Gutter-free node construction method for high-wind-resistance leakage-free roof

Abstract

The invention discloses a gutter-free node construction method for a high-wind-resistance and leakage-free roof, which comprises the following steps of: S1, mounting a drainage folding piece, paving the drainage folding piece at the bottom of a cornice of a roof outer plate and positioning the drainage folding piece on the outer side of a cornice purline; s2, mounting a cornice edge closing piece, inserting the upper end of the cornice edge closing piece into the bottom of the roof outer plate, and connecting the lower end with the wall surface outer plate; a large-cap waterproof self-tapping screw with a wind-resistant gasket sequentially penetrates through the roof outer plate, the upper edge of the cornice edge closing piece and the drainage folding piece, and the roof outer plate, the upper edge of the cornice edge closing piece and the drainage folding piece are jointly fixed to the cornice purline; and meanwhile, the lower edge of the cornice edge closing piece is fixed on the wall surface outer plate by using self-tapping screws. According to the invention, through the double guarantee of mechanical fixation and hot melting sealing and the unique design of the cornice edge closing piece with the air passing hole, the full-closed waterproof function of the cornice is realized, the water drainage and ventilation functions are realized, and the industrial problems that a traditional roof is easy to leak and is weak in wind resistance are thoroughly solved.

Description

Technical Field

[0001] This invention relates to the field of building envelope systems, and more particularly to a gutterless joint method for high wind-resistant and leak-proof roofs. Background Technology

[0002] Traditional industrial plant roof drainage systems commonly use external gutters. This method has several inherent drawbacks: First, the gutters themselves become independent potential leakage points, with welds and connections prone to cracking due to thermal expansion and contraction of materials or vibrations from wind loads; second, gutters are easily clogged by leaves and debris, leading to poor drainage and rainwater overflowing into the building; third, the gutters and their support system increase the roof load and material costs; and finally, in extreme weather conditions such as typhoons, the gutters may detach entirely, posing a safety hazard.

[0003] While some improved gutter or waterproofing solutions exist on the market, most fail to fundamentally solve the aforementioned problems. These solutions often involve localized repairs, such as increased sealant application or added gutter supports, without addressing the root cause of the system's structural issues. Therefore, there is an urgent need in this field for a roof eaves joint solution that can completely eliminate the need for gutters, achieve long-lasting waterproofing, high wind resistance, and is cost-effective. Summary of the Invention

[0004] The purpose of this invention is to solve the above-mentioned technical problems by proposing a method for creating a wind-resistant and leak-proof roof without gutter joints.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A method for constructing a wind-resistant and leak-proof roof without gutters includes an outer roof panel and eaves purlins. The outer roof panel rests on the upper end of the eaves purlins. One side of the eaves purlins has an outer wall panel that abuts against it. The upper ends of the eaves purlins and the outer wall panel are set at an angle, and a drainage bend is provided outside the angle. An eaves trim is provided between the drainage bend and the outer roof panel, and the lower end of the eaves trim is set vertically and abuts against the outer wall panel. The outer roof panel, the eaves trim, and the drainage bend are all fixed to the eaves purlins using large-cap waterproof self-tapping screws with built-in wind-resistant pads. The lower end of the eaves trim is fixed to the outer wall panel with self-tapping screws. It also includes a flexible prefabricated eaves cover, which is connected to the roof panel and the eaves trim and covers the top of the waterproof self-tapping screws. The upper end of the eaves trim piece is provided with multiple first elongated oval holes for ventilation, and the lower end is provided with multiple second elongated oval holes for ventilation. The first and second elongated oval holes for ventilation are used to form drainage and ventilation channels in the internal cavity of the eaves trim piece. The node operation includes the following steps: S1: Install the drainage folding piece, laying it at the bottom of the eaves of the roof slab and on the outside of the eaves purlin; S2: Install the eaves trim, inserting its upper end into the bottom of the roof panel and connecting its lower end to the wall panel; use self-tapping screws with built-in wind-resistant pads to pass through the roof panel, the upper edge of the eaves trim, and the drainage fold in sequence, and fix them together to the eaves purlin; at the same time, use self-tapping screws to fix the lower edge of the eaves trim to the wall panel; S3: Install the flexible prefabricated cover plate for the eaves, connect one end of it to the eaves trim piece by hot air welding, and connect the other end to the roof panel by hot air welding, so that the end of the roof eaves forms a fully enclosed, waterproof, continuous and airtight whole.

[0006] Preferably, the upper end of the eaves trim is inserted into the bottom of the roof panel to a depth of 50-150mm.

[0007] Preferably, the fixing density of the large-cap waterproof self-tapping screws is 4 screws per roof panel.

[0008] Preferably, the outer wall panel has a corrugated position, and the self-tapping screws fixing the lower edge of the cornice trim are spaced 300mm apart and fixed to the corrugated position of the outer wall panel.

[0009] Preferably, the dimensions of the first and second elongated oval air passages are 6mm × 24mm, and the spacing between them is 300mm.

[0010] Preferably, the lower edge of the eaves trim is pre-formed with an integrally molded drip edge.

[0011] Preferably, the flexible prefabricated eaves cover is made of TPO material, and its width for covering and pressing the end of the roof panel is 50-120mm.

[0012] Preferably, it further includes a sealing mechanism, which is disposed within the second elongated vent hole.

[0013] Preferably, the sealing mechanism includes a filter screen fixed inside the second elongated vent hole.

[0014] Preferably, the sealing mechanism includes a circular hole replacing the second elongated vent hole, the circular hole penetrating the eaves trim piece, a coaxially arranged vertical rod penetrating the circular hole, an exhaust hole penetrating the vertical rod vertically, a fixing ring fixed to the upper end of the vertical rod, a spring fixed to the bottom of the fixing ring, the lower end of the spring fixedly connected to the eaves trim piece, a fixedly connected sealing plate sleeved on the outside of the vertical rod, a sealing ring fixed to the upper end of the sealing plate, the sealing ring abutting against the bottom of the eaves trim piece, and an inverted conical block fixed to the bottom of the vertical rod, the conical block having damping holes penetrating vertically and communicating with the exhaust holes, the lower end of the damping holes being tapered. It also includes a guide groove provided inside the circular hole, in which a guide rod is slidably connected, and the upper end of the guide rod is fixedly connected to the bottom of the fixing ring.

[0015] Compared with the prior art, the beneficial effects of this invention are as follows: Completely eliminate gutter leakage: Completely eliminate traditional gutters, fundamentally eliminating all potential leakage risks caused by defects in the gutters themselves.

[0016] Double waterproof protection: The first layer is a tight waterproof layer formed by "mechanical fixing + windproof gasket"; the second layer is a continuous, flexible, and slippery sealing layer formed by "hot air welding", which has extremely high reliability.

[0017] Excellent wind resistance: Wind-resistant pads and large cap nails prevent hole enlargement, and the layers are connected into a whole through a common fixing method, which greatly improves the eaves' wind resistance.

[0018] Self-draining and ventilation: The unique vent design serves as both an emergency drainage channel and a ventilation hole, preventing moisture from accumulating in the roof cavities, demonstrating ingenious functionality.

[0019] Long service life: The main waterproofing material is TPO with extremely strong weather resistance, and its service life can be consistent with that of the main roof structure, achieving a maintenance-free cycle of more than 10 years.

[0020] Air blowing vertically towards the eaves trim exerts a direct impact force on it. Since the air velocity outside the trim is high and the velocity inside is low, the sealed space generates a thrust opposite to the wind direction, increasing its wind resistance. Simultaneously, negative pressure is generated at the damping holes, reducing the relative air pressure inside the trim and protecting it.

[0021] Air blows along the length of the eaves trim, and the airflow velocity through the conical block is relatively high. The pressure difference between the top and bottom of the conical block can overcome the elastic force of the spring, thereby driving the vertical rod and the fixing ring to move down. This allows the eaves trim to communicate with the outside air, and the negative pressure air is generated at the circular hole, which balances the internal and external air pressure and also protects the eaves trim.

[0022] In summary, this invention innovatively achieves full waterproofing of the eaves while also providing drainage and ventilation functions through the dual protection of "mechanical fixing + hot-melt sealing" and the unique design of the eaves trim with vent holes. This completely solves the industry problems of traditional roofs being prone to leakage and having weak wind resistance. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of the gutter-less joint method for a high wind-resistant and leak-proof roof proposed in Example 1; Figure 2 This is a structural schematic diagram of the gutter-less joint method for a high wind-resistant and leak-proof roof proposed in Example 1; Figure 3 This is a structural schematic diagram of the gutter-less joint method for a high wind-resistant and leak-proof roof proposed in Example 1; Figure 4 This is a structural schematic diagram of the gutter-less joint method for a high wind-resistant and leak-proof roof proposed in Example 1; Figure 5 This is a structural schematic diagram of the gutter-less joint method for a high wind-resistant and leak-proof roof proposed in Example 1; Figure 6 This is a structural schematic diagram of the gutter-less joint method for a high wind-resistant and leak-proof roof proposed in Example 1; Figure 7 This is a structural schematic diagram of the gutter-less joint method for a high wind-resistant and leak-proof roof proposed in Example 1; Figure 8 This is a structural schematic diagram of the gutterless joint method for a high wind-resistant and leak-proof roof proposed in Example 1.

[0024] In the diagram: 1. Roof panel, 2. Eaves purlin, 3. Eaves trim, 4. Wall panel, 5. Flexible prefabricated eaves cover, 6. Waterproof self-tapping screw, 7. Sealing gasket, 8. Drainage fitting, 9. Self-tapping screw, 10. Drip edge, 11. First venting elongated hole, 12. Second venting elongated hole, 13. Conical block, 14. Spring, 15. Guide rod, 16. Guide groove, 17. Circular hole, 18. Fixing ring, 19. Vent hole, 20. Vertical rod, 21. Sealing plate, 22. Damping hole, 23. Sealing ring. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Example 1

[0026] Reference Figures 1-4 The method for constructing a wind-resistant and leak-proof roof without gutters includes an outer roof panel 1 and an eaves purlin 2. The outer roof panel 1 rests on the upper end of the eaves purlin 2. An outer wall panel 4 is provided on one side of the eaves purlin 2 and abuts against it. The upper ends of the eaves purlin 2 and the outer wall panel 4 are set at an angle, and a drainage fold 8 is provided outside the angle. An eaves trim 3 is provided between the drainage fold 8 and the outer roof panel 1 and abuts against it. The lower end of the eaves trim 3 is set vertically and abuts against the outer wall panel 4. The outer roof panel 1, the eaves trim 3, and the drainage fold 8 are fixed together to the eaves purlin 2 using large-cap waterproof self-tapping screws 6 with built-in wind-resistant pads. The lower end of the eaves trim 3 is fixed to the outer wall panel 4 by self-tapping screws 9. It also includes a flexible prefabricated eaves cover 5, which is connected to the roof outer panel 1 and the eaves edge trim 3 and covers the top of the waterproof self-tapping screw 6. Among them, the upper end of the eaves trim 3 is provided with multiple first elongated oval holes 11 and the lower end is provided with multiple second elongated oval holes 12. The first elongated oval holes 11 and the second elongated oval holes 12 are used to form drainage and ventilation channels in the internal cavity of the eaves trim 3. The node operation includes the following steps: Step 1: Install the drainage folding component 8. Use a color steel plate folding component as the drainage folding component 8, and lay it at the bottom of the eaves of the roof outer panel 1, located on the outside of the eaves purlin 2. It can leave a gap for the installation of the wall outer panel 4, or it can be installed flush against the outside of the wall outer panel 4 along its entire length. Its main function is to guide rainwater flowing out from the vent holes.

[0027] Step 2: Install the eaves trim 3; this trim is a composite material (0.6mm galvanized steel sheet + 1.8mm thick TPO). Its upper end is inserted into the bottom of the already laid roof panel 1, penetrating 50-150mm, and its lower part is connected to the wall panel 4. The core of this step is joint fixing: use large-cap waterproof self-tapping screws (4 screws / roof panel), and pre-lay wind-resistant pads under the screws to prevent the roof panel from expanding the holes. Securely fix the roof panel, eaves trim, and drainage trim together to the eaves purlin 2 to form the main structural wind-resistant and waterproof layer (first-stage waterproof seal).

[0028] The lower edge of the eaves trim 3 is fixed to the crest of the outer wall panel 4 with M5.5 self-tapping screws 9 at a spacing of @300mm. In addition, the eaves trim 3 has a first vent elongated oval hole 11 and a second vent elongated oval hole 12 with a spacing of 6*24mm and 300mm, and a drip edge 10 is pre-set at the lower end.

[0029] Step 3: Install the flexible prefabricated eaves cover plate 5; this cover plate is made of TPO material and has the same module as the roof panel 1. During installation, cover the eaves end of the roof panel and fasten the plate end by 30-120mm. One end is connected to the eaves trim piece by hot air welding, and the other end is connected to the roof panel by hot air welding, thus forming a fully enclosed secondary waterproof seal layer that completely covers the entire eaves end.

[0030] At this point, a fully enclosed, waterproof, and continuous sealed system is formed on the exterior of the roof. The mechanical fixing point at one end of the roof panel 1 is sealed within the eaves trim 3 and the flexible prefabricated eaves cover 5, achieving continuous waterproofing without affecting the sliding of the roof due to thermal expansion and contraction. The cavity formed between the eaves trim 3 and the flexible prefabricated eaves cover 5 is connected to the outside through a pre-set second elongated vent hole 12. This hole has a dual function: firstly, in extreme cases (such as when the first layer of waterproofing fails), it can drain infiltrated rainwater; secondly, it serves as a vent to balance the air pressure inside and outside the roof.

[0031] It also includes a sealing mechanism, which is set inside the second elongated vent hole 12. The sealing mechanism includes a filter screen fixed inside the second elongated vent hole 12, so as to prevent flying insects from entering the eaves trim 3 and avoid affecting the eaves trim 3, while not affecting the function of the second elongated vent hole 12. Example 2

[0032] Reference Figure 5 The difference between this embodiment and embodiment 1 is that the lower end of the drainage fold 8 extends downward, and the drainage fold 8 and the eaves trim 3 are fixed together to the outer wall panel 4 by self-tapping screws 9. In this way, if the first waterproofing fails, the rainwater entering the eaves trim 3 through the first venting elongated hole 11 can be diverted so that it does not come into contact with the outer wall panel 4, thus protecting the outer wall panel 4. Example 3

[0033] Reference Figures 6-8 The difference between this embodiment and embodiments 1 and 2 is that the sealing mechanism includes a circular hole 17 to replace the second elongated vent hole 12, and the arrangement between two adjacent circular holes 17 is greater than 500 mm; the circular hole 17 is provided through the eaves trim 3, and a coaxially arranged vertical rod 20 is provided through the circular hole 17; it also includes a guide groove 16 provided inside the circular hole 17, and a guide rod 15 is slidably connected in the guide groove 16; the upper end of the guide rod 15 is fixedly connected to the bottom of the fixing ring 18; wherein, there are at least two sets of guide grooves 16 and guide rods 15, so as to ensure that the two are coaxial and move stably up and down.

[0034] The vertical rod 20 has exhaust holes 19 running through it from top to bottom. A fixing ring 18 is fixed to the upper end of the vertical rod 20. A spring 14 is fixed to the bottom of the fixing ring 18. The lower end of the spring 14 is fixedly connected to the eaves trim 3. A sealing plate 21 is fixedly connected to the outside of the vertical rod 20. A sealing ring 23 is fixed to the upper end of the sealing plate 21. The sealing ring 23 abuts against the bottom of the eaves trim 3. An inverted cone block 13 is fixed to the bottom of the vertical rod 20. A damping hole 22 communicating with the exhaust holes 19 runs through the vertical rod 23 from top to bottom. The lower end of the damping hole 22 is tapered. Further explanation: In the initial state, when the spring 14 is compressed, the sealing plate 21 drives the sealing ring 23 to abut against the bottom of the eaves trim 3, thus sealing the circular hole 17. Due to the setting of the damping hole 22 and the vent hole 19, the air pressure inside and outside the roof can still be balanced.

[0035] In windy weather, when the wind blows vertically towards the eaves trim 3, that is, vertically towards the outer wall panel 4, the air velocity towards the conical block 13 is reduced due to the obstruction of the eaves trim 3 and the outer wall panel 4. Bernoulli's principle will occur at the conical block 13, that is, the air velocity is low and the pressure is high at the upper end of the conical block 13, while the air velocity is high and the pressure is low at the lower end, which leads to a pressure difference between the two, thus causing the conical block 13 to generate a downward thrust. However, the thrust is too small to overcome the movement of the spring 14, so the circular hole 17 is still sealed at this time.

[0036] However, it exerts a direct impact force on the eaves trim 3, and the external air velocity of the eaves trim 3 is high while the internal air velocity is low. Therefore, the sealed space will generate a thrust on the eaves trim 3 opposite to the wind direction, which can increase the wind resistance of the eaves trim 3. At the same time, a negative pressure will be generated at the damping hole 22, reducing the relative air pressure inside the eaves trim 3 and thus protecting the eaves trim 3.

[0037] If it is windy and the wind blows along the length of the eaves trim 3, the air velocity on the entire outer wall of the eaves trim 3 is relatively high, while the air velocity inside the eaves trim 3 is low, which will generate a pressure difference of a certain size. If this problem is not addressed, the eaves trim 3 may deform. At this time, the air velocity through the conical block 13 is relatively high, and the pressure difference between the upper and lower parts of the conical block 13 can overcome the elastic force of the spring 14, thereby driving the vertical rod 20 and the fixing ring 18 to move down. This allows the eaves trim 3 to communicate with the external air, and the negative pressure air is generated at the circular hole 17 to balance the internal and external air pressure, and also to protect the eaves trim 3.

[0038] In addition, the vertical rod 20 is provided with multiple drainage holes in a ring shape that are connected to the vent hole 19. If the first waterproofing fails, rainwater will fall on the sealing plate 21 and flow through the drainage holes into the vent hole 19, and finally be discharged through the damping hole 22.

[0039] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A method for constructing a wind-resistant and leak-proof roof without gutter joints, characterized in that: The roof includes an outer roof panel (1) and an eaves purlin (2). The outer roof panel (1) rests on the upper end of the eaves purlin (2). A wall panel (4) is provided on one side of the eaves purlin (2) and abuts against it. The upper ends of the eaves purlin (2) and the wall panel (4) are set at a corner and a drainage fold (8) is provided outside the corner. An eaves trim (3) is provided between the drainage fold (8) and the roof panel (1) and abuts against it. The lower end of the eaves trim (3) is set vertically and abuts against the wall panel (4). The roof panel (1), the eaves trim (3), and the drainage fold (8) are fixed together on the eaves purlin (2) using large-cap waterproof self-tapping screws (6) with wind-resistant pads. The lower end of the eaves trim (3) is fixed on the wall panel (4) by self-tapping screws (9). It also includes a flexible prefabricated eaves cover (5), which is connected to the roof outer panel (1) and the eaves trim (3) and covers the top of the waterproof self-tapping screw (6); The upper end of the eaves trim (3) is provided with a plurality of first elongated holes (11) for ventilation, and the lower end is provided with a plurality of second elongated holes (12) for ventilation. The first elongated holes (11) and the second elongated holes (12) for ventilation are used to form drainage and ventilation channels in the cavity inside the eaves trim (3). The node operation includes the following steps: S1: Install the drainage fold (8) and lay it at the bottom of the eaves of the roof panel (1) and on the outside of the eaves purlin (2); S2: Install the eaves trim (3) so that its upper end is inserted into the bottom of the roof panel (1) and its lower end is connected to the wall panel (4); use the large cap waterproof self-tapping screw (6) with windproof pad to pass through the roof panel (1), the upper edge of the eaves trim (3) and the drainage fold (8) in sequence, and fix them together to the eaves purlin (2); at the same time, use the self-tapping screw (9) to fix the lower edge of the eaves trim (3) to the wall panel (4); S3: Install the flexible prefabricated cover plate (5) at the eaves, connect one end of it to the eaves trim piece (3) by hot air welding, and connect the other end to the roof outer panel (1) by hot air welding, so that the eaves end of the roof forms a fully enclosed, waterproof, continuous and sealed whole.

2. The method for constructing a gutterless joint for a high wind-resistant and leak-proof roof according to claim 1, characterized in that, The upper end of the eaves trim (3) is inserted into the bottom of the roof panel (1) to a depth of 50-150mm.

3. The method for constructing a gutterless joint for a high wind-resistant and leak-proof roof according to claim 1, characterized in that, The fixing density of the large-cap waterproof self-tapping screws (6) is 4 screws per roof panel.

4. The method for constructing a gutterless joint for a high wind-resistant and leak-proof roof according to claim 1, characterized in that, The outer wall panel (4) has a wave crest position. The self-tapping screw (9) is fixed at a spacing of 300mm from the bottom edge of the eaves trim (3) and is fixed at the wave crest position of the outer wall panel (4).

5. The method for constructing a gutterless joint for a high wind-resistant and leak-proof roof according to claim 1, characterized in that, The dimensions of the first elongated vent hole (11) and the second elongated vent hole (12) are 6mm × 24mm, and the spacing is 300mm.

6. The method for constructing a gutterless joint for a high wind-resistant and leak-proof roof according to claim 1, characterized in that, The lower edge of the eaves trim (3) is pre-formed with an integrally formed drip edge (10).

7. The method for constructing a gutterless joint for a high wind-resistant and leak-proof roof according to claim 1, characterized in that, The flexible prefabricated cover sheet (5) for the eaves is made of TPO material, and its width for covering and pressing the end of the roof panel (1) is 50-120mm.

8. The method for constructing a gutterless joint for a high wind-resistant and leak-proof roof according to claim 1, characterized in that, It also includes a sealing mechanism, which is disposed in the second elongated vent hole (12).

9. The method for constructing a gutterless joint for a high wind-resistant and leak-proof roof according to claim 8, characterized in that, The sealing mechanism includes a filter screen fixed inside the second elongated orifice (12).

10. The method for constructing a gutterless joint for a high wind-resistant and leak-proof roof according to claim 8, characterized in that, The sealing mechanism includes a circular hole (17) for replacing the second elongated vent hole (12). The circular hole (17) is provided through the eaves trim piece (3). A coaxially arranged vertical rod (20) is provided through the circular hole (17). The vertical rod (20) is provided with vent holes (19) at the top and bottom. A fixing ring (18) is fixed to the upper end of the vertical rod (20). A spring (14) is fixed to the bottom of the fixing ring (18). The lower end of the spring (14) is connected to the eaves. The edge trim (3) is fixedly connected, and the outside of the vertical rod (20) is fitted with a fixedly connected sealing plate (21). The upper end of the sealing plate (21) is fixed with a sealing ring (23). The sealing ring (23) abuts against the bottom of the edge trim (3). The bottom of the vertical rod (20) is fixed with an inverted cone block (13). The cone block (13) is provided with a damping hole (22) that communicates with the exhaust hole (19) through it. The lower end of the damping hole (22) is set in a constricted position. It also includes a guide groove (16) provided inside the circular hole (17), and a guide rod (15) is slidably connected in the guide groove (16), with the upper end of the guide rod (15) fixedly connected to the bottom of the fixing ring (18).

Images