A waterproof structure for aluminum panel coping of a roof parapet wall

By employing multiple waterproof layers and base treatment at the aluminum panel coping of the parapet wall, the instability of waterproof membrane under wind and temperature differences was resolved, resulting in a more stable waterproof effect and construction quality.

CN224431846UActive Publication Date: 2026-06-30CHINA CONSTR EIGHTH ENG BUREAU TECH CONSTR CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA CONSTR EIGHTH ENG BUREAU TECH CONSTR CO LTD
Filing Date
2025-06-25
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In areas with strong winds, the waterproof membrane of the aluminum panel coping of the parapet wall is easily blown away by the wind, causing the fasteners to loosen or come off. Furthermore, long-term exposure to ultraviolet rays and temperature differences can easily lead to aging and cracking, resulting in an unstable waterproof structure.

Method used

The system combines materials such as aluminum plate embedded parts, angle steel, waterproof galvanized steel plate, anti-slip waterproof coating, waterproof membrane, ethylene film, insulation board, fine stone concrete and mesh cloth to form multiple waterproof layers. Combined with rounded corners and drip edge design, the waterproof performance is enhanced, and stability is ensured through base treatment and construction sequence.

Benefits of technology

It effectively prevents the membrane from loosening and aging, improves the wind resistance and durability of the waterproof structure, reduces the risk of leakage, and ensures construction quality and material utilization efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to a waterproof structure, belonging to the field of building waterproofing technology, specifically a waterproof structure for an aluminum plate coping on a roof parapet wall. It includes a wall and an insulation board, and further includes: an aluminum plate embedded part, which is fixedly installed on the inner top of the wall, with a pair of angle steel welded to its top; and a slope-finding layer, which is fixedly installed on one side of the wall, with a leveling layer fixedly installed on its surface. This utility model effectively reduces the risk of leakage and solves the problems of existing structures where, in areas with strong winds, the edges of the waterproof membrane are easily blown by the wind, leading to loose fasteners or the membrane detaching from the groove, resulting in unstable components. It also addresses the issue of waterproof membranes being prone to aging and cracking when exposed to ultraviolet radiation and temperature differences for extended periods, necessitating the installation of a protective layer such as fine aggregate concrete.
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Description

Technical Field

[0001] This utility model relates to the field of building waterproofing technology, and in particular to a waterproof structure for an aluminum plate coping of a roof parapet wall. Background Technology

[0002] In building roofing projects, the parapet wall, as the vertical enclosure structure at the edge of the roof, not only undertakes the function of safety protection, but is also an important component of the roof waterproofing system.

[0003] A search revealed Chinese patent CN213087243U, which discloses a waterproof structure for a roof parapet wall. This structure includes a parapet wall, a protrusion, a waterproof membrane, and fasteners. The parapet wall is installed on the structural floor slab. The protrusion is located on the side of the parapet wall closest to the structural floor slab, forming a groove on the vertical side closest to the floor slab. The inner vertical wall of the groove is located on the side of the parapet wall closest to the floor slab. The waterproof membrane is attached to both the structural floor slab and the side of the parapet wall closest to the floor slab, with the end of the waterproof membrane near the top of the parapet wall located between the protrusion and the floor slab, extending into the groove. The fasteners are located between the groove and the floor slab, passing through the waterproof membrane and inserted into the parapet wall to secure it. This waterproof structure avoids damaging the longitudinal reinforcing bars of the structural columns and prevents waste of the waterproof membrane.

[0004] Based on the above search and existing technology, the findings were as follows:

[0005] In areas with strong winds, the edges of the waterproof membrane are easily blown by the wind, causing the fasteners to loosen or the membrane to detach from the groove, resulting in unstable components. The waterproof membrane is also prone to aging and cracking when exposed to ultraviolet rays and temperature differences for a long time. Therefore, there are certain limitations to setting up a protective layer such as fine stone concrete. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model proposes a waterproof structure for aluminum panel coping of roof parapet walls, which can reduce the potential leakage risks at traditional aluminum panel coping joints of parapet walls.

[0007] The technical solution to achieve the purpose of this utility model is: a waterproof structure for aluminum plate coping of a roof parapet wall, including a wall and an insulation board, and further comprising;

[0008] An aluminum plate embedded part is fixedly installed on the inner top of the wall, and a pair of angle steels are welded to the top of the aluminum plate embedded part.

[0009] A slope-finding layer is fixedly installed on one side of the wall, and a leveling layer is fixedly installed on the surface of the slope-finding layer.

[0010] Preferably, a waterproof galvanized steel plate is fixedly installed on the outer top of the wall, and a fastening bolt is threaded between the waterproof galvanized steel plate and the angle steel.

[0011] Preferably, an anti-slip and waterproof coating one is fixedly installed between the wall and the leveling layer one, an anti-slip and waterproof coating two is fixedly installed on the outside of the anti-slip and waterproof coating one, and an asphalt waterproof coating is provided between the anti-slip and waterproof coating one and the anti-slip and waterproof coating two.

[0012] Preferably, a waterproof membrane is fixedly installed on the outer side of the second anti-slip waterproof coating, an ethylene film is fixedly installed on one side of the surface of the waterproof membrane, and a leveling layer is fixedly installed between the ethylene film and the insulation board.

[0013] Preferably, fine aggregate concrete is fixedly installed on the surface of the insulation board, and a mesh cloth is fixedly installed on the side of the insulation board. The fine aggregate concrete abuts against the mesh cloth, and a metal plate is fixedly installed on the outside of the mesh cloth. An anchor bolt is provided between one end of the metal plate and the fine aggregate concrete.

[0014] Preferably, a pair of fastening bolts are threaded between the other end of the wall and the metal plate, and both ends of the wall, fine stone concrete and metal plate are coated with weather-resistant sealant.

[0015] Compared with existing technologies, the significant advantages of this invention are:

[0016] Firstly, this utility model forms a multi-layered protection system through composite waterproofing of coatings and roll materials, reinforcement with additional layers, and a multi-seal structure. Furthermore, detailed designs such as rounded corners, drip edges, and slope guidance meet regulatory requirements, effectively solving common leakage problems. The scientific combination of materials such as polymer mortar, alkali-resistant mesh, and TPO roll materials ensures clear construction logic and strong operability. Additionally, measures such as keel reinforcement and mechanical fixing of metal plates enhance wind uplift resistance and durability.

[0017] Secondly, this utility model's base treatment specification ensures construction quality by clearly requiring the removal of protrusions, dust, and debris from the parapet wall base layer and guaranteeing flatness. This provides a reliable foundation for subsequent waterproofing and insulation layer construction, reducing the risk of hollowing and cracking. It also combines the roof construction thickness and material installation performance to determine the elevation, avoiding material waste or structural conflicts due to thickness errors.

[0018] This solution addresses the problems of existing structures where, in areas with strong winds, the edges of the waterproof membrane are easily blown away by the wind, leading to loose fasteners or the membrane detaching from the groove, resulting in unstable components. It also solves the problem of waterproof membranes being prone to aging and cracking when exposed to ultraviolet rays and temperature differences for a long time, thus necessitating the installation of protective layers such as fine aggregate concrete. Attached Figure Description

[0019] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 This is a schematic diagram of the cross-sectional structure of the wall provided by this utility model;

[0021] Figure 2 This utility model provides Figure 1 Enlarged structural diagram at point A in the middle;

[0022] Figure 3 This utility model provides Figure 1 Enlarged structural diagram at point B.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Wall; 2. Aluminum plate embedded parts; 3. Angle steel; 4. Waterproof galvanized steel plate; 5. Fastening bolt one; 6. Fine stone concrete; 7. Mesh cloth; 8. Metal plate; 9. Anchor bolt; 10. Weather-resistant sealant; 11. Anti-slip waterproof coating one; 12. Waterproof membrane; 13. Fastening bolt two; 14. Ethylene film; 15. Slope-finding layer; 16. Insulation board; 17. Leveling layer one; 18. Anti-slip waterproof coating two; 19. Leveling layer two. Detailed Implementation

[0025] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0026] This utility model provides an improved waterproof structure for an aluminum panel coping on a roof parapet wall. The technical solution of this utility model is as follows:

[0027] like Figures 1-3 As shown, a waterproof structure for an aluminum panel coping of a roof parapet wall includes a wall 1 and an insulation board 16, which is a structural system with multiple waterproof guarantees and easy construction, and also includes;

[0028] Aluminum plate embedded part 2 is fixedly installed on the inner top of wall 1. A pair of angle steels 3 are welded to the top of aluminum plate embedded part 2. The installation of angle steels 3 improves the rigidity of aluminum plate.

[0029] The slope-finding layer 15 is fixedly installed on one side of the wall 1. The surface of the slope-finding layer 15 is fixedly installed with the leveling layer 17. The slope-finding layer 15 guides rainwater to flow along the preset path to the drain outlet by reasonably setting the slope, so as to avoid water accumulation and leakage.

[0030] Furthermore, a waterproof galvanized steel plate 4 is fixedly installed on the top of the wall 1. A fastening bolt 5 is threaded between the waterproof galvanized steel plate 4 and the angle steel 3. The galvanized steel plate serves as a waterproof layer, exhibiting excellent fatigue resistance and adaptability to temperature-induced deformation.

[0031] Furthermore, an anti-slip waterproof coating 11 is fixedly installed between the wall 1 and the leveling layer 17. An anti-slip waterproof coating 2 18 is fixedly installed on the outside of the anti-slip waterproof coating 11. An asphalt waterproof coating is placed between the anti-slip waterproof coating 11 and the anti-slip waterproof coating 2 18. After the asphalt waterproof coating is applied and cured, it forms a seamless waterproof layer, which can effectively avoid the risk of leakage.

[0032] In a further embodiment of the present invention, a waterproof membrane 12 is fixedly installed on the outer side of the anti-slip waterproof coating 18, an ethylene film 14 is fixedly installed on one side of the surface of the waterproof membrane 12, and a leveling layer 19 is fixedly installed between the ethylene film 14 and the insulation board 16. The leveling layer fills the unevenness of the base layer to form a uniform surface, providing a flat foundation for the subsequent laying of the waterproof layer.

[0033] Furthermore, fine aggregate concrete 6 is fixedly installed on the surface of the insulation board 16, and mesh cloth 7 is fixedly installed on the side of the insulation board 16. The fine aggregate concrete 6 and the mesh cloth 7 are in contact. A metal plate 8 is fixedly installed on the outside of the mesh cloth 7. An anchor bolt 9 is set between one end of the metal plate 8 and the fine aggregate concrete 6. The raw materials of the insulation board 16 are crushed glass and minerals. No harmful substances such as Freon are produced during the production process. After being discarded, it can be crushed, recycled and reused to reduce resource waste.

[0034] Furthermore, a pair of fastening bolts 13 are threaded between the other end of the wall 1 and the metal plate 8. Both ends of the wall 1, the fine stone concrete 6 and the metal plate 8 are coated with weather-resistant sealant 10. After curing, the weather-resistant sealant 10 can resist rainwater erosion for a long time and is suitable for long-term outdoor exposure.

[0035] The specific working method is as follows: First, clean the base layer: remove foreign objects from the parapet wall of the roof to ensure that the base layer is flat; then, carry out the waterproof layer construction, and make the first part of the parapet wall of the roof rounded, with the radius of the inside and outside corners meeting the specifications; compact and smooth the mortar surface, and for the waterproof additional layer at the inside and outside corners, use a special additional layer of the same material as the main self-adhesive roll material, with an additional layer width of 500mm. Then, apply two coats of anti-slip and waterproof coating evenly with a rubber scraper. Next, when laying the waterproof membrane 12, the membrane should be laid on a substrate surface pre-treated with a primer. Determine the specific laying position, first unfold the membrane, adjust the laying position, and then attach the end of the membrane to the substrate. Then, evenly peel off the release liner from one side of the membrane. The waterproof membrane 12 should be folded up to the side of the aluminum plate embedded part 2 at the top of the parapet wall, with an extension of at least 50mm. The joint should be sealed with weather-resistant sealant 10. Additionally, before bonding, the insulation board 16 should be cut appropriately according to the shape and size of the substrate. A space of at least 150mm should be left between the top of the insulation board 16 and the top surface of the parapet wall to allow for operation space during the installation of the aluminum plate coping. Polymer cement waterproof mortar should be used. Press in the fiberglass mesh 7 as a protective layer for the waterproof layer; for the installation of the metal plate 8, install a 4mm thick metal plate 8 on the side of the parapet wall and fix it with cement nails; the top of the insulation board 16 metal plate 8 has a 2% outward slope; the ends of the metal plate 8 are sealed with weather-resistant sealant 10; finally, install the aluminum plate coping of the parapet wall, clean the top surface of the concrete parapet wall, and weld and fix the keel angle steel 3 through the reserved aluminum plate embedded parts 2, install the waterproof galvanized steel plate 4, and lay TPO polymer waterproof membrane 12 on the surface of the steel plate; the junction of the steel plate and the parapet wall metal plate 8 is sealed with weather-resistant sealant 10; the installation sequence is from low to high or from the middle to both sides; the top surface of the aluminum plate coping should have a 10% inward slope, and an eagle beak should be set under the aluminum single plate coping.

[0036] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. A waterproofing construction of an aluminium sheet coping of a parapet wall of a roof, comprising a wall (1) and an insulating board (16), characterized in that: Also includes; Aluminum plate embedded part (2), the aluminum plate embedded part (2) is fixedly installed on the inner top of the wall (1), and a pair of angle steels (3) are welded to the top of the aluminum plate embedded part (2); A slope-finding layer (15) is fixedly installed on one side of the wall (1), and a leveling layer (17) is fixedly installed on the surface of the slope-finding layer (15).

2. The waterproof structure of an aluminum panel coping for a roof parapet wall according to claim 1, characterized in that: A waterproof galvanized steel plate (4) is fixedly installed on the top of the wall (1), and a fastening bolt (5) is threaded between the waterproof galvanized steel plate (4) and the angle steel (3).

3. The waterproof structure of an aluminum panel coping for a roof parapet wall according to claim 1, characterized in that: An anti-slip waterproof coating 1 (11) is fixedly installed between the wall (1) and the leveling layer 1 (17). An anti-slip waterproof coating 2 (18) is fixedly installed on the outside of the anti-slip waterproof coating 1 (11). An asphalt waterproof coating is provided between the anti-slip waterproof coating 1 (11) and the anti-slip waterproof coating 2 (18).

4. The waterproof structure of an aluminum panel coping for a roof parapet wall according to claim 3, characterized in that: A waterproof membrane (12) is fixedly installed on the outside of the anti-slip waterproof coating (18). An ethylene film (14) is fixedly installed on one side of the surface of the waterproof membrane (12). A leveling layer (19) is fixedly installed between the ethylene film (14) and the insulation board (16).

5. The waterproof structure of an aluminum panel coping for a roof parapet wall according to claim 1, characterized in that: Fine aggregate concrete (6) is fixedly installed on the surface of the insulation board (16), and mesh cloth (7) is fixedly installed on the side of the insulation board (16). The fine aggregate concrete (6) and the mesh cloth (7) are in contact. A metal plate (8) is fixedly installed on the outside of the mesh cloth (7), and an anchor bolt (9) is provided between one end of the metal plate (8) and the fine aggregate concrete (6).

6. A waterproof structure for an aluminum panel coping on a roof parapet wall according to any one of claims 1-5, characterized in that: A pair of fastening bolts (13) are threaded between the other end of the wall (1) and the metal plate (8), and both ends of the wall (1), fine stone concrete (6) and metal plate (8) are coated with weather-resistant sealant (10).