Roof vertical sleeve waterproof structure and construction method

Abstract

This invention belongs to the field of building waterproofing technology, and particularly relates to a roof vertical sleeve waterproofing structure and construction method, comprising: a roof structural slab with a vertical sleeve pre-embedded therein, and a roof-exit pipe installed inside the vertical sleeve, creating a gap between the vertical sleeve and the roof-exit pipe; a flexible filling structure including a rigid thermal insulation pad dividing the gap into upper and lower cavities, both cavities being filled with foamed sealant and a mortar sealing layer, wherein the top surface of the mortar sealing layer in the upper cavity is lower than the top of the vertical sleeve, creating a concave area at the top of the vertical sleeve; a waterproof layer extending sequentially along the roof structural slab, the outer side of the vertical sleeve, and the concave area to be fixed to the outer side of the roof-exit pipe; a thermal insulation mortar layer installed on the outer periphery and top of the vertical sleeve; and a weather-resistant flexible flap installed circumferentially on the roof-exit pipe and fixed to the top surface of the thermal insulation mortar layer. This invention can significantly improve the waterproofing reliability and long-term service stability of the roof-exit pipe joint.

Description

Technical Field

[0001] This invention relates to the field of building waterproofing technology, and in particular to a vertical sleeve waterproofing structure for roofs and its construction method. Background Technology

[0002] Vertical sleeves extending from the roof are a critical weak point in roof waterproofing. They are constantly subjected to complex conditions such as structural settlement, temperature deformation, pipe movement, and outdoor rainwater and UV radiation, requiring a high degree of systematicness and durability in their waterproofing construction. Currently, traditional sleeve waterproofing construction methods are simple and crude, often employing single-layer sealing and waterproofing, failing to form an integrated protection system. Common problems include a single sealing structure, insufficient waterproofing layers, and poor adaptability to deformation, easily leading to root-level water seepage and cracking. Furthermore, the lack of dynamic finished product protection measures increases the risk of damage to waterproofing accessories, and the absence of specialized thermal insulation and anti-aging structures results in significant thermal bridging effects, easy material aging and failure, and poor overall waterproofing closure, making it difficult to meet the construction requirements of modern roofs for long-term waterproofing and durable use.

[0003] In view of this, it is necessary to design a roof vertical sleeve waterproofing structure and construction method to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a roof vertical sleeve waterproofing structure and construction method, which effectively solves the common problems of traditional sleeve waterproofing, such as simple structure, easy cracking and water leakage, high finished product damage rate, and failure due to temperature difference aging, and significantly improves the waterproofing reliability and long-term service stability of roof pipe joints.

[0005] To achieve the above-mentioned objectives, the present invention provides a roof vertical sleeve waterproofing structure, comprising: A vertical sleeve with one end extending above the roof structure slab is pre-embedded on it. A pipe leading out of the roof is installed inside the vertical sleeve, so that a circumferential gap is formed between the vertical sleeve and the pipe leading out of the roof. The flexible filling structure includes a rigid insulation pad that divides the gap to form an upper cavity and a lower cavity. Both cavities are filled with foamed sealant, and both cavities are provided with a mortar sealing layer at the end of the foamed sealant away from the rigid insulation pad. The top surface of the mortar sealing layer of the upper cavity is lower than the top of the vertical sleeve, so that the top of the vertical sleeve forms a concave area. The waterproof layer has one end located on the top surface of the roof structure slab, and the other end extends sequentially along the top surface of the roof structure slab, the outside of the vertical sleeve, and the concave area to be fixed to the outside of the pipe exiting the roof. The waterproof layer is fixed to the pipe exiting the roof at an end that is higher than the top surface of the vertical sleeve. The thermal insulation mortar layer is applied to the outer perimeter and top of the vertical sleeve, and at least fully covers the upper part of the waterproof layer; A weather-resistant flexible flap is installed on the roof outlet pipe, including a main body fixed circumferentially on the roof outlet pipe and a folding part located around the main body and foldable relative to the main body, the folding part covering and fixed on the top surface of the thermal insulation mortar layer.

[0006] As a further improvement of the present invention, the top of the thermal insulation mortar layer is inclined downwards away from the center of the pipe exiting the roof, and the folded part is attached and fixed to the top of the thermal insulation mortar layer in the same inclined shape.

[0007] As a further improvement of the present invention, the outer periphery and top of the vertical sleeve are both embedded in the thermal insulation mortar layer, so that a mortise and tenon connection structure is formed between the top of the vertical sleeve and the upper part of the thermal insulation mortar layer.

[0008] As a further improvement of the present invention, the distance between the rigid insulation pad and the bottom surface of the vertical sleeve is 1 / 3 to 2 / 3 of the height of the vertical sleeve.

[0009] As a further improvement of the present invention, a water-stop steel plate extending into the roof structure slab is provided on the outer periphery of the vertical sleeve.

[0010] As a further improvement of the present invention, both the weather-resistant flexible flap and the thermal insulation mortar layer are provided with a silicone-acrylic coating layer.

[0011] As a further improvement of the present invention, a roof insulation layer, a roof leveling layer and a roof protective layer are sequentially provided on the top surface of the roof structure panel.

[0012] As a further improvement of the present invention, the portion of the waterproof layer located on the roof structural panel is positioned below the roof insulation layer.

[0013] The present invention also provides a construction method for the aforementioned roof vertical sleeve waterproofing structure, comprising the following steps: S1. A rigid insulation pad is installed to separate the gap between the vertical sleeve and the roof pipe, forming an upper cavity and a lower cavity. Foam sealant is filled into the two cavities, and a mortar sealing layer is installed at the end of the two cavities away from the rigid insulation pad. The top surface of the mortar sealing layer of the upper cavity is lower than the top of the vertical sleeve, so that the top of the vertical sleeve has a concave area. S2. Set a waterproof layer with one end located on the top surface of the roof structure slab and the other end extending sequentially along the top surface of the roof structure slab, the outside of the vertical sleeve, and the concave area to the outside of the pipe that exits the roof. S3. An insulating mortar layer shall be installed around the outer periphery and top of the vertical sleeve, and the insulating mortar layer shall at least fully cover the upper part of the waterproof layer. Install weather-resistant flexible flaps that are distributed around the circumference of the pipes on the roof, and fix the bottom surface of the weather-resistant flexible flaps to the top surface of the thermal insulation mortar layer. Among them, the weather-resistant flexible flap is installed on the roof pipe before the rigid insulation pad is installed or after the waterproof layer is completed.

[0014] As a further improvement of the present invention, the weather-resistant flexible flap and the thermal insulation mortar layer are also coated with a silicone-acrylic coating.

[0015] The beneficial effects of this invention are: 1. This invention abandons the traditional simple construction method of sealing with mortar and filling with sealant. It uses a rigid insulation pad to separate the gap between the roof pipe and the vertical sleeve to form an upper cavity and a lower cavity. Foamed sealant is filled into the two cavities, and a mortar sealing layer is set at the bottom of the lower cavity and the top of the upper cavity. The elasticity of the foamed sealant can adapt to the slight deformation of the roof pipe and offset the micro-deformation cracks in the structure. At the same time, the mortar sealing layer can improve the overall density and crack resistance of the root, thus solving the common problems of water seepage and leakage at the root of the roof pipe from the structural source.

[0016] 2. The rigid insulation pads can serve as initial fixing components to initially fix the position of pipes protruding from the roof during construction. They can also provide a bonding surface for the filling of foam sealant, ensuring the density of the foam sealant in the gaps, so as to ensure that the elasticity of the foam sealant can adapt to the slight deformation of the pipes protruding from the roof.

[0017] 3. This invention, by covering the outside and top of the vertical sleeve with a layer of insulating mortar, can eliminate the thermal bridging effect at the pipe root and avoid leakage caused by temperature difference cracking. Specifically, by placing the mortar sealing layer inside the upper cavity, a concave area is formed at the top of the vertical sleeve. The upper part of the insulating mortar layer is filled into this concave area, creating a mortise and tenon connection between the top of the insulating mortar layer and the vertical sleeve. The fastening effect of the mortise and tenon connection reduces the shrinkage deformation of the insulating mortar layer away from the center of the vertical sleeve due to temperature differences, thereby reducing the probability of cracking of the insulating mortar layer and the formation of gaps between the insulating mortar layer and the vertical sleeve. Furthermore, the mortise and tenon connection between the top of the insulating mortar layer and the vertical sleeve also avoids the hollow phenomenon that easily occurs when the insulating mortar layer and the top of the vertical sleeve are connected in a planar manner.

[0018] 4. This invention, by installing weather-resistant flexible flaps on the roof-exit pipes, allows the flaps to be folded upwards during construction to avoid affecting the work below. They also provide some rain protection during rainy weather. After construction, the flaps are folded downwards and overlapped to the insulation mortar layer, resulting in a downward-sloping top of the roof's vertical sleeve waterproof structure, facilitating rapid rainwater drainage. The waterproof layer is attached and fixed to the outer end of the roof-exit pipe, below the weather-resistant flexible flaps and above the top of the vertical sleeve. This design ensures that as the protective effect of the flexible flaps weakens over time, rainwater seeping into the insulation mortar layer is fully utilized for waterproofing. This prevents rainwater from flowing past the sealing mortar layer and into the foamed sealant area where the waterproof layer's tightening point is lower than the top of the vertical sleeve, thus significantly reducing the overall waterproof performance of the roof's vertical sleeve waterproof structure. Attached Figure Description

[0019] Figure 1 This is a structural diagram of a vertical waterproof sleeve structure for a roof.

[0020] Figure 2 This is a structural diagram of the vertical sleeve and the roof structural slab.

[0021] Figure 3 This is a schematic diagram illustrating the construction process of the vertical sleeve waterproofing structure on the roof.

[0022] Figure Labels 11. Roof structural panel; 111. Roof insulation layer; 112. Roof leveling layer; 113. Roof protective layer; 114. Chamfered area; 12. Vertical sleeve; 121. Water-stop steel plate; 13. Pipes exiting the roof; 14. Gap; 21. Rigid insulation gasket; 22. Foamed sealant; 23. Mortar sealing layer; 24. Recessed area; 30. Waterproof layer; 31. Aluminum alloy pipe clamp; 40. Insulating mortar layer; 50. Weather-resistant flexible flap; 51. Main body; 52. Folded part; 60. Silicone-acrylic coating layer. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0025] Additionally, it should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] like Figures 1-3 As shown, the present invention provides a roof vertical sleeve waterproofing structure, comprising: A roof structure slab 11 has a vertical sleeve 12 embedded on it, with one end extending to the top of the roof structure slab 11. A roof outlet pipe 13 is provided inside the vertical sleeve 12, so that a circumferential gap 14 is formed between the vertical sleeve 12 and the roof outlet pipe 13. The flexible filling structure includes a rigid insulation pad 21 that divides the gap 14 to form an upper cavity and a lower cavity. Both cavities are filled with foam sealant 22, and both cavities are provided with a mortar sealing layer 23 at the end of the foam sealant 22 away from the rigid insulation pad 21. The top surface of the mortar sealing layer 23 of the upper cavity is lower than the top of the vertical sleeve 12, so that the top of the vertical sleeve 12 forms a concave area 24. The waterproof layer 30 has one end located on the top surface of the roof structure slab 11, and the other end extends sequentially along the top surface of the roof structure slab 11, the outside of the vertical sleeve 12, and the recessed area 24 to the outside of the roof outlet pipe 13. The waterproof layer 30 is fixed to the roof outlet pipe 13 at one end, which is higher than the top surface of the vertical sleeve 12. The thermal insulation mortar layer 40 is installed on the outer periphery and top of the vertical sleeve 12, and at least fully covers the upper part of the waterproof layer 30; The weather-resistant flexible flap 50 is installed on the roof outlet pipe 13 and includes a main body 51 that is circumferentially fixed on the roof outlet pipe 13 and a folding part 52 located around the main body 51 and foldable relative to the main body 51. The folding part 52 covers and is fixed on the top surface of the thermal insulation mortar layer 40.

[0027] For example, the vertical sleeve 12 is positioned and fixed synchronously with the reinforcement binding of the roof structural slab 11, and is cast into shape in one go with the concrete of the roof structural slab 11. The bottom of the sleeve is flush with the bottom surface of the roof structural slab 11, and the top is 500mm higher than the finished surface of the roof structural slab 11.

[0028] A water-stop steel plate 121 extending into the roof structure slab 11 is provided around the outer periphery of the vertical sleeve 12. The water-stop steel plate 121 can improve the structure's anti-seepage capability from the source by lengthening the seepage path.

[0029] For example, the distance between the rigid insulation pad 21 and the bottom surface of the vertical sleeve 12 is 1 / 3 to 2 / 3 of the height of the vertical sleeve 12. The orientation of the rigid insulation pad 21 ensures that both the upper and lower cavities have sufficient volume, so that when the foamed sealant 22 is filled into the upper and lower cavities, the foamed sealant 22 in the upper and lower cavities has sufficient deformation space to accommodate slight deformation of the roof pipe 13.

[0030] In this example, the rigid insulation pad 21 is an extruded polystyrene board pad.

[0031] For example, the outer periphery and top of the vertical sleeve 12 are embedded within the thermal insulation mortar layer 40, forming a mortise and tenon connection between the top of the vertical sleeve 12 and the upper part of the thermal insulation mortar layer 40. This mortise and tenon connection between the top of the thermal insulation mortar layer 40 and the vertical sleeve 12 not only reduces the shrinkage deformation of the thermal insulation mortar layer 40 away from the center of the vertical sleeve 12 due to temperature differences, but also reduces the probability of cracking of the thermal insulation mortar layer 40 and the formation of gaps between the thermal insulation mortar layer 40 and the vertical sleeve 12; it also avoids the hollow phenomenon that easily occurs when the thermal insulation mortar layer 40 and the top of the vertical sleeve 12 are connected in a planar manner.

[0032] For example, the top of the thermal insulation mortar layer 40 is inclined downwards away from the center of the roof pipe 13, and the folded part 52 is attached and fixed to the top of the thermal insulation mortar layer 40 in the same inclined shape, so that the top of the roof vertical sleeve 12 waterproof structure is inclined downwards away from the center, which can quickly guide rainwater.

[0033] The waterproof layer 30 is attached and fixed to the outside of the roof pipe 13, with one end located below the weather-resistant flexible flap 50 and above the top of the vertical sleeve 12. This design allows the waterproof layer 30 to be fully utilized for waterproofing when rainwater seeps into the thermal insulation mortar layer 40, as the protective effect of the weather-resistant flexible flap 50 weakens over time. This prevents rainwater from flowing past the sealing joint of the waterproof layer 30 and into the mortar sealing layer 23 and the part filled with foamed sealant 22, which would otherwise significantly reduce the waterproofing effect of the waterproof layer 30 and the overall waterproofing performance of the roof vertical sleeve 12 waterproofing structure.

[0034] For example, both the weather-resistant flexible flap 50 and the thermal insulation mortar layer 40 are provided with a silicone-acrylic coating layer 60.

[0035] For example, a roof insulation layer 111, a roof leveling layer 112, and a roof protective layer 113 are sequentially provided on the top surface of the roof structure panel 11. The waterproof layer 30 is partially located between the roof structure panel 11 and the roof insulation layer 111, and the portion of the roof structure panel 11 exposed is covered by the insulation mortar layer 40.

[0036] This invention also provides a construction method for a vertical roof waterproofing sleeve structure, comprising the following steps: S1. The vertical sleeve 12 is integrally cast with the roof structure plate 11, and a water-stop steel plate 121 extending to the roof structure plate 11 is set on the outer periphery of the vertical sleeve 12. The roof pipe 13 is placed inside the vertical sleeve 12. Rigid insulation pads 21 are used to initially fix the roof pipe 13 and the vertical sleeve 12. At the same time, the gap 14 between the vertical sleeve 12 and the roof pipe 13 is divided to form an upper cavity and a lower cavity. Foam sealant 22 is filled into the two cavities. During filling, space is reserved for the construction of mortar sealing layer 23. The upper cavity is reserved at the top 100mm and the lower cavity is reserved at the bottom 50mm. The reserved space is filled with waterproof mortar in layers with a height of 50mm, and the surface is smoothed and polished. This results in a mortar sealing layer 23 being formed at the end of the two cavities away from the rigid insulation pads 21 where the foam sealant 22 is located. At the same time, a concave area 24 is formed at the top of the vertical sleeve 12.

[0037] S2. Clean and repair the base layer of the roof structure slab 11, and use mortar to chamfer the inside corner where the vertical sleeve 12 meets the roof structure slab 11 to form a chamfered area 114.

[0038] The lower end is located on the top surface of the roof structure slab 11, and the upper end extends sequentially along the top surface of the roof structure slab 11, the chamfered area 114, the outer side of the vertical sleeve 12, and the concave area 24 to the waterproof layer 30 fixed on the outer side of the roof outlet pipe 13. The waterproof layer 30 is perfectly attached to the top surface of the roof structure slab 11, the chamfered surface, the outer surface of the vertical sleeve 12, and the surface of the concave area 24. The upper end of the waterproof layer 30 is higher than the top surface of the vertical sleeve 12 and is fixed to the roof outlet pipe 13 with an aluminum alloy pipe clamp 31 for waterproof sealing.

[0039] S3. Complete the construction of the roof insulation layer 111, the roof leveling layer 112 and the roof protective layer 113 on the roof structure slab 11 in sequence to ensure the integrity of the overall waterproof and thermal insulation system of the roof. A thermal insulation mortar layer 40 is installed around the outer perimeter and top of the vertical sleeve 12, ensuring that the thermal insulation mortar layer 40 fully covers at least the upper part of the waterproof layer 30. In this example, the waterproof layer 30 extends from below the roof insulation layer 111 to the outside of the vertical sleeve 12, and the portion of the roof protective layer 113 exposed is covered by the thermal insulation mortar layer 40. The thermal insulation mortar layer 40 located on the outside of the vertical sleeve 12 is applied using a layered troweling method, and its thickness is strictly controlled to be no less than 30mm to ensure uniform thickness and good adhesion. The insulation mortar layer 40 at the top of the vertical sleeve 12 is specially filled with a multi-stage filling and layered compaction method. This ensures that the insulation mortar layer 40 at the top and side walls of the vertical sleeve 12 is fully filled, compacted, and smoothed, eliminating quality defects such as cavities, gaps, and holes. This achieves a seamless connection between the vertical sleeve 12 and the roof insulation layer 111, forming an overall closed insulation structure and improving the overall performance of the vertical sleeve 12 in terms of insulation, crack resistance, and seepage prevention.

[0040] Furthermore, weather-resistant flexible flaps 50 are arranged around the roof pipe 13 and distributed in a circumferential direction, and the bottom surface of the weather-resistant flexible flaps 50 is fixed to the top surface of the thermal insulation mortar layer 40. The weather-resistant flexible flap 50 can be installed on the roof-exit pipe 13 before or after the rigid insulation pad 21 is installed. If the weather-resistant flexible flap 50 is installed on the roof-exit pipe 13 before the rigid insulation pad 21 is installed, the weather-resistant flexible flap 50 should be folded upwards during construction to avoid damage and to prevent it from affecting the construction of the rigid insulation pad 21, foamed sealant 22, waterproof layer 30, and insulation mortar layer 40 located below it. It can also provide some rain protection during rainy days. After the insulation mortar layer 40 reaches its design strength, the weather-resistant flexible flap 50 should be folded down and fixed to the top surface of the insulation mortar layer 40.

[0041] After installation, the weather-resistant flexible flap 50 is conical in shape. The weather-resistant flexible flap 50 is connected and fixed to the roof pipe 13 by reliable methods such as hot melting and adhesive bonding, ensuring that the connection is tight without gaps 14 and cracks, forming an overall waterproof structure.

[0042] Specifically, for vulnerable areas prone to water seepage, such as the joints between the weather-resistant flexible flap 50 and the thermal insulation mortar layer 40, and corners and dead angles, high-quality weather-resistant silicone sealant is used for caulking and sealing. Before application, the joints are cleaned and dried. During the application process, the sealant layer is ensured to be continuous, full, without breaks or air bubbles, and smoothed to achieve 100% sealing of the joints, eliminating the risk of rainwater seepage. After the weather-resistant silicone sealant has fully cured, a comprehensive surface protection layer is applied. High-performance silicone acrylic protective coating is sprayed onto the exposed surface of the thermal insulation mortar layer 40, the surface of the weather-resistant flexible flap 50, and within a 250mm range at the junction of the vertical sleeve 12 and the roof structure panel 11, forming a continuous weather-resistant protective film that effectively resists external erosion such as ultraviolet rays, rainwater erosion, and temperature cracking. This achieves integrated insulation, sealing, and protection of the vertical sleeve 12, significantly improving the quality of joint construction, waterproofing and insulation effects, and extending the service life of the project. The silicone-acrylic protective coating is applied in one primer layer and one top layer layer. The primer layer is an alkali-resistant primer, and the top layer is a silicone-acrylic coating.

[0043] For example, in step S2, the portion of the waterproof layer 30 that wraps around the roof pipe 13 has a wrapping height of not less than 150mm.

[0044] Compared with the existing technology that fills the gap 14 with rigid materials such as waterproof mortar, which leaves no room for deformation adaptation of the roof pipes, the present invention achieves an organic combination of flexible sealing and water-stopping and rigid mortar protection by precisely reserving a layered construction cavity of 100 mm at the top and 50 mm at the bottom. It utilizes the elasticity of the foamed sealant 22 to adapt to slight deformation of the pipes and offset the micro-deformation cracks in the structure, while relying on the 50 mm thick rigid layer of waterproof mortar to improve the overall density and crack resistance of the root. Together with the central water-stopping steel plate 121 of the sleeve, multiple anti-seepage defense lines are formed, which greatly extends the seepage path and solves the common problems of water seepage and leakage at the root of the roof pipes 13 from the structural root.

[0045] This invention eliminates thermal bridging at the pipe root by covering the outer side and top of the vertical sleeve 12 with more than 30mm of insulating mortar, thus preventing leakage caused by temperature difference cracking. Then, silicone sealant is used to seal minor gaps. Finally, a silicone-based protective coating is sprayed onto the entire structure to effectively resist external erosion such as ultraviolet rays, rainwater erosion, and temperature fluctuations. This composite system simultaneously achieves multiple functions including insulation, sealing, anti-aging, and waterproofing, significantly improving the service life and stability of the waterproof structure of the roof vertical sleeve 12.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A vertical sleeve waterproofing structure for roofs, characterized in that, include: A vertical sleeve with one end extending above the roof structure slab is pre-embedded on it. A pipe leading out of the roof is installed inside the vertical sleeve, so that a circumferential gap is formed between the vertical sleeve and the pipe leading out of the roof. The flexible filling structure includes a rigid insulation pad that divides the gap to form an upper cavity and a lower cavity. Both cavities are filled with foamed sealant, and both cavities are provided with a mortar sealing layer at the end of the foamed sealant away from the rigid insulation pad. The top surface of the mortar sealing layer of the upper cavity is lower than the top of the vertical sleeve, so that the top of the vertical sleeve forms a concave area. The waterproof layer has one end located on the top surface of the roof structure slab, and the other end extends sequentially along the top surface of the roof structure slab, the outside of the vertical sleeve, and the concave area to be fixed to the outside of the pipe exiting the roof. The waterproof layer is fixed to the pipe exiting the roof at an end that is higher than the top surface of the vertical sleeve. The thermal insulation mortar layer is applied to the outer perimeter and top of the vertical sleeve, and at least fully covers the upper part of the waterproof layer; A weather-resistant flexible flap is installed on the roof outlet pipe, including a main body fixed circumferentially to the roof outlet pipe and a folding part located around the main body and foldable relative to the main body, the folding part covering and fixed on the top surface of the thermal insulation mortar layer.

2. The roof vertical sleeve waterproofing structure according to claim 1, characterized in that: The top of the thermal insulation mortar layer is inclined downwards away from the center of the pipe exiting the roof, and the folded part is attached and fixed to the top of the thermal insulation mortar layer in the same inclined shape.

3. The roof vertical sleeve waterproofing structure according to claim 1, characterized in that: The outer periphery and top of the vertical sleeve are embedded in the thermal insulation mortar layer, so that the top of the vertical sleeve and the upper part of the thermal insulation mortar layer form a mortise and tenon connection structure.

4. The roof vertical sleeve waterproofing structure according to claim 1, characterized in that: The distance between the rigid insulation pad and the bottom surface of the vertical sleeve is 1 / 3 to 2 / 3 of the height of the vertical sleeve.

5. The roof vertical sleeve waterproofing structure according to claim 1, characterized in that: The vertical sleeve is provided with a water-stop steel plate extending into the roof structure slab.

6. The roof vertical sleeve waterproofing structure according to claim 1, characterized in that: Both the weather-resistant flexible flap and the thermal insulation mortar layer are coated with a silicone-acrylic coating.

7. The roof vertical sleeve waterproofing structure according to claim 1, characterized in that: The roof structure slab is also provided with a roof insulation layer, a roof leveling layer and a roof protective layer in sequence on its top surface.

8. The roof vertical sleeve waterproofing structure according to claim 7, characterized in that: The waterproof layer located on the roof structural slab is positioned below the roof insulation layer.

9. A construction method for a roof vertical sleeve waterproofing structure as described in claim 1, characterized in that, Includes the following steps: S1. A rigid insulation pad is installed to separate the gap between the vertical sleeve and the roof pipe, forming an upper cavity and a lower cavity. Foam sealant is filled into the two cavities, and a mortar sealing layer is installed at the end of the two cavities away from the rigid insulation pad. The top surface of the mortar sealing layer of the upper cavity is lower than the top of the vertical sleeve, so that the top of the vertical sleeve has a concave area. S2. Set a waterproof layer with one end located on the top surface of the roof structure slab and the other end extending sequentially along the top surface of the roof structure slab, the outside of the vertical sleeve, and the concave area to the outside of the pipe that exits the roof. S3. An insulating mortar layer shall be installed around the outer periphery and top of the vertical sleeve, and the insulating mortar layer shall at least fully cover the upper part of the waterproof layer. Install weather-resistant flexible flaps that are distributed around the circumference of the pipes on the roof, and fix the bottom surface of the weather-resistant flexible flaps to the top surface of the thermal insulation mortar layer. Among them, the weather-resistant flexible flap is installed on the roof pipe before the rigid insulation pad is installed or after the waterproof layer is completed.

10. The construction method of the roof vertical sleeve waterproofing structure according to claim 9, characterized in that: The weather-resistant flexible flap and the thermal insulation mortar layer are also coated with a silicone-acrylic coating.

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