A bathroom waterproofing system

CN224620845UActive Publication Date: 2026-08-11GAUNGLIN SUZHOU CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-29
Publication Date
2026-08-11

AI Technical Summary

Technical Problem

传统应用中多采用一字型结构,但该结构仅能对地面水平方向的渗水起到阻挡作用,无法覆盖卫生间门两侧的墙面垂直区域,这直接导致水分易沿门侧墙面基层向上渗透,进而引发墙面腻子发霉、乳胶漆脱落,以及门外地板受潮发黑、起翘等常见问题,防水效果存在明显短板

Benefits of technology

(1)本实用新型中的止水坎采用呈U型结构的止水板,其上端伸进门槛石的底部,最大化的提高了防水的性能,可做到阻断隔绝渗水的情况,同时止水板的左右两端延伸至门洞两侧的墙体内,既能实现地面水平方向的防水,又能对墙面垂直区域的渗水起到阻挡作用,并且该结构安装施工快捷,能够显著提高施工效率;

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to the field of building decoration and discloses a bathroom waterproofing system, including a threshold stone located above a building floor slab. A cast-in-place layer and a waterproofing plate are disposed between the threshold stone and the floor slab. A first mounting groove is formed in the floor slab, and second mounting grooves are formed on both sides of the first mounting groove, located on the walls on both sides of the doorway. The lower end of the waterproofing plate is embedded in the first mounting groove, and the left and right ends of the waterproofing plate are respectively embedded in the corresponding second mounting grooves. The upper end of the waterproofing plate penetrates the cast-in-place layer and is embedded in the bottom of the threshold stone. The upper end of the waterproofing plate extends into the bottom of the threshold stone, maximizing waterproofing performance and effectively blocking water seepage. Simultaneously, the left and right ends of the waterproofing plate extend into the walls on both sides of the doorway, achieving both horizontal waterproofing of the floor and blocking water seepage in the vertical areas of the walls.
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Description

Technical Field

[0001] This utility model relates to the field of building decoration, specifically to a bathroom waterproofing system. Background Technology

[0002] When installing a water-stop threshold in the bathroom, traditional construction methods mainly fall into two categories: concrete pouring and straight steel water-stop plates. However, both have significant limitations in practical applications. (1) Concrete pouring waterstop: This method requires on-site concrete pouring operations, which is not only complicated and time-consuming, but also extremely difficult to protect the finished product during the curing stage. Before the concrete is fully cured, it is easy to be damaged by people stepping on it or tools colliding with it, and subsequent repairs require additional costs. In addition, its overall construction cost is relatively high, covering labor, materials and management costs during the curing period. If the pouring density is insufficient, it may also leave hidden leakage risks. (2) Straight-line water-stop steel plate: Water-stop steel plate is a commonly used material for waterproofing construction in damp areas such as bathrooms and shower rooms. Its core function is to prevent water from seeping into other spaces through gaps in the walls or floors by physically blocking it. In traditional applications, a straight-line structure is often used, but this structure can only block water seepage in the horizontal direction on the ground and cannot cover the vertical area of ​​the walls on both sides of the bathroom door. This directly leads to water easily seeping upwards along the base layer of the wall on the side of the door, which in turn causes common problems such as mold on the wall putty, peeling of latex paint, and dampness, blackening, and warping of the floor outside the door. The waterproofing effect has obvious shortcomings.

[0003] Therefore, there is an urgent need to propose a bathroom waterproofing system to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a bathroom water-stopping system. The U-shaped water-stopping plate is embedded in the ground and its two ends extend into the walls on both sides of the door opening to block water seepage in the horizontal direction of the ground and the vertical area of ​​the wall. Moreover, the structure is easy to construct and the maintenance process is simple.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A bathroom waterproofing system includes a threshold stone located above a building floor slab. A cast-in-place layer and a U-shaped waterproofing plate are disposed between the threshold stone and the floor slab. A first mounting groove is provided on the building floor slab, and second mounting grooves are provided on both sides of the first mounting groove, with the second mounting grooves located on the walls on both sides of the door opening. The lower end of the waterproofing plate is embedded in the first mounting groove, and the left and right ends of the waterproofing plate are respectively embedded in the corresponding second mounting grooves. The upper end of the waterproofing plate passes through the cast-in-place layer and is embedded in the bottom of the threshold stone.

[0006] Optionally, the threshold stone is provided with floor tiles on the side near the bathroom, and a second waterproof layer is provided between the floor tiles and the poured layer, and a first waterproof layer is provided between the poured layer and the building floor slab.

[0007] Optionally, both the first and second waterproof layers extend to the outside of the bathroom.

[0008] Optionally, the bottom of the threshold stone is provided with a groove, the upper end of the waterstop plate is embedded in the groove, and structural sealant is provided in the groove.

[0009] Optionally, the threshold stone has a notch on the side near the bathroom, the notch overlaps the floor tile, and the top surface of the threshold stone is higher than the floor tile.

[0010] Optionally, a floor is provided on the side of the threshold stone opposite to the bathroom, and the floor is flush with the top surface of the threshold stone.

[0011] Optionally, a leveling layer is provided between the floor tile and the poured layer, the second waterproof layer is located between the leveling layer and the poured layer, and the floor tile is fixedly installed on the top surface of the leveling layer.

[0012] Optionally, the waterstop includes a vertical portion and parallel portions located at the upper and lower ends of the vertical portion, the parallel portions facing the bathroom and embedded in the threshold stone and the building floor slab.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: (1) The waterstop in this utility model adopts a U-shaped waterstop plate with its upper end extending into the bottom of the threshold stone, which maximizes the waterproof performance and can block and isolate water seepage. At the same time, the left and right ends of the waterstop plate extend into the walls on both sides of the door opening, which can not only achieve waterproofing in the horizontal direction of the ground, but also block water seepage in the vertical area of ​​the wall. Moreover, the structure is quick to install and can significantly improve construction efficiency. (2) In this utility model, the process of embedding structural sealant in the groove at the bottom of the threshold stone can block the leakage of water vapor and prevent problems such as increased wall moisture content and large water vapor on the ground outside the threshold stone caused by water vapor. (3) In this utility model, the threshold stone is installed above the waterstop plate through a groove, and the upper end of the waterstop plate is embedded in the groove. This installation method improves the overall stability of the threshold stone, so that the waterstop plate and the threshold stone can be better connected into a whole. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of the bathroom waterproofing system in an embodiment of this utility model; Figure 2 This is a schematic diagram of the threshold stone in an embodiment of this utility model; Figure 3 This is a schematic diagram of the structure of the waterstop plate in an embodiment of this utility model; Among them, 1. Building floor slab; 2. Threshold stone; 201. Groove; 202. Notch; 3. Waterstop board; 301. Vertical part; 302. Parallel part; 4. First waterproof layer; 5. Protective layer; 6. Insulation board; 7. Ceramsite backfill layer; 8. Cast-in-place layer; 9. Second waterproof layer; 10. Floor tile; 11. Flooring. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0016] Generally, bathrooms are connected to external spaces (such as master bedrooms or corridors) through doorways. Within a building, bathrooms are considered damp areas. Water-stop thresholds are set at the boundary between damp and dry areas, usually below the threshold stone 2. Their function is to cut off the path of water penetration through physical barriers and waterproofing reinforcement, preventing water from the damp area from damaging adjacent structures or spaces.

[0017] Example 1, as Figures 1-3 As shown, a bathroom waterproofing system includes a threshold stone 2, a waterproofing plate 3, a first mounting groove and a second mounting groove. The threshold stone 2 is set above the building floor slab 1, the waterproofing plate 3 is located between the threshold stone 2 and the building floor slab 1, and the first mounting groove is opened on the building floor slab 1. The second mounting groove is located on both sides of the first mounting groove and is opened on the wall surface on both sides of the door opening.

[0018] The building floor slab 1 is provided with a cast-in-place layer 8, the threshold stone 2 is located above the cast-in-place layer 8, the lower end of the waterstop 3 is embedded in the first installation groove, the left and right ends of the waterstop 3 are respectively embedded in the corresponding second installation grooves, and the upper end of the waterstop 3 passes through the cast-in-place layer 8 and is embedded in the bottom of the threshold stone 2.

[0019] Specifically, the waterstop 3 is made of stainless steel and has a U-shaped structure. The waterstop 3 includes a vertical portion 301 and parallel portions 302 located at the top and bottom of the vertical portion 301. During installation, the parallel portions 302 face the bathroom, and their top and bottom ends are embedded in the threshold stone 2 and the building floor slab 1, while their left and right ends are embedded in the walls on both sides of the doorway. This system allows for quick installation; the integrated installation significantly improves construction efficiency. The U-shaped waterstop extending into the threshold stone 2 maximizes waterproofing performance, effectively blocking and isolating water seepage.

[0020] As described above, a floor tile 10 is installed on the side of the threshold stone 2 closest to the bathroom, and a second waterproof layer 9 is installed between the floor tile 10 and the poured layer 8, while a first waterproof layer 4 is installed between the poured layer 8 and the building floor slab 1. A floor 11 is installed on the side of the threshold stone 2 opposite to the bathroom, and the top surface of the floor 11 is flush with the top surface of the threshold stone 2.

[0021] Specifically, the threshold stone 2 has a notch 202 on the side closest to the toilet, which overlaps with the floor tile 10, and the top surface of the threshold stone 2 is higher than the floor tile 10. That is, the floor tile 10 is laid on the floor of the toilet, and the floor 11 is laid on the floor outside the toilet, and the top surface of the floor tile 10 is lower than the top surface of the floor 11, which can prevent water from overflowing in the toilet.

[0022] Furthermore, a groove 201 is provided at the bottom of the threshold stone 2, and the upper end of the waterstop plate 3 is embedded in the groove 201, with structural sealant provided inside the groove 201. The U-shaped waterstop extending into the groove 201 of the stone maximizes the waterproof performance, effectively blocking and isolating water seepage. At the same time, the process of filling the groove 201 with structural sealant can prevent moisture leakage, thus avoiding problems such as increased wall moisture content and excessive moisture on the ground outside the threshold stone 2.

[0023] The threshold stone 2 is installed above the waterstop plate 3 through the groove 201. The upper end of the waterstop plate 3 is embedded in the groove 201. This installation method improves the overall stability of the threshold stone 2, so that the waterstop plate 3 and the threshold stone 2 can be better connected into a whole.

[0024] In addition, both the first waterproof layer 4 and the second waterproof layer 9 extend to the outside of the bathroom, meaning that both waterproof layers extend from the damp area to the dry area, thereby preventing moisture from penetrating the walls and the floor and improving the waterproofing effect.

[0025] Example 2: Based on Example 1, this utility model also proposes a specific structure for the bottom of the toilet.

[0026] like Figure 1 As shown, the bathroom floor slab 1 has a recess, in which, from bottom to top, are arranged the following layers: a first waterproof layer 4, a protective layer 5, an insulation board 6, a ceramsite backfill layer 7, a poured layer 8, a second waterproof layer 9, a leveling layer, and floor tiles 10. The protective layer 5 and the leveling layer are filled with cement mortar, the poured layer 8 is filled with fine aggregate concrete, and the floor tiles 10 are fixed to the top of the leveling layer using a wet-laying process with a special adhesive.

[0027] The first waterproof layer 4 and the second waterproof layer 9 are both existing technologies. During construction, they need to extend to the outside of the bathroom to ensure the waterproof effect and prevent moisture from seeping from the damp area to the dry area.

[0028] Example 3: Based on the above examples, this utility model also proposes a specific construction process for a bathroom waterproofing system, including the following steps: (1) Ensure that the waterstop 3 meets the design requirements. Check the specifications, thickness, and material of the steel plate. Process the U-shaped waterstop 3 (waterstop sill) in the back-end according to the requirements of the site dimensions. At the same time, the groove depth of the ground and the walls on both sides of the door opening should be not less than 10mm. Use special anchoring adhesive to fill the groove completely. That is, after the anchoring adhesive fills the first and second installation grooves, the waterstop 3 is embedded into them accordingly.

[0029] (2) Based on the installation location of the waterstop 3 on site, the threshold stone 2 (its thickness should be no less than 18mm) should be slotted at a fixed distance, and relevant protective measures should be taken. If the threshold stone 2 has back reinforcement requirements, its corresponding location area should be avoided in advance.

[0030] (3) After the water-stop is installed, it is treated with fine stone concrete. The corresponding area of ​​the threshold stone 2 is laid by wet laying process. After the concrete is poured, leave an 8-10mm space for the bonding layer. At the same time, the waterproofing construction needs to be turned up to 500mm wide outside the threshold stone 2 area and extended to 300mm wide on both sides.

[0031] (4) Fill the groove 201 of the threshold stone 2 with structural sealant, and apply special stone adhesive to other areas for installation and paving. After completion, perform appropriate finished product protection and water storage test.

[0032] In summary, this utility model proposes a bathroom waterproofing system, which has the advantages of quick installation and integrated installation, significantly improving construction efficiency. The U-shaped waterproofing sill extending into the stone groove 201 maximizes the waterproofing performance, effectively blocking water seepage. Simultaneously, the process of embedding structural sealant within the groove 201 prevents moisture leakage, eliminating problems such as increased wall moisture content and excessive moisture on the ground outside the threshold stone 2. Furthermore, the installation method of the groove 201 and threshold stone 2 enhances the overall stability of the threshold stone 2, allowing the waterproofing sill and threshold stone 2 to be better connected as a whole.

[0033] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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.

[0035] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0036] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A bathroom waterproofing system, characterized in that: The system includes a threshold stone located above a building floor slab, with a cast-in-place layer and a U-shaped waterstop plate between them. A first mounting groove is provided on the building floor slab, and second mounting grooves are provided on both sides of the first mounting groove, with the second mounting grooves located on the walls on both sides of the doorway. The lower end of the waterstop plate is embedded in the first mounting groove, and the left and right ends of the waterstop plate are respectively embedded in the corresponding second mounting grooves. The upper end of the waterstop plate passes through the cast-in-place layer and is embedded in the bottom of the threshold stone.

2. The bathroom waterproofing system according to claim 1, characterized in that: The threshold stone is fitted with floor tiles on the side closest to the bathroom, and a second waterproof layer is provided between the floor tiles and the poured layer, while a first waterproof layer is provided between the poured layer and the building floor slab.

3. The bathroom waterproofing system according to claim 2, characterized in that: Both the first and second waterproof layers extend to the outside of the bathroom.

4. The bathroom waterproofing system according to claim 3, characterized in that: The bottom of the threshold stone is provided with a groove, the upper end of the waterstop plate is embedded in the groove, and structural sealant is provided in the groove.

5. The bathroom waterproofing system according to claim 4, characterized in that: The threshold stone has a notch on the side closest to the bathroom, the notch overlaps the floor tile, and the top surface of the threshold stone is higher than the floor tile.

6. The bathroom waterproofing system according to claim 5, characterized in that: The threshold stone is located on the side of the bathroom opposite to the bathroom door, and the floor is flush with the top surface of the threshold stone.

7. The bathroom waterproofing system according to claim 6, characterized in that: A leveling layer is provided between the floor tiles and the pouring layer, the second waterproof layer is located between the leveling layer and the pouring layer, and the floor tiles are fixedly installed on the top surface of the leveling layer.

8. The bathroom waterproofing system according to any one of claims 1-7, characterized in that: The waterstop plate includes a vertical portion and parallel portions located at the upper and lower ends of the vertical portion. The parallel portions face the bathroom and are embedded in the threshold stone and the building floor slab.