Stainless steel gutter side face TPO fixing structure and fixing technology thereof
By using a combination of galvanized support components and stainless steel socket-type fixing components on the sides of the stainless steel gutter, the problems of insufficient sealing and wind uplift resistance of TPO waterproof membrane are solved, achieving higher waterproof performance and simplified construction.
Patent Information
- Application Number
- CN202511487198.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-17
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2045-10-17
AI Technical Summary
In existing technologies, the TPO waterproof membrane on the side of stainless steel gutters has poor sealing performance and insufficient wind uplift resistance, which can easily lead to rainwater leakage and backflow. In addition, the construction is complicated and costly.
The structure combines galvanized support components with stainless steel socket-type fixing components. It is fixed to the gutter keel with self-tapping screws and then mechanically connected to the TPO waterproof membrane before injecting sealant to ensure reliable connection and sealing.
It improves the wind resistance and waterproof sealing performance of TPO waterproof membrane, prevents rainwater backflow, simplifies the construction process, and reduces costs.
Smart Images

Figure CN121110883A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of metal roof waterproof joint construction in construction engineering, and particularly relates to a fixing structure and fixing process of a stainless steel gutter side TPO waterproof coiled material. BACKGROUND
[0002] The gutter of a building, as a key component of the roof drainage system, its waterproof performance is directly related to the safety, durability and use function of the building. Its importance mainly lies in the following aspects: 1. Preventing structural damage and ensuring building safety: leakage causes structural erosion: if the gutter waterproofing fails, rainwater will continue to penetrate into the building main part such as concrete, steel or wood structure. To concrete: water will penetrate and cause steel corrosion, the volume of the corroded steel expands, which will cause the concrete to crack and peel off, and the bearing capacity to decrease. To steel structure: it will directly cause the corrosion of load-bearing components such as keels and supports, weakening the structural strength. To wooden structure: it will cause wood to rot and mildew, losing the carrying capacity. Freeze-thaw cycle damage: in cold regions, water that penetrates into the structural joints expands when frozen and shrinks when thawed, and this repeated freeze-thaw cycle will accelerate the cracking and crushing of materials, causing irreversible damage. 2. Preventing indoor space from being flooded and ensuring use function and property safety: this is the most direct and obvious risk. Gutter waterproofing failure will cause: rainwater backflow: in heavy rain, if the gutter is not drained in time, rainwater may overflow the gutter. If the connection between the gutter and the roof material is not sealed tightly, rainwater will flow into the room along the gap. Continuous leakage: even if the gutter is not overflowed, the small gap in the connection joint will also cause rainwater to penetrate under the wind pressure or capillary action. Ultimately causing damage to the ceiling, walls and decorative layers (such as paint and wallpaper), damaging indoor electrical appliances, furniture, stored goods, etc., resulting in huge economic losses. 3. Maintaining thermal performance and reducing energy consumption: most modern buildings have insulation layers on the roof. If the gutter waterproofing fails, water will penetrate into the insulation layer (such as rock wool and glass wool): once the insulation material is wet, its thermal performance will decrease dramatically. Because the thermal conductivity of water is much higher than that of still air. Ultimately, the building's warm in winter and cool in summer effect will be worse, and the energy consumption of the heating or cooling system will increase significantly in order to maintain the indoor temperature, causing energy waste and rising operating costs. 4. Responding to extreme weather and improving system reliability: with climate change, extreme heavy rain and strong wind weather is becoming more frequent, putting higher demands on the performance of building envelope systems. The gutter waterproofing system, especially its connection joint with the roof, must have: wind uplift resistance: under the action of strong wind, the waterproof coiled material cannot be blown up or torn. Static water pressure resistance: when there is water accumulation in a short time, it can effectively prevent rainwater from backflowing. Durability: it can withstand long-term sun exposure, rain, temperature changes and other tests, and maintain stable performance.
[0003] In existing technologies, the TPO waterproof membrane on the sides of stainless steel gutters is typically fixed by interlocking with the roof flashing. This connection method has the following drawbacks: TPO has poor sealing between itself and the gutter, which can easily lead to rainwater leakage. Insufficient wind uplift resistance; the roll material is prone to falling off in strong winds. When the gutters are not draining properly or when rainwater overflows the gutters, rainwater backflow can easily occur, causing indoor leaks.
[0004] Patent document CN115538710A discloses a method for installing retractable wind-resistant gutters, including: gutter keel installation, gutter bottom plate installation, rock wool installation, stainless steel gutter installation, gutter side steel pressure plate installation, gutter TPO laying, glass wool, roof panel installation, and flashing installation. The gutter keel installation method includes: using a total station to measure and lay out lines on the main purlins, measuring the three-dimensional coordinates of the main gutter keel, installing the main gutter keel according to the measured coordinates, adjusting the position and elevation of the main gutter keel, and fixing the main gutter keel. Then, tack welding of the secondary keel of the gutter, i.e., 50mm square tubing and 50mm angle steel, spaced 1 meter apart, is performed. After tack welding, full welding is carried out to ensure the theoretical curvature of the gutter is met. The welding process must ensure uniform weld seams, and excess weld slag is removed and anti-corrosion treatment is applied.
[0005] In existing patent documents, utility model patent with authorization announcement number CN211143536U discloses a waterproof structure for a metal roof gutter. It includes an original U-shaped gutter and two metal roof panels inclined at both sides of the top of the original U-shaped gutter. The metal gutter also includes a U-shaped channel and two inclined plates at both sides of the top of the U-shaped channel. The cross-section of the metal gutter is funnel-shaped, with the U-shaped channel nested inside the original U-shaped gutter. The two inclined plates are respectively erected on the two metal roof panels, and XPS extruded polystyrene board is filled between the inclined plates and the metal roof panels. The outer surfaces of the metal roof panels and the metal gutter are provided with a "four-coat, one-cloth" waterproof structural layer. The U-shaped channel and the two inclined plates are integrally formed or welded together.
[0006] The newly added metal gutter in the aforementioned patent document can increase the drainage flow area and solve the problems of unreasonable original design, insufficient drainage, rainwater overflow, easy backflow into the room, rusting of many connecting parts, and increased construction costs due to complex construction process steps.
[0007] Therefore, optimizing and improving the existing TPO fixing structure and fixing process on the side of the gutter is a problem worth studying. Summary of the Invention
[0008] In order to solve the above-mentioned problems existing in the prior art, the present application provides a stainless steel gutter side TPO fixing structure and fixing process which optimizes the fixing structure and fixing material selection.
[0009] The object of the present application is achieved as follows: A stainless steel gutter side TPO fixing structure comprises a galvanized support fixed on a gutter keel by a pin, a stainless steel socket type fixing fold fixed with a stainless steel gutter, and a roof TPO waterproof roll fixedly connected with the stainless steel socket type fixing fold and the galvanized support device. The galvanized support is fixed on the gutter keel by a self-tapping screw or an automatic screw. The stainless steel socket type fixing fold is welded with the stainless steel gutter. The outermost end of the stainless steel socket type fixing fold is provided with a groove, the roof TPO waterproof roll is inserted into the groove of the socket type fixing fold, the TPO waterproof roll is mechanically fixed with the socket type fixing fold by using a self-tapping screw, and sealant is filled in the groove. The width of the galvanized support is 50-100 mm, and the galvanized supports are arranged at intervals with a spacing of 500-800 mm, so as to prevent the gutter from being laterally deviated and support the TPO roll to prevent it from being wrinkled and deformed. The top of the stainless steel socket type fixing fold is welded with the stainless steel gutter, and the groove is flush with the outer side of the galvanized support.
[0010] The construction process of the stainless steel gutter side TPO fixing structure comprises the following steps: 1. Process the galvanized support, fix it on the gutter keel, and connect it by a self-tapping screw. 2. Weld the stainless steel socket type fixing fold with the stainless steel gutter. 3. Insert the roof TPO roll into the groove provided on the socket type fixing fold. 4. Fix the roof TPO roll on the socket type fixing fold by a self-tapping screw, and then fill sealant in the gap of the socket type fixing fold.
[0011] Active beneficial effects: 1. The galvanized support of the present application has the functions of gutter fixing and TPO roll supporting, which improves the stability of the overall structure; 2. The stainless steel socket type fixing fold of the present application is welded with the gutter, which ensures reliable connection and excellent waterproof performance; 3. The TPO waterproof roll and the fixing fold in the present application are mechanically connected and sealed by sealant, which enhances the wind lifting resistance and waterproof sealing performance; 4. The structure and process of the present application can ensure the overall sealing effect even in the case of TPO non-full-paved gutter, and prevent rainwater from flowing back to the indoor. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 A schematic diagram of the first step of the process of this invention; Figure 2 Schematic diagram of the structure of step two in the process of this invention; Figure 3 Schematic diagram of the structure of step three in the process of this invention; Figure 4 Schematic diagram of the structure of step four in the process of this invention; Figure 5 A complete structural schematic diagram of the present invention. Detailed Implementation
[0013] The invention will now be further described with reference to the accompanying drawings: like Figure 5 As shown, a TPO fixing structure for the side of a stainless steel gutter includes a galvanized support member fixed to the gutter keel by pins; a stainless steel socket-type fixing member fixed to the stainless steel gutter; and a roof TPO waterproof membrane fixedly connected to the stainless steel socket-type fixing member and the galvanized support device. The galvanized support is fixed to the gutter keel by self-tapping screws or automatic screws; The stainless steel socket-type fixing component is welded and fixed to the stainless steel gutter; The outermost end of the stainless steel socket-type fixing member is provided with a groove. The roof TPO waterproof membrane is inserted into the groove of the socket-type fixing member. The TPO waterproof membrane is mechanically fixed to the socket-type fixing member using self-tapping screws, and the groove is filled with sealant. The galvanized support members are 50-100mm wide and spaced apart at intervals of 500-800mm. They are used to prevent the gutter from shifting laterally and to support the TPO roll material to prevent it from wrinkling or deforming. The top of the stainless steel socket-type fixing component is welded to the stainless steel gutter, and its groove is flush with the outer side of the galvanized support component.
[0014] A construction process for a TPO fixing structure on the side of a stainless steel gutter includes the following steps: 1.) Process galvanized support components and fix them to the gutter keel using self-tapping screws, such as... Figure 1 As shown; 2.) Weld stainless steel socket-type fixing fittings to stainless steel gutters, such as... Figure 2 As shown; 3) Insert the TPO roofing membrane into the groove of the socket-type fixing fitting, such as... Figure 3 As shown; 4) Secure the TPO roofing membrane to the socket-type fixing brackets using self-tapping screws, and then apply adhesive to the gaps in the socket-type fixing brackets, such as... Figure 4 As shown.
[0015] This invention uses galvanized support components to not only fix the gutter and prevent lateral displacement, but also to support the TPO waterproof membrane; stainless steel socket-type fixing components are reliably connected to the gutter, and the mechanical connection between TPO and stainless steel socket-type fixing components ensures a reliable indirect connection between TPO and the stainless steel gutter; after the stainless steel socket-type fixing components are connected to TPO, sealant is injected into the groove to ensure the overall sealing of TPO and stainless steel gutter; even when TPO is not fully covered in the gutter, the overall sealing of TPO and stainless steel gutter is guaranteed.
[0016] The above is only used to illustrate the technical solution of the present invention and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention, as long as they do not depart from the spirit and scope of the technical solution of the present invention, should be covered within the scope of the claims of the present invention.
Claims
1. A TPO fixing structure for the side of a stainless steel gutter, characterized in that: This includes galvanized support members fixed to the gutter keel by pins; stainless steel socket-type fixing fittings fixed to the stainless steel gutter; and TPO waterproof membrane for roofing fixedly connected to the stainless steel socket-type fixing fittings and galvanized support devices.
2. The TPO fixing structure for the side of a stainless steel gutter according to claim 1, characterized in that: The galvanized support is fixed to the gutter keel by self-tapping screws or automatic screws.
3. The TPO fixing structure for the side of a stainless steel gutter according to claim 1, characterized in that: The stainless steel socket-type fixing component is welded and fixed to the stainless steel gutter.
4. The TPO fixing structure for the side of a stainless steel gutter according to claim 3, characterized in that: The outermost end of the stainless steel socket-type fixing member is provided with a groove. The roof TPO waterproof membrane is inserted into the groove of the socket-type fixing member. The TPO waterproof membrane is mechanically fixed to the socket-type fixing member using self-tapping screws, and the groove is filled with sealant.
5. The TPO fixing structure on the side of a stainless steel gutter according to claim 1, characterized in that: The galvanized support members are 50-100mm wide and spaced apart at intervals of 500-800mm. They are used to prevent the gutter from shifting laterally and to support the TPO roll material, preventing it from wrinkling or deforming.
6. The TPO fixing structure for the side of a stainless steel gutter according to claim 1, characterized in that: The top of the stainless steel socket-type fixing component is welded to the stainless steel gutter, and its groove is flush with the outer side of the galvanized support component.
7. The construction process of a stainless steel gutter side TPO fixing structure as described in any one of claims 1-6, characterized in that, This includes the following steps: 1.) Process galvanized support components and fix them to the gutter keel using self-tapping screws; 2.) Weld stainless steel socket-type fixing fittings to stainless steel gutters; 3) Insert the TPO roofing membrane into the groove of the socket-type fixing fitting; 4) Secure the TPO roofing membrane to the socket-type fasteners using self-tapping screws, and then apply adhesive to the gaps in the socket-type fasteners.
Citation Information
Patent Citations
Metal roof gutter waterproof structure
CN211143536U
Metal roofing enclosure system gutter and roofing low-end shrink wind uplift construction process
CN105781036A
Construction method of profiled metal gutter TPO waterproof coiled material
CN113756581A
Installation method of telescopic wind-resistant gutter
CN115538710A
Waterproof structure for joint of metal roof board and polyester carbonate board
CN218881367U