Roof settlement joint waterproof structure
Through multi-layered waterproof structural design and material combination, the waterproofing problem at the roof settlement joint is solved, achieving permanent waterproofing effect and good drainage performance, and is suitable for waterproofing treatment of roof settlement joints of buildings.
Patent Information
- Application Number
- CN202423066981.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-12
AI Technical Summary
Uneven settlement caused by differences in height, load and structure between adjacent parts of the building can easily damage the waterproofing material at the roof settlement joints, leading to leaks.
The multi-layer waterproof structure design includes a cross-laminated self-adhesive membrane, a self-adhesive waterproof membrane layer, a metal cover plate, and a water-soluble penetrating and consolidating polymer composite coating layer. Combining the principles of "multi-layer protection and a combination of rigidity and flexibility" with a layer-by-layer reinforcement construction process, the waterproof effect is ensured.
It effectively prevents water seepage and leakage at roof settlement joints, ensures the waterproof layer has a permanent waterproof effect, and has good drainage performance and material protection.
Smart Images

Figure CN223593583U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building waterproofing structure technology, and in particular to a waterproofing structure for roof settlement joints. Background Technology
[0002] When adjacent parts of a building differ significantly in height, load, and structural form, and the foundation is weak, uneven settlement may occur, causing cracks in certain weak points. This is especially true for adjacent roof sections, which typically require waterproofing. Because two adjacent roofs settle differently, improper structural design at the settlement points can easily lead to the waterproofing material being damaged, resulting in leaks. To prevent damage to the building's roof due to uneven foundation settlement, vertical joints are necessary. Expansion joints are the most crucial waterproofing element in a waterproofing project. The waterproofing design should adhere to the principle of "multi-layered protection with a balance of rigidity and flexibility," employing organic waterproofing theory and layer-by-layer reinforcement construction techniques to ensure foolproof waterproofing of expansion joints. Utility Model Content
[0003] The purpose of this utility model is to provide a waterproof structure for roof settlement joints in response to the above-mentioned situation. This waterproof structure has a very good waterproof effect on roof settlement joints and has obvious promotional value.
[0004] The specific solution of this utility model is: a waterproof structure for roof settlement joints, comprising adjacent roofs a and b, with parapet walls a and b constructed at the top of the edges of each roof a and roof b. Extruded polystyrene (XPS) boards are filled near the top of the gap between parapet walls a and b. A cross-laminated self-adhesive membrane is laid on top of the XPS boards, extending from the center to both sides. The cross-laminated self-adhesive membrane extends to the side walls of parapet walls a and b. Metal cover plates are also installed; L-shaped waterproof additional layers are laid at the base of the walls where parapet wall a connects to roof a and parapet wall b connects to roof b, and a self-adhesive waterproof membrane layer is laid on top of the waterproof additional layer. One end of the self-adhesive waterproof membrane layer extends and inserts under the cross-laminated self-adhesive membrane, and the other end of the self-adhesive waterproof membrane layer is laid horizontally to the top plane of roof a or roof b. A roof protective layer is laid above the horizontal section of the self-adhesive waterproof membrane layer, and a waterproof coating layer is laid on top of the roof protective layer.
[0005] Furthermore, the metal cover plate described in this utility model extends from the middle to both sides, and the two ends of the metal cover plate are provided with wrapping and bending structures. The wrapping and bending structures bend and wrap the cross-laminated self-adhesive roll material and the self-adhesive waterproof roll layer at the top corner of parapet wall a and parapet wall b to fix them.
[0006] Furthermore, the middle part of the metal cover plate described in this utility model is configured as a pointed tip that slopes to both sides.
[0007] Furthermore, the top center of the cross-laminated self-adhesive roll described in this utility model is laid in a loose-lay manner.
[0008] Furthermore, the waterproof coating layer described in this utility model is made of a water-soluble penetrating and solidifying polymer composite coating layer.
[0009] Furthermore, the waterproof coating layer described in this utility model is sloped outwards from the base of parapet wall a or parapet wall b to both sides.
[0010] This utility model has the following beneficial effects:
[0011] 1. The waterproof structure in this utility model is designed based on the principle of "multi-layer protection and a combination of rigidity and flexibility". It adopts organic waterproofing theory and layer-by-layer reinforcement construction process to ensure that the expansion joint is waterproof.
[0012] 2. The roof settlement expansion joint in this utility model has a novel and reasonable structural design with multiple layers of waterproofing, which can effectively cope with the waterproofing requirements caused by roof structure deformation. Even if the settlement joint between the roof structures deforms, there will be no water seepage or leakage.
[0013] 3. The entire waterproof layer structure has an outward drainage slope, resulting in good drainage performance.
[0014] 4. The cross-laminated self-adhesive membrane is also equipped with a metal cover plate to protect the waterproof material and ensure that the waterproof layer does not undergo photothermal aging, so as to ensure that the waterproof layer has a permanent waterproof effect.
[0015] 5. The water-soluble penetrating and consolidating polymer composite waterproof coating of this utility model is a special high-performance waterproof material with good reinforcement and waterproof performance. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0017] In the diagram: 1—Roof a, 2—Roof settlement joint, 3—Parapet wall a, 4—Metal cover plate, 5—Extruded polystyrene board, 6—Cross-laminated self-adhesive membrane, 7—Self-adhesive waterproof membrane layer, 8—Parapet wall b, 9—Additional waterproof layer, 10—Roof protective layer, 11—Waterproof coating layer, 12—Roof b. Detailed Implementation
[0018] The technical solution 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, and 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. In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," etc., indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0019] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0020] See Figure 1This utility model relates to a waterproof structure for roof settlement joints, comprising adjacent roofs a1 and b12. Parapet walls a3 and b8 are constructed at the top edges of roofs a and b, respectively. Extruded polystyrene (XPS) board 5 is filled in the gap between parapet walls a and b, i.e., the roof settlement joint 2 near the top. A cross-laminated self-adhesive membrane 6 is laid on top of the XPS board, extending from the center outwards. The cross-laminated self-adhesive membrane extends to the side walls of parapet walls a and b. The surface is also equipped with a metal cover plate 4; at the base of the walls where parapet wall a connects to roof a and parapet wall b connects to roof b, an L-shaped waterproof additional layer 9 is laid, and a self-adhesive waterproof membrane layer 7 is laid on top of the additional waterproof layer. One end of the self-adhesive waterproof membrane layer extends into the underside of the cross-laminated self-adhesive membrane, and the other end of the self-adhesive waterproof membrane layer is laid horizontally to the top plane of roof a or roof b. A roof protective layer 10 is laid above the horizontal section of the self-adhesive waterproof membrane layer, and a waterproof coating layer 11 is laid above the roof protective layer. Furthermore, the metal cover plate in this invention extends from the middle to both sides, and both ends of the metal cover plate are provided with wrapping and bending structures. The wrapping and bending structures bend and wrap around the cross-laminated self-adhesive membrane and the self-adhesive waterproof membrane layer at the top corners of parapet wall a and parapet wall b, fixing them in place. Furthermore, the middle part of the metal cover plate in this invention is set into a pointed shape that slopes to both sides. Furthermore, the top center of the cross-laminated self-adhesive membrane roll described in this invention is laid loosely. Furthermore, the waterproof coating layer described in this invention is made of a water-soluble, penetrating, and consolidating polymer composite coating layer. Furthermore, the waterproof coating layer described in this invention is sloped outwards from the base of parapet wall a or parapet wall b, a design that facilitates drainage from the top.
[0021] Expansion joints are the most important waterproofing nodes in waterproofing projects. This utility model relates to the waterproofing treatment of roof settlement joint nodes. Its waterproofing structure adheres to the principle of "multi-layer protection and a combination of rigidity and flexibility", adopts organic waterproofing theory and layer-by-layer reinforcement construction process to ensure that the expansion joint is waterproof.
[0022] The additional waterproofing layer at the base of the parapet wall should be fully bonded to the structure. The waterproofing material for this additional layer should be a waterproof membrane with a high elongation ratio that can fully bond to the structure. When plastering the top of the parapet wall, a 2% outward slope should be created to ensure proper drainage. The waterproofing layer at the top of the parapet wall can be laid loosely to ensure better resistance to deformation. The overlaps of the membrane should be constructed according to specifications.
[0023] The roll material should have a protective layer installed according to the material's own requirements. When using non-exposed waterproofing materials, waterproofing protection should be carried out according to the design requirements to ensure that the waterproofing layer does not undergo photo-thermal aging, thus ensuring that the waterproofing layer has a permanent waterproofing effect.
[0024] Water-soluble penetrating and consolidating polymer composite waterproof coating is a specialized high-performance waterproof material with excellent reinforcement and waterproofing properties. Because this product is a two-component reactive waterproof coating, it must be applied strictly according to the product instructions.
[0025] The waterproof structure of this utility model adheres to the principle of "multi-layered protection and a combination of rigidity and flexibility," employing organic waterproofing theory and a layer-by-layer reinforcement construction process to ensure foolproof waterproofing of expansion joints. The roof settlement expansion joint design in this utility model is novel and reasonable, featuring multi-layered waterproofing that effectively addresses the waterproofing requirements caused by roof structural deformation. Even if deformation occurs at the settlement joints between roof structures, there will be no water seepage or leakage. The entire waterproof layer structure has an outward drainage slope, providing excellent drainage performance. A metal cover plate is also installed on the cross-laminated self-adhesive membrane to protect the waterproofing material and ensure that the waterproof layer does not undergo photo-thermal aging, thus guaranteeing a permanent waterproofing effect. The water-soluble penetrating and consolidating polymer composite waterproof coating in this utility model is a specialized high-performance waterproofing material with excellent reinforcement and waterproofing properties.
Claims
1. A waterproof structure for roof settlement joints, comprising adjacent roofs a and b, wherein parapet walls a and b are constructed on the top of the edges of each of roofs a and b, characterized in that: Extruded polystyrene (XPS) board is filled near the top of the gap between parapet wall a and parapet wall b. A cross-laminated self-adhesive membrane is laid on top of the XPS board, extending from the center outwards to both sides. The cross-laminated self-adhesive membrane extends to the side walls of parapet wall a and parapet wall b. A metal cover plate is also installed on top of the cross-laminated self-adhesive membrane. An L-shaped waterproofing layer is laid at the base of the walls where parapet wall a connects to roof a and parapet wall b connects to roof b. A self-adhesive waterproof membrane layer is laid on top of the waterproofing layer, with one end extending under the cross-laminated self-adhesive membrane. The other end of the self-adhesive waterproof membrane layer is laid horizontally to the top plane of roof a or roof b. A roof protective layer is laid above the horizontal section of the self-adhesive waterproof membrane layer, and a waterproof coating layer is laid above the roof protective layer.
2. The waterproof structure for roof settlement joints according to claim 1, characterized in that: The metal cover plate extends from the middle to both sides, and the two ends of the metal cover plate are provided with wrapping and bending structures. The wrapping and bending structures bend and wrap the cross-laminated self-adhesive membrane and the self-adhesive waterproof membrane at the top corner of parapet wall a and parapet wall b to fix them.
3. The waterproof structure for roof settlement joints according to claim 2, characterized in that: The middle part of the metal cover is designed as a pointed tip that slopes to both sides.
4. The waterproof structure for roof settlement joints according to claim 1, characterized in that: The top center of the cross-laminated self-adhesive roll is laid loosely.
5. A waterproof structure for roof settlement joints according to claim 1, characterized in that: The waterproof coating layer is made of a water-soluble, penetrating, and solidifying polymer composite coating layer.
6. A waterproof structure for roof settlement joints according to claim 1, characterized in that: The waterproof coating layer is applied in a sloping manner from the base of parapet wall a or parapet wall b to both sides.