Metal roof waterproof joint structure

Abstract

The utility model relates to the technical field of building construction discloses a kind of metal roof waterproof joint structure, comprising: first water board has first section and second section;Second water board is set above first water board, and second water board has first bending part, and first water board has second bending part;Metal roof panel is set on the first section of first water board, and metal roof panel has bending section bending upwards;Waterproof layer is set between metal roof panel and first water board, the utility model is extended again bending upwards by first water board towards the second section of metal roof panel, when rainwater falls on metal roof panel, rainwater is not easy to directly enter between metal roof panel and first water board due to the bending section being set, simultaneously when rainwater is too large, rainwater is entered after overflowing the gap between metal roof panel bending section and first water board, and it is blocked by waterproof layer, can avoid welding when installing, avoid rain leakage problem due to welding not firm.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a waterproof joint structure for metal roofs. Background Technology

[0002] As an indispensable component of steel structure buildings, the waterproofing of skylights and smoke exhaust windows in metal roofs is a key aspect of construction.

[0003] Chinese patent document CN204691096U discloses a waterproof structure for the edge of a skylight on a metal roof, including a skylight drip edge, a flexible waterproof membrane, a skylight flashing, and a metal roof panel. The horizontal edge of the skylight drip edge overlaps and is fixed to the skylight frame, and the lower end of the vertical edge is rolled inward into a hook shape. The upper end of the vertical edge of the skylight flashing is folded outward into a hook-shaped rolled edge and hooked and fixed to the lower end of the vertical edge of the skylight drip edge. The edge line of the horizontal edge of the skylight flashing is seamlessly welded and fixed to the metal roof panel. A flexible waterproof membrane that fully covers the skylight drip edge, skylight flashing, metal roof panel, and the internal roof frame is placed between them.

[0004] However, the skylight drip edge is welded to the metal roof panel, and waterproof material is applied at the welded area for waterproofing. However, the welding quality is unstable and prone to incomplete welds, which can lead to deformation and leaks. After long-term use, rainwater leakage is likely to occur. Utility Model Content

[0005] In view of this, the present invention provides a metal roof waterproof joint structure to solve the problem that the existing waterproof structure using welding is prone to incomplete welding and leakage.

[0006] This utility model provides a waterproof joint structure for a metal roof, including: a first flashing, having a first section extending horizontally and a second section extending upward in a vertical direction;

[0007] The second flashing is disposed above the first flashing. The second flashing has a first bending portion that bends inward, and the first flashing has a second bending portion that is engaged with the first bending portion.

[0008] A metal roof panel is disposed on a first section of the first flashing, the metal roof panel having a bent section extending toward a second section of the first flashing and bending upward;

[0009] A waterproof layer is disposed between the metal roof panel and the first flashing.

[0010] By extending the metal roof panel towards the second section of the first flashing and then bending it upwards, rainwater falling onto the metal roof panel is less likely to directly enter the space between the metal roof panel and the first flashing due to the bend. At the same time, when the rain is too heavy, the rainwater can overflow through the gap between the bend section of the metal roof panel and the first flashing and be blocked by the waterproof layer. Welding can be avoided during installation, preventing leaks caused by weak welds.

[0011] In one alternative embodiment, the bent end of the metal roof panel is attached to the second section of the first flashing.

[0012] By tightly fitting the second section of the first flashing, a double layer of protection is formed, effectively preventing rainwater penetration.

[0013] In one alternative embodiment, a waterproof underlayment is provided on the side of the metal roof panel near the first flashing, the waterproof underlayment having a first section covering the metal roof panel and a second section extending upward to cover the second flashing, the waterproof underlayment being used to repel water.

[0014] By installing a waterproof underlayment, the gap between the first flashing and the metal roof panel is completely sealed, further enhancing the waterproof effect, ensuring that rainwater cannot penetrate, and extending the service life of the structure.

[0015] In one alternative embodiment, a first sealing layer for waterproofing and thermal insulation is provided on the side of the first flashing away from the metal roof panel.

[0016] By setting a first sealing layer, when rainwater enters between the first flashing and the metal roof panel, the first sealing layer further blocks the rainwater, ensuring that it cannot continue to penetrate.

[0017] In one optional embodiment, the first sealing layer includes: a water-stopping layer, a heat-insulating layer, and a vapor barrier layer arranged sequentially.

[0018] By setting a waterproof layer, rainwater can be prevented from directly contacting the insulation layer, thus preventing the insulation layer from becoming damp and failing. At the same time, the insulation layer also serves as a heat insulation layer, while the vapor barrier layer is used to block water vapor from entering, ensuring the dryness of the metal roof panels.

[0019] In one optional embodiment, a sound insulation layer is provided on the side of the first sealing layer facing away from the first flashing, thereby ensuring the sound insulation effect inside the room.

[0020] In one alternative embodiment, the sound insulation layer is spaced apart from the first sealing layer.

[0021] By spacing the sound insulation layer from the first sealing layer, the rainwater and moisture isolated by the first sealing layer are prevented from affecting the sound insulation layer.

[0022] In one alternative embodiment, the device further includes a vertically arranged fastener for installing the skylight, wherein the first flashing plate and the second flashing plate are disposed on the side end face of the fastener.

[0023] By installing fasteners, the skylight, the first flashing, and the second flashing are mounted onto the fasteners to ensure the waterproofing effect at the skylight location.

[0024] In one alternative embodiment, the fastener has a fixing plate extending toward the first flashing on its side end face, and at least a portion of the first flashing is disposed on the upper end face of the fixing plate.

[0025] By setting a fixing plate on the side end face of the fastener, the first flashing is installed on the upper end face of the fixing plate, and the fixing plate supports the first flashing.

[0026] In one alternative embodiment, the second section of the first flashing is spaced apart from the fastener.

[0027] By setting the second section of the first flashing plate apart from the fastener, an isolation space is formed between the second section of the first flashing plate and the fastener, preventing water vapor from corroding the fastener. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a front view of a metal roof waterproofing node structure according to an embodiment of the present utility model;

[0030] Figure 2 for Figure 1 The front view of the metal roof waterproofing node structure shown;

[0031] Figure 3 for Figure 1 Exploded front view of the metal roofing panels and waterproofing layer;

[0032] Figure 4 for Figure 1 Front view of the first flashing, the second flashing, and the waterproofing layer;

[0033] Figure 5 This is a front view of a waterproof joint structure for a metal roof.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. First flashing; 2. Second flashing; 3. First bend; 4. Second bend; 5. Metal roof panel; 6. Bending section; 7. Waterproof layer; 8. Waterproof underlayment; 9. Skylight; 10. Thermal insulation layer; 11. Vapor barrier; 12. Sound insulation layer; 13. Fasteners; 14. Keel; 15. Waterstop layer; 16. Fixing plate. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] The area between the metal roof panel 5 and the skylight 9 is a critical node in the building roofing system and a highly vulnerable point for leakage. The metal roof panel 5 and the skylight 9 frame are two independently installed materials and components. There must be physical joints or overlaps between them. Current designs use welded joints, but if the weld is incomplete, it cannot completely prevent the penetration of water and air.

[0038] Furthermore, the metal roof panel 5 and the skylight 9 have different rates of thermal expansion and contraction. Temperature changes will cause them to contract or expand at different rates and magnitudes, which will generate significant stress at the joints, leading to fatigue damage, deformation, peeling, or even cracking at the locations of weak welds, thus forming leakage channels.

[0039] The following is combined with Figures 1 to 5 The following describes embodiments of the present invention.

[0040] like Figure 1 , Figure 2 , Figure 3As shown in the embodiment of this utility model, a waterproof joint structure for a metal roof is provided, comprising: a first flashing 1, a second flashing 2, a metal roof panel 5, and a waterproof layer 7. The first flashing 1 has a first section extending horizontally and a second section extending vertically upward; the second flashing 2 is disposed above the first flashing 1, and a skylight 9 is disposed above the second flashing 2. The second flashing 2 has a first bending portion 3 that bends inward, and the first flashing 1 has a second bending portion 4 that is snapped into and connected to the first bending portion 3; the metal roof panel 5 is disposed on the first section of the first flashing 1, and the metal roof panel 5 has a bending section 6 that extends toward the second section of the first flashing 1 and bends upward; the waterproof layer 7 is disposed between the metal roof panel 5 and the first flashing 1.

[0041] During installation, the second flashing 2 is located below the skylight 9, and the first flashing 1 is located below the second flashing 2. The first and second sections of the first flashing 1 are angled together. A first bend 3 is provided on the upward-extending second section of the first flashing 1, and a second bend 4 is provided on the second flashing 2. The first bend 3 and the second bend 4 are interlocked, thus enabling the installation of the first flashing 1 and the second flashing 2. A metal roofing panel 5 is installed on the first flashing 1. The metal roofing panel 5 has a bend 6 that extends towards the second flashing 2.

[0042] By extending the metal roof panel 5 towards the second section of the first flashing 1 and then bending it upwards, rainwater falling onto the metal roof panel 5 is less likely to directly enter between the metal roof panel 5 and the first flashing 1 due to the bent section 6. At the same time, when the rain is too heavy, the rainwater will overflow through the gap between the bent section 6 of the metal roof panel 5 and the first flashing 1 and be blocked by the waterproof layer 7.

[0043] Specifically, the first flashing 1 and the second flashing 2 are waterproof materials manufactured using existing waterproofing processes. The first flashing 1 is a 2.0mm thick aluminum-magnesium-manganese flashing, and the second flashing 2 is also a 2.0mm thick aluminum-magnesium-manganese flashing. The first flashing 1 and the second flashing 2 are components used to guide rainwater flow, providing waterproofing between the metal roof panel 5 and the skylight 9, ensuring these areas are not washed away by rainwater, while also protecting the waterproofing layer 7 of the rest of the roof. Alternatively, the first flashing 1 and the second flashing 2 can also be made of other materials, such as stainless steel flashing.

[0044] Specifically, the metal roofing panel 5 refers to a building material used for building roofs, made of metal materials, specifically an aluminum-magnesium-manganese alloy in this embodiment. Alternatively, the metal roofing panel 5 can also be a color-coated steel sheet, aluminum sheet, stainless steel sheet, etc.

[0045] Specifically, waterproof layer 7 is a waterproof sealant, which can be silicone sealant. Alternatively, epoxy resin waterproof sealant can also be used.

[0046] Specifically, the second flashing 2 has a first bend 3 formed by extending horizontally outward, bending downward, and then bending inward. The first bend 3 of the first flashing 1 is an inclined outward extending plate. The first bend 3 of the first flashing 1 can be inserted into the first bend 3 to form a snap-fit. After the snap-fit, rainwater cannot enter the bottom of the first flashing 1 through the gap between the first flashing 1 and the second flashing 2, effectively improving the waterproofing effect.

[0047] like Figure 1 As shown, in this embodiment, the bent end of the metal roof panel 5 is attached to the second section of the first flashing 1, which can effectively reduce the amount of rainwater entering through the gap between the metal roof panel 5 and the first flashing 1. The bent section of the metal roof panel 5 is lower than the height of the second section of the first flashing 1. The bent section of the metal roof panel 5 is integrally formed with the metal roof panel 5. After the bent section extends upward, it can form a water-retaining area on the upper surface of the metal roof panel 5. When the height of the rainwater is lower than the height of the bent section 6, the rainwater cannot enter between the metal roof panel 5 and the first flashing 1. When the height of the rainwater is higher than the bent section, the rainwater is blocked by the waterproof layer 7. By tightly attaching the second section of the first flashing 1, rainwater penetration is effectively prevented. It should be noted that, as an alternative implementation, the bent section 6 of the metal roof panel 5 may not be attached to the second section of the first flashing 1, but may form a gap, with the waterproof layer 7 set in the gap.

[0048] like Figure 2 , Figure 4 As shown, in this embodiment, a waterproof underlayment 8 is provided on the side of the metal roof panel 5 near the first flashing 1. The waterproof underlayment 8 covers a portion of the metal roof panel 5, meaning it is positioned on the side of the metal roof panel 5 facing away from the first flashing 1. The waterproof underlayment 8 has a first section covering the metal roof panel 5 and a second section extending upwards to cover the second flashing 2. In this case, the waterproof underlayment 8 seals the gaps between the metal roof panel 5 and the first flashing 1, and between the first flashing 1 and the second flashing 2, thus preventing rainwater from entering. By providing the waterproof underlayment 8, the gaps between the first flashing 1 and the metal roof panel 5 are completely sealed, further enhancing the waterproofing effect, ensuring that rainwater cannot penetrate, and extending the service life of the structure. It should be noted that, as an alternative implementation, the waterproof underlayment 8 can also be applied to the entire metal roof panel 5 and the first flashing 1 and second flashing 2.

[0049] Specifically, the waterproof pad 8 is made of 1.5mm thick thermoplastic polyolefin (TPO) self-adhesive waterproof membrane, which consists of thermoplastic polyolefin (TPO) sheets, synthetic polymer adhesives and release film.

[0050] like Figure 1 , Figure 5 As shown, in this embodiment, a first sealing layer for waterproofing and thermal insulation is provided on the side of the first flashing 1 away from the metal roof panel 5. The first sealing layer is located below the first flashing 1, and the metal roof panel 5 is located above the first flashing 1. By providing the first sealing layer, when rainwater enters between the first flashing 1 and the metal roof panel 5, the first sealing layer further blocks the rainwater, ensuring that it cannot continue to penetrate, and at the same time, it can isolate the outside and inside of the metal roof panel 5, thus having a thermal insulation effect. It should be noted that, as an alternative implementation, the first sealing layer can also be installed on the metal roof panel 5 by bolts.

[0051] like Figure 5 As shown, in this embodiment, the first sealing layer includes a water-stopping layer 15, a thermal insulation layer 10, and a vapor barrier layer 11 arranged sequentially. Specifically, the water-stopping layer 15 is made of 1.5mm thick thermoplastic polyolefin (TPO) self-adhesive waterproof membrane. The thermal insulation layer 10 is made of 100mm thick rock wool insulation board (density 180kg / m3, fire rating A). The vapor barrier layer 11 is made of 0.3mm thick polyethylene (PE) vapor barrier membrane. By setting the water-stopping layer 15, rainwater can be prevented from directly contacting the thermal insulation layer 10, avoiding the thermal insulation layer 10 from becoming damp and failing. At the same time, the thermal insulation layer 10 also plays a role in heat insulation. The vapor barrier layer 11 is used to block water vapor from entering, ensuring the dryness under the metal roof panel 5. It should be noted that, as an alternative implementation, the water-stopping layer 15 can also be made of other materials: polyethylene-polypropylene composite membrane. The thermal insulation layer 10 can also be made of polyurethane (PU). The vapor barrier layer 11 can also be made of polypropylene (PP) vapor barrier membrane. It should be noted that, as an alternative implementation, the waterstop layer 15 can also be made of asphalt waterproof membrane. The thermal insulation layer 10 can be made of rock wool. The vapor barrier layer 11 can also be made of polyethylene film (PE film).

[0052] like Figure 5 As shown, in this embodiment, a sound insulation layer 12 is provided on the side of the first sealing layer facing away from the first flashing 1. The sound insulation layer 12 is made of 50mm thick sound-absorbing cotton (density 24kg / m3), and a non-woven fabric is provided below the sound insulation layer 12. The non-woven fabric has a fine porous structure, which can prevent the sound-absorbing cotton fibers from escaping and entering the indoor space. By setting the sound insulation layer 12, the sound insulation effect in the room can be guaranteed. It should be noted that, as an alternative implementation, the sound insulation layer 12 can also be set as a polyester fiber sound-absorbing board.

[0053] like Figure 5 As shown, in this embodiment, the sound insulation layer 12 is spaced apart from the first sealing layer. The first sealing layer is located at the upper end of the keel 14, which is a conventional design for metal roofing and is arranged vertically. Two aluminum-zinc coated steel sheets are spaced parallel to each other along the height direction on the keel 14, and the first sealing layer is installed on the upper aluminum-zinc coated steel sheet. The sound insulation layer 12 is located on the lower aluminum-zinc coated steel sheet. By spaced apart from the first sealing layer, the sound insulation layer 12 ensures that rainwater and moisture isolated by the first sealing layer will not affect the sound insulation layer 12. It should be noted that, as an alternative implementation, the sound insulation layer 12 can also be attached to the first sealing layer.

[0054] like Figure 5 As shown, this embodiment also includes a vertically arranged fixing member 13, which is a vertically arranged rectangular steel pipe. The fixing member 13 is used to install the skylight 9, and the skylight 9 is mounted on the rectangular steel pipe. The first flashing 1 and the second flashing 2 are arranged on the side end face of the fixing member 13, located below the skylight 9. By setting the fixing member 13, the skylight 9, the first flashing 1, and the second flashing 2 are installed onto the fixing member 13, ensuring the waterproof effect at the location of the skylight 9. It should be noted that, as an alternative implementation, the fixing member 13 can be omitted, and the installation of the first flashing 1, the second flashing 2, and the metal roof panel 5 can also be achieved.

[0055] like Figure 5 As shown, in this embodiment, the side end face of the fastener 13 has a fixing plate 16 extending toward the first flashing 1, and at least a portion of the first flashing 1 is disposed on the upper end face of the fixing plate 16. By providing the fixing plate 16 on the side end face of the fastener 13, the first flashing 1 is installed onto the upper end face of the fixing plate 16, and the fixing plate 16 bears the weight of the first flashing 1. It should be noted that, as an alternative implementation, the fixing plate 16 may not be provided, and the first flashing 1 may be installed onto the side end face of the fastener 13 by bolts.

[0056] like Figure 5 As shown, in this embodiment, the second section of the first flashing 1 is spaced apart from the fastener 13, that is, there is a gap between the second end of the first flashing 1 and the outer end face of the fastener 13. By spaced apart from the fastener 13, an isolation space is formed between the second section of the first flashing 1 and the fastener 13, preventing moisture from corroding the fastener 13. It should be noted that, as an alternative implementation, the second section of the first flashing 1 and the fastener 13 can also be fitted together.

[0057] Installation method of metal roof waterproof joint structure: Fixture 13 is vertically installed in a predetermined position, and a skylight 9 is installed on fixture 13. Fixture 13 is a vertically installed rectangular steel pipe. A fixing plate 16 extends horizontally outward from the side end face of fixture 13, and the first section of the first flashing 1 is installed on the fixing plate 16. The first section of the first flashing 1 extends horizontally, and the second section extends vertically upward. The second section of the first flashing 1 is spaced apart from fixture 13. A first bend 3 is provided on the second flashing 2, which extends horizontally outward, bends downward, and then bends inward. A second bend 4 is provided on the first flashing 1, and the second bend 4 is an inclined outward-extending plate. The first bend 3 of the second flashing 2 and the second bend 4 of the first flashing 1 are snapped together.

[0058] A metal roofing panel 5 is installed on the first section of the first flashing 1. The metal roofing panel 5 has a bent section 6 that extends towards the second section of the first flashing 1 and bends upward. A waterproof layer 7, which can be a waterproof sealant, is provided between the metal roofing panel 5 and the first flashing 1. A waterproof pad 8 is provided on the side of the metal roofing panel 5 closest to the first flashing 1, covering a portion of the metal roofing panel 5 and extending upward to cover a portion of the second flashing 2. The waterproof pad 8 seals the gaps between the metal roofing panel 5 and the first flashing 1, and between the first flashing 1 and the second flashing 2. A first sealing layer is provided on the side of the first flashing 1 away from the metal roofing panel 5. The first sealing layer includes a water-stopping layer 15, a thermal insulation layer 10, and a vapor barrier layer 11 arranged sequentially. A sound insulation layer 12 is provided on the side of the first sealing layer away from the first flashing 1. The sound insulation layer 12 is spaced apart from the first sealing layer and can be installed on the aluminum-zinc coated profiled steel sheet under the keel 14.

[0059] The working principle of the metal roof waterproof joint structure: When rainwater falls on the metal roof panel 5, the waterproof underlayment 8 seals the gaps between the metal roof panel 5 and the first flashing 1, and between the first flashing 1 and the second flashing 2, thus isolating the rainwater. Simultaneously, due to the bend section 6, even if the waterproof underlayment is damaged, rainwater cannot easily enter directly between the metal roof panel 5 and the first flashing 1. Even if rainwater does enter through the gap between the bend section 6 and the first flashing 1, the waterproof layer 7 can still block it. The first sealing layer can further block the rainwater, ensuring it cannot continue to penetrate. Through this metal roof waterproof joint structure, effective waterproofing between the metal roof and the skylight 9 is achieved, ensuring the waterproof performance and service life of the roof.

[0060] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A waterproof joint structure for metal roofs, characterized in that, include: The first flashing (1) has a first section extending horizontally and a second section extending vertically upward; The second flashing plate (2) is disposed above the first flashing plate (1). The second flashing plate (2) has a first bending part (3) that bends inward. The first flashing plate (1) has a second bending part (4) that is snapped into the first bending part (3). Metal roof panel (5) is disposed on the first section of the first flashing (1), the metal roof panel (5) having a bent section (6) extending toward the second section of the first flashing (1) and bending upward; A waterproof layer (7) is disposed between the metal roof panel (5) and the first flashing (1).

2. The metal roof waterproof joint structure according to claim 1, characterized in that, The bent end of the metal roof panel (5) is attached to the second section of the first flashing (1).

3. The metal roof waterproof joint structure according to claim 1, characterized in that, A waterproof pad (8) is provided on the side of the metal roof panel (5) near the first flashing (1). The waterproof pad (8) has a first section covering the metal roof panel (5) and a second section extending upward to cover the second flashing (2). The waterproof pad (8) is used to isolate water.

4. The metal roof waterproof joint structure according to any one of claims 1-3, characterized in that, The first flashing (1) has a first sealing layer for waterproofing and heat insulation on the side away from the metal roof panel (5).

5. The metal roof waterproof joint structure according to claim 4, characterized in that, The first sealing layer includes a water-stopping layer (15), a heat-insulating layer (10), and a vapor barrier layer (11) arranged sequentially.

6. The metal roof waterproof joint structure according to claim 4, characterized in that, The first sealing layer is provided with a sound insulation layer (12) on the side away from the first flashing (1).

7. The metal roof waterproof joint structure according to claim 6, characterized in that, The sound insulation layer (12) is spaced apart from the first sealing layer.

8. The metal roof waterproof joint structure according to claim 4, characterized in that, Also includes: A vertically arranged fastener (13) is used to install a skylight (9), and the first flashing plate (1) and the second flashing plate (2) are disposed on the side end face of the fastener (13).

9. The metal roof waterproof joint structure according to claim 8, characterized in that, The fastener (13) has a fixing plate (16) extending toward the first flashing plate (1) on its side end face, and at least a portion of the first flashing plate (1) is disposed on the upper end face of the fixing plate (16).

10. The metal roof waterproof joint structure according to claim 8, characterized in that, The second section of the first flashing plate (1) is spaced apart from the fastener (13).

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