Roof stepped drainage waterproof structure

By using a stepped drainage structure on the roof, and utilizing components such as waterproof membrane layers, stainless steel protective plates, and drainage slopes, the problem of water leakage on roofs with low elevation differences has been solved, achieving effective drainage and structural waterproofing, and extending the service life of the roof.

CN224173615UActive Publication Date: 2026-04-28ELKO CONSTR ENG (JIANGSU) CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ELKO CONSTR ENG (JIANGSU) CO LTD
Filing Date
2025-05-12
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

Existing building roofs lack effective drainage space due to low elevation differences, leading to frequent leaks and affecting the lifespan of the roof structure.

Method used

The roof adopts a stepped drainage structure, including components such as a waterproof membrane layer, stainless steel protective plate, inverted triangular concrete support slope and fixing bolts, forming an effective waterproof and drainage system. Combined with sealant and insulation layer, it ensures smooth water drainage.

Benefits of technology

It achieves effective roof drainage under low elevation differences, improves the service life of the roof, prevents water from entering the joint between adjacent roofs, and enhances waterproofing and structural stability.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224173615U_ABST
    Figure CN224173615U_ABST
Patent Text Reader

Abstract

The utility model provides a roof stepped drainage waterproof structure, a waterproof coiled material layer is arranged above a first roof, a second roof and a third roof, the waterproof coiled material layer plays a waterproof role, a drainage structure is arranged on the outer side of the third roof and is used for outputting roof drainage to outdoors, a first limiting part is arranged at the end, close to the second roof, of the first roof, and a second limiting part is arranged at the end, close to the third roof, of the second roof. A second limiting part is arranged at the end, close to the third roof, of the second roof, a third limiting part is arranged at the end, close to the drainage structure, of the third roof, heat preservation layers are arranged on the inner sides of the first limiting part, the second limiting part and the third limiting part, and a fine stone protection layer is arranged above each heat preservation layer. First waterproof structures are arranged between the first roof and the second roof and between the second roof and the third roof, the first waterproof structures are used for preventing water from entering the outer wall part connected with the adjacent roofs to affect the roof structure, roof falling water is effectively drained, and the service life of the roofs is prolonged.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and more specifically, to a stepped drainage and waterproofing structure for roofs. Background Technology

[0002] The roof refers to the surface of a building's roof. Most existing buildings use concrete slabs as the main supporting structure for the roof, providing primary support for the roof and the facilities on it. However, because concrete slabs are prone to water seepage, leaks often occur during rainfall, making roof waterproofing a problem for existing building roofs.

[0003] When the existing roof height difference is small (less than 1m), there is not enough space to install gutters for effective drainage, which will affect the lifespan of the roof structure.

[0004] In summary, how to provide a roof that can effectively drain water under low elevation differences, has a long service life, and has a simple structure is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to propose a stepped drainage and waterproofing structure for roofs that is effective in drainage, has a long service life, and is simple in structure.

[0006] A stepped drainage and waterproofing structure for a roof includes a first roof 1, a second roof 2, a third roof 3, a waterproof membrane layer 4, an insulation layer 5, and a fine stone protective layer 6. The structure is characterized by: a waterproof membrane layer 4 above the first roof 1, second roof 2, and third roof 3, which serves a waterproofing function; a drainage structure 7 on the outer side of the third roof 3 for discharging roof drainage to the outside; a first limiting part 8 near the second roof 2 on the first roof 1; a second limiting part 9 near the third roof 3 on the second roof 2; and a third limiting part 10 near the drainage structure 7 on the third roof 3; an insulation layer 5 on the inner side of each of the first limiting part 8, second limiting part 9, and third limiting part 10; a fine stone protective layer 6 above each insulation layer 5; and a first waterproofing structure 11 between the first roof 1 and the second roof 2, and between the second roof 2 and the third roof 3, for preventing water from entering the exterior wall connecting adjacent roofs and affecting the roof structure.

[0007] Furthermore, the first waterproof structure 11 includes a stainless steel protective plate 12, an inverted triangular concrete support and guide slope 13, and fixing bolts 14. A stainless steel protective plate 12 is provided between the first roof 1 and the second roof 2, and between the second roof 2 and the third roof 3. The stainless steel protective plate 12 is used to protect the exterior wall portion connecting adjacent roofs. Both ends of the stainless steel protective plate 12 are fixedly connected to the first roof 1 and the second roof 2, and the second roof 2 and the third roof 3, by fixing bolts 14. The bottom of the stainless steel protective plate 12 is provided with an inverted triangular concrete support and guide slope 13, which is used to guide falling rainwater to prevent it from affecting the roof structure.

[0008] Furthermore, the outer wall of the inverted triangular concrete support guide slope 13 is also provided with a waterproof mortar layer 15 to improve the waterproofness of the inverted triangular concrete support guide slope 13.

[0009] In some embodiments, the stainless steel protective plate 12 has a first bend 121 at the top, which has rounded corners to facilitate drainage. The stainless steel protective plate 12 has a second bend 122 at the bottom, which abuts against the insulation layer 5 of the second roof 2 and the third roof 3 to improve waterproofing.

[0010] In some embodiments, the fixing bolts 14 are also connected to the stainless steel protective plate 12 and the first roof 1, the second roof 2, and the third roof 3 by sealant to improve the waterproofness of the first waterproof structure 11.

[0011] In some embodiments, an expansion joint 16 is provided between the first roof 1 and the second roof 2, and fireproof rock wool 161 is provided in the expansion joint 16.

[0012] In some embodiments, a polyethylene plastic rod 17 is provided between the insulation layer 5 inside the second limiting part 9 and the waterproof membrane layer 4 above the second roof 2. The polyethylene plastic rod 17 abuts against the side of the top of the expansion joint 16. The polyethylene plastic rod 17 is used to prevent the waterproof membrane layer 4 at the expansion joint 16 from sliding and shifting. The polyethylene plastic rod 17 and the insulation layer 5 are connected by sealing paste to improve sealing and waterproofing.

[0013] In some embodiments, a flow guiding channel 18 is provided between the outer side of the third roof 3 and the drainage structure 7, and a flow guiding slope is provided between the bottom of the flow guiding channel 18 and the input end of the drainage structure 7, and the slope of the flow guiding slope is 5%.

[0014] The beneficial effects of this utility model are as follows: This utility model proposes a stepped drainage and waterproof structure for roofs. A waterproof membrane layer 4 is provided above the first roof 1, the second roof 2, and the third roof 3. The waterproof membrane layer 4 serves as a waterproof layer. A drainage structure 7 is provided on the outside of the third roof 3 to discharge roof drainage to the outside. A first limiting part 8 is provided at the end of the first roof 1 near the second roof 2. A second limiting part 9 is provided at the end of the second roof 2 near the third roof 3. A third limiting part 10 is provided at the end of the third roof 3 near the drainage structure 7. An insulation layer 5 is provided on the inner side of the first limiting part 8, the second limiting part 9, and the third limiting part 10. A fine stone protective layer 6 is provided on top of each insulation layer 5. A first waterproof structure 11 is provided between the first roof 1 and the second roof 2, and between the second roof 2 and the third roof 3. The first waterproof structure 11 is used to prevent water from entering the outer wall part connecting the adjacent roofs and affecting the roof structure, effectively draining roof water and extending the service life of the roof. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a stepped drainage and waterproofing structure for a roof according to this application.

[0016] Figure 2 This is a partially enlarged schematic diagram of the connection between the first and second roof sections of a stepped drainage and waterproofing structure for roofs, as described in this application.

[0017] Figure 3 This is a partially enlarged schematic diagram of the connection between the first and second roof sections of a stepped drainage and waterproofing structure for roofs, as described in this application.

[0018] Figure 4 This is a partially enlarged schematic diagram of the connection between the second and third roof sections of a stepped drainage and waterproofing structure according to this application.

[0019] Figure 5 This is a partially enlarged schematic diagram of the connection between the third roof and the drainage structure of a stepped roof drainage and waterproofing structure according to this application.

[0020] Figure 6 This is a partially enlarged schematic diagram of the connection between the third roof and the drainage structure of a stepped roof drainage and waterproofing structure according to this application.

[0021] Explanation of key component symbols:

[0022] 1. First roof 2. Second roof 3. Third roof 4. Waterproof membrane layer 5. Insulation layer 6. Fine stone protective layer 7. Drainage structure 8. First limiting part 9. Second limiting part 10. Third limiting part 11. First waterproof structure 12. Stainless steel protective plate 13. First bend 121. Second bend 122. Inverted triangular concrete support guide slope 14. Fixing bolt 15. Waterproof mortar layer 16. Expansion joint 17. Fireproof rock wool 18. Polyethylene plastic rod 19. Drainage channel 10.

[0023] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0024] The following embodiments are described to aid in understanding this application. These embodiments are not, and should not be, construed in any way as limiting the scope of protection of this application.

[0025] In the following description, those skilled in the art will recognize that throughout this discussion, components may be described as individual functional units (which may include subunits), but those skilled in the art will recognize that various components or portions thereof may be divided into individual components or may be integrated together (including integrated within a single system or component).

[0026] Furthermore, the connection between components or systems is not intended to be limited to a direct connection; on the contrary, data between these components may be modified, reformatted, or otherwise altered by intermediate components. Additionally, other or fewer connections may be used. It should also be noted that the terms "connection," "link," or "input" should be understood to include direct connections, indirect connections via one or more intermediate devices, and wireless connections. Example 1:

[0027] like Figure 1 The diagram shown is an overall structural schematic of a stepped drainage and waterproofing structure for a roof according to this application; as shown... Figure 2 The diagram shown is a partially enlarged schematic of the connection between the first and second roof sections of a stepped roof drainage and waterproofing structure according to this application; as shown... Figure 3 The diagram shown is a partially enlarged schematic of the connection between the first and second roof sections of a stepped roof drainage and waterproofing structure according to this application; as shown... Figure 4 The image shown is a partially enlarged schematic diagram of the connection between the second and third roof sections of a stepped roof drainage and waterproofing structure according to this application; as shown... Figure 5 The diagram shown is a partially enlarged schematic of the connection between the third roof and the drainage structure of a stepped roof drainage and waterproofing structure according to this application; Figure 6 The diagram shown is a partially enlarged schematic of the connection between the third roof and the drainage structure of a stepped roof drainage and waterproofing structure according to this application.

[0028] A stepped drainage and waterproofing structure for a roof includes a first roof 1, a second roof 2, a third roof 3, a waterproof membrane layer 4, an insulation layer 5, and a fine stone protective layer 6. The structure is characterized by: a waterproof membrane layer 4 above the first roof 1, second roof 2, and third roof 3, which serves a waterproofing function; a drainage structure 7 on the outer side of the third roof 3 for discharging roof drainage to the outside; a first limiting part 8 near the second roof 2 on the first roof 1; a second limiting part 9 near the third roof 3 on the second roof 2; and a third limiting part 10 near the drainage structure 7 on the third roof 3; an insulation layer 5 on the inner side of each of the first limiting part 8, second limiting part 9, and third limiting part 10; a fine stone protective layer 6 above each insulation layer 5; and a first waterproofing structure 11 between the first roof 1 and the second roof 2, and between the second roof 2 and the third roof 3, for preventing water from entering the exterior wall connecting adjacent roofs and affecting the roof structure.

[0029] The first waterproof structure 11 includes a stainless steel protective plate 12, an inverted triangular concrete support and guide slope 13, and fixing bolts 14. A stainless steel protective plate 12 is provided between the first roof 1 and the second roof 2, and between the second roof 2 and the third roof 3. The stainless steel protective plate 12 is used to protect the exterior wall portion connecting adjacent roofs. Both ends of the stainless steel protective plate 12 are fixedly connected to the first roof 1 and the second roof 2, and the second roof 2 and the third roof 3 through fixing bolts 14. The bottom of the stainless steel protective plate 12 is provided with an inverted triangular concrete support and guide slope 13, which is used to guide the falling rainwater to prevent it from affecting the roof structure.

[0030] The outer wall of the inverted triangular concrete support guide slope 13 is also provided with a waterproof mortar layer 15 to improve the waterproofness of the inverted triangular concrete support guide slope 13.

[0031] The stainless steel protective plate 12 has a first bend 121 at the top, which has rounded corners to facilitate drainage. The stainless steel protective plate 12 has a second bend 122 at the bottom, which abuts against the insulation layer 5 of the second roof 2 and the third roof 3 to improve waterproofing.

[0032] The fixing bolts 14 are also connected to the stainless steel protective plate 12 and the first roof 1, the second roof 2, and the third roof 3 by sealant, which is used to improve the waterproofness of the first waterproof structure 11.

[0033] An expansion joint 16 is provided between the first roof 1 and the second roof 2, and fireproof rock wool 161 is provided inside the expansion joint 16.

[0034] A polyethylene plastic rod 17 is also provided between the insulation layer 5 inside the second limiting part 9 and the waterproof membrane layer 4 above the second roof 2. The polyethylene plastic rod 17 abuts against the side of the top of the expansion joint 16. The polyethylene plastic rod 17 is used to prevent the waterproof membrane layer 4 at the expansion joint 16 from sliding and shifting. The polyethylene plastic rod 17 and the insulation layer 5 are connected by sealant to improve sealing and waterproofing.

[0035] A flow guiding channel 18 is provided between the outer side of the third roof 3 and the drainage structure 7. A flow guiding slope is provided between the bottom of the flow guiding channel 18 and the input end of the drainage structure 7. The slope of the flow guiding slope is 5%.

[0036] The beneficial effects of this utility model are as follows: This utility model proposes a stepped drainage and waterproof structure for roofs. A waterproof membrane layer 4 is provided above the first roof 1, the second roof 2, and the third roof 3. The waterproof membrane layer 4 serves as a waterproof layer. A drainage structure 7 is provided on the outside of the third roof 3 to discharge roof drainage to the outside. A first limiting part 8 is provided at the end of the first roof 1 near the second roof 2. A second limiting part 9 is provided at the end of the second roof 2 near the third roof 3. A third limiting part 10 is provided at the end of the third roof 3 near the drainage structure 7. An insulation layer 5 is provided on the inner side of the first limiting part 8, the second limiting part 9, and the third limiting part 10. A fine stone protective layer 6 is provided on top of each insulation layer 5. A first waterproof structure 11 is provided between the first roof 1 and the second roof 2, and between the second roof 2 and the third roof 3. The first waterproof structure 11 is used to prevent water from entering the outer wall part connecting the adjacent roofs and affecting the roof structure, effectively draining roof water and extending the service life of the roof.

[0037] Although this application discloses several aspects and embodiments, other aspects and embodiments will be obvious to those skilled in the art. Various modifications and improvements can be made without departing from the concept of this application, and these all fall within the scope of protection of this application. The various aspects and embodiments disclosed in this application are for illustrative purposes only and are not intended to limit this application. The actual scope of protection of this application is determined by the claims.

Claims

1. A stepped roof drainage and waterproofing structure, comprising a first roof (1), a second roof (2), a third roof (3), a waterproof membrane layer (4), a thermal insulation layer (5), and a fine stone protective layer (6), characterized in that: A waterproof membrane layer (4) is provided above the first roof (1), the second roof (2), and the third roof (3). The waterproof membrane layer (4) serves to waterproof the roof. A drainage structure (7) is provided on the outside of the third roof (3) to drain the roof water to the outside. A first limiting part (8) is provided at the end of the first roof (1) near the second roof (2). A second limiting part (9) is provided at the end of the second roof (2) near the third roof (3). A third limiting part (10) is provided at the end of the third roof (3) near the drainage structure (7). An insulation layer (5) is provided on the inside of the first limiting part (8), the second limiting part (9), and the third limiting part (10). A fine stone protective layer (6) is provided on top of each insulation layer (5). A first waterproof structure (11) is provided between the first roof (1) and the second roof (2) and between the second roof (2) and the third roof (3). The first waterproof structure (11) is used to prevent water from entering the outer wall part connecting the adjacent roofs and affecting the roof structure.

2. The stepped roof drainage and waterproofing structure as described in claim 1, characterized in that: The first waterproof structure (11) includes a stainless steel protective plate (12), an inverted triangular concrete support guide slope (13), and fixing bolts (14). A stainless steel protective plate (12) is provided between the first roof (1) and the second roof (2), and between the second roof (2) and the third roof (3). Used for protection The exterior wall section connecting adjacent roofs has stainless steel protective plates (12) at both ends fixedly connected to the first roof (1) and the second roof (2) and the third roof (3) by fixing bolts (14). The bottom of the stainless steel protective plate (12) is provided with an inverted triangular concrete support guide slope (13), which is used to guide the falling rainwater to prevent it from affecting the roof structure.

3. The stepped roof drainage and waterproofing structure as described in claim 1, characterized in that: The outer wall of the inverted triangular concrete support guide slope (13) is also provided with a waterproof mortar layer (15) to improve the waterproofness of the inverted triangular concrete support guide slope (13).

4. The stepped roof drainage and waterproofing structure as described in claim 2, characterized in that: The stainless steel protective plate (12) has a first bend (121) at the top, which is rounded to facilitate drainage. The stainless steel protective plate (12) has a second bend (122) at the bottom, which abuts against the insulation layer (5) of the second roof (2) and the third roof (3) to improve waterproofing.

5. The stepped roof drainage and waterproofing structure as described in claim 2, characterized in that: The fixing bolts (14) are also connected to the stainless steel protective plate (12) and the first roof (1), the second roof (2) and the third roof (3) by sealant, which is used to improve the waterproofness of the first waterproof structure (11).

6. The stepped drainage and waterproofing structure for roofs as described in claim 1, characterized in that: An expansion joint (16) is provided between the first roof (1) and the second roof (2), and fireproof rock wool (161) is provided in the expansion joint (16).

7. The stepped drainage and waterproofing structure for roofs as described in claim 1, characterized in that: A polyethylene plastic rod (17) is provided between the insulation layer (5) inside the second limiting part (9) and the waterproof membrane layer (4) above the second roof (2). The polyethylene plastic rod (17) abuts against the side of the top of the expansion joint (16). The polyethylene plastic rod (17) is used to prevent the waterproof membrane layer (4) at the expansion joint (16) from sliding and shifting. The polyethylene plastic rod (17) and the insulation layer (5) are sealed and connected by sealant to improve sealing and waterproofing.

8. The stepped drainage and waterproofing structure for roofs as described in claim 1, characterized in that: A flow channel (18) is provided between the outer side of the third roof (3) and the drainage structure (7). A flow slope is provided between the bottom of the flow channel (18) and the input end of the drainage structure (7). The slope of the flow slope is 5%.