightly welded to the surfaces of the first waterproof membrane 2 on both sides, preventing external rainwater from seeping into the roof base layer 7 through the gap between the threaded fittings 5 and the first waterproof membrane 2, further improving waterproofing performance.
[0031] In one embodiment, both the first waterproof membrane 2 and the second waterproof membrane 4 are TPO waterproof membranes. TPO waterproof membranes have excellent weather resistance, aging resistance, and chemical corrosion resistance. Using TPO waterproof membranes as the materials for the first and second waterproof layers can significantly improve the overall performance and durability of the waterproof structure, effectively resist the erosion of various harsh environmental factors, and extend the service life of the waterproof structure.
[0032] In one embodiment, the welding surfaces of adjacent first waterproof membrane 2 are inclined slopes. Designing the welding surfaces of adjacent first waterproof membrane 2 as inclined slopes increases the contact area during welding, improving the strength and sealing of the weld. This design helps reduce stress concentration at the weld, preventing weld cracking caused by temperature changes or external forces, thereby further enhancing the stability and waterproof performance of the waterproof structure.
[0033] In one embodiment, a rubber waterproof gasket 6 is further included, which is disposed between the fixing plate 3 and the first waterproof membrane 2. The rubber waterproof gasket 6 between the fixing plate 3 and the first waterproof membrane 2 serves as a buffer and seal. The rubber waterproof gasket 6 fills the tiny gaps between the fixing plate 3 and the membrane, preventing rainwater from seeping in through these gaps. Simultaneously, the elastic properties of rubber can absorb some external force, reducing direct impact on the waterproof membrane.
[0034] In one embodiment, the fixing plate 3 is made of stainless steel and has a thickness of 2mm-4mm. Multiple threaded mounting holes 5 are evenly spaced along the length of the edge of the first waterproof membrane 2, with a spacing of 100mm-200mm between adjacent holes. The stainless steel fixing plate 3 offers excellent corrosion resistance and strength, ensuring stable performance over a long period. The thickness of the fixing plate 3, designed between 2mm and 4mm, guarantees sufficient strength without being excessively thick and heavy, thus avoiding increased cost or construction difficulty. The evenly spaced threaded mounting holes 5 allow for uniform force distribution on the fixing plate 3, improving the fixing effect.
[0035] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A waterproof structure for a large factory metal roof, characterized in that, The large factory metal roof waterproofing structure includes: an adhesive layer, which is laid on the outer surface of the roof base layer; a first waterproof membrane, which is adhered and fixed to the adhesive layer, and the edges of adjacent first waterproof membranes are tightly connected by welding; a fixing plate, which is disposed on the edge of the first waterproof membrane and fixed to the roof base layer by threaded parts, and the fixing plate presses and fixes the first waterproof membrane; and a second waterproof membrane, which covers the outside of the fixing plate and the edge of the first waterproof membrane, and the edge of the second waterproof membrane is tightly welded to the surface of the first waterproof membrane.
2. The waterproof structure for a large factory metal roof according to claim 1, characterized in that: Both the first waterproof membrane and the second waterproof membrane are TPO waterproof membranes.
3. The waterproof structure for a large factory metal roof according to claim 1, characterized in that: The welding surface adjacent to the first waterproof membrane is an inclined slope.
4. The waterproof structure for a large factory metal roof according to claim 1, characterized in that: It also includes a rubber waterproof pad, which is disposed between the fixing plate and the first waterproof membrane.
5. The waterproof structure for a large factory metal roof according to claim 1, characterized in that: The fixing plate is made of stainless steel and has a thickness of 2mm-4mm. The fixing plate has multiple threaded mounting holes evenly spaced along the length of the edge of the first waterproof membrane, and the spacing between adjacent threaded mounting holes is 100mm-200mm.