Building design roof cornice waterproof structure

Abstract

The utility model relates to building waterproof technology field, concretely is a kind of building design roof cornice waterproof structure. Including: concrete roof and parapet wall;Water guide groove is set in the connecting place of concrete roof and parapet wall;The bottom of water guide groove is provided with flow guide fin, and flow guide fin and the length direction of water guide groove present certain angle. The upper end of concrete roof is sequentially provided with first mortar screed layer, vapour barrier, thermal insulation layer, concrete screed layer, second mortar screed layer, coiled material waterproof layer, isolation layer and concrete protective layer. The connecting place of concrete roof and parapet wall is provided with steel sheet, and water guide groove is installed on steel sheet. Vapour barrier and the outside wall of water guide groove are bonded. Coiled material waterproof layer and the inside wall of water guide groove are bonded. The angle of flow guide fin and the length direction of water guide groove is 30. It is through water guide groove to accelerate drainage, elastic waterproof coiled material adaptive deformation and moisture discharge of air-permeable membrane, and the problem of traditional cornice leakage, condensation is comprehensively solved.

Description

Technical Field

[0001] This utility model relates to the field of building waterproofing technology, specifically a waterproofing structure for the eaves of a building roof. Background Technology

[0002] As a critical junction between the roof and walls, the roof eaves' waterproofing performance directly affects the overall durability of the building and the quality of the indoor environment. Traditional eaves waterproofing structures have long suffered from significant deficiencies in handling reliability issues under long-term service conditions. Poor drainage and leakage risk: Conventional methods rely on a single layer of flexible waterproof membrane for covering. However, when rainwater is concentrated or the instantaneous water volume is large, this structure lacks an efficient drainage mechanism, which easily leads to rainwater retention at the membrane overlap joints, one of the main causes of eaves leakage.

[0003] Insufficient material durability and structural cracks: Some eaves waterproofing uses rigid protective measures, such as metal flashing. Although this type of material has a certain strength, its inherently high coefficient of linear expansion makes it extremely sensitive to temperature changes. Metal flashing will undergo repeated deformation due to significant thermal expansion and contraction, which can easily lead to structural fatigue cracking.

[0004] Internal humid and hot environment and the risk of mold growth on wooden components: The eaves are a relatively enclosed space, and the combined effect of cold air from the outside and warm, humid air rising from inside the roof and attic makes them prone to condensation. Existing traditional waterproofing structures often focus on preventing rainwater intrusion, but do not adequately consider the diffusion of moisture and the drainage of internal condensation. The accumulated condensation and moisture, unable to drain effectively over time, will cause the wooden components inside the eaves to remain in a high-humidity environment, significantly increasing the risk of mold and decay, and weakening the structural strength. Utility Model Content

[0005] In order to solve the technical problems existing in the background art, this utility model provides a waterproof structure for roof eaves of building design, which accelerates drainage through water guide channels, adapts to deformation of elastic waterproof membrane and releases moisture through breathable membrane, thus comprehensively solving the problems of leakage and condensation of traditional eaves.

[0006] The technical solution adopted by this utility model to solve its technical problem is: A waterproof structure for roof eaves in architectural design includes: Concrete roof and parapet wall; A water channel is installed at the junction of the concrete roof and the parapet wall; The bottom of the water guide channel is equipped with guide fins, which form a certain angle with the length direction of the water guide channel.

[0007] Furthermore, the upper part of the concrete roof is sequentially provided with a first mortar leveling layer, a vapor barrier layer, a thermal insulation layer, a concrete leveling layer, a second mortar leveling layer, a waterproof membrane layer, an isolation layer, and a concrete protective layer.

[0008] Furthermore, a steel plate is installed at the junction of the concrete roof and the parapet wall, and a water channel is installed on the steel plate.

[0009] Furthermore, the vapor barrier is bonded to the outer wall of the water guide channel.

[0010] Furthermore, the roll waterproofing layer is bonded to the inner wall of the water channel.

[0011] Furthermore, guide fins are installed on both sides of the water guide channel.

[0012] Furthermore, the angle between the guide fins and the water guide channel along its length is 30°.

[0013] The beneficial effects of this utility model are: (1) It accelerates drainage through the water channel, adapts to deformation through the elastic waterproof membrane, and discharges moisture through the PTFE breathable membrane, thus comprehensively solving the problems of leakage and condensation at the eaves.

[0014] (2) The guide fin design improves drainage efficiency by 40%, and all components can be installed in a modular manner, suitable for wooden, concrete and metal eaves. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a magnified view of a section of the water guide channel; Figure 3 This is a top view of the water guide channel.

[0017] In the picture: 1. Concrete roof, 2. First mortar leveling layer, 3. Vapor barrier, 4. Thermal insulation layer, 5. Concrete leveling layer, 6. Second mortar leveling layer, 7. Waterproof membrane, 8. Isolation layer, 9. Concrete protective layer, 10. Drainage channel, 11. Steel plate, 12. Parapet wall; 101. Airflow guide fins. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings.

[0019] A roof eaves waterproofing structure for building design comprehensively solves the problems of leakage and condensation in traditional eaves by accelerating drainage through a water-guiding channel, adapting to deformation with an elastic waterproof membrane, and allowing moisture to escape through a PTFE breathable membrane. The specific structure includes a concrete roof 1 and a parapet wall 12. A water-guiding channel 10 is located at the junction of the concrete roof 1 and the parapet wall 12. The bottom of the water-guiding channel 10 is provided with guide fins 101, which form a certain angle with the length direction of the water-guiding channel 10. In a specific embodiment, the water-guiding channel 10 is concave, 300mm wide, 50mm high, and 1.5mm thick. The guide fins 101 are 80mm long and are located on both sides of the internal flow channel of the water-guiding channel 10, with an angle of 30° between the guide fins 101 and the length direction of the water-guiding channel 10. The design of the guide fins 101 improves drainage efficiency by 40%, and all components can be modularly installed, suitable for wooden, concrete, and metal eaves.

[0020] A horizontal steel plate 11 is installed at the connection between the concrete roof 1 and the parapet wall 12, and a water channel 10 is installed on the steel plate 11.

[0021] Furthermore, the upper end of the concrete roof 1 is sequentially provided with a first mortar leveling layer 2, a vapor barrier layer 3, a thermal insulation layer 4, a concrete leveling layer 5, a second mortar leveling layer 6, a rolled waterproofing layer 7, an isolation layer 8, and a concrete protective layer 9. The vapor barrier layer 3 is bonded to the outer wall of the water guide channel 10. The rolled waterproofing layer 7 is bonded to the inner wall of the water guide channel 10.

[0022] The first mortar leveling layer 2 is a 20mm thick DSM15 mortar leveling layer. The vapor barrier 3 is a PTFE breathable membrane, which is both waterproof and breathable, allowing moisture from below to escape while preventing water from above from passing through. The concrete leveling layer 5 is a 30mm thick LC5.0 lightweight aggregate concrete leveling layer at its thinnest point. The second mortar leveling layer 6 is a 20mm thick DSM15 mortar leveling layer. The waterproof membrane layer 7 is an elastic waterproof membrane. The concrete protective layer 9 is a 40mm thick C20 fine aggregate concrete protective layer.

[0023] Specific construction methods: Step 1: Base treatment Clean the base layer of the eaves, repair cracks, and ensure that the flatness error is ≤3mm / m; Apply an acrylic interface agent to enhance the adhesion strength of the PTFE membrane.

[0024] Step 2: Installation of the water diversion system Fixed water guide channel 10 according to the design slope, sealant is applied at the joint of adjacent channels, generally silicone weather-resistant sealant, and the joint width is ≤2mm. Steel plates 11 are pre-embedded in the roof at 2000mm intervals, so that the water guide channel 10 is welded and fixed to the steel plate 11.

[0025] Step 3: Waterproofing layer construction Lay an elastic roll waterproof layer 7 and press it onto the water guide channel 10 with self-adhesive strips, with an overlap width ≥ 40mm; The inside of the eaves is fully covered with a PTFE breathable membrane, bonded with butyl tape, with seam overlap ≥50mm.

[0026] Step 4: Acceptance Inspection Water spray test: at 2L / min·m 2 The spray flow was continuous for 1 hour without leakage.

[0027] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, 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 waterproof structure for the eaves of a building, characterized in that, include: Concrete roof (1) and parapet wall (12); A water channel (10) is provided at the junction of the concrete roof (1) and the parapet wall (12); The bottom of the water guide channel (10) is provided with a flow guide fin (101), and the flow guide fin (101) forms a certain angle with the length direction of the water guide channel (10).

2. The waterproof structure for roof eaves in architectural design according to claim 1, characterized in that, The upper end of the concrete roof (1) is provided with a first mortar leveling layer (2), a vapor barrier layer (3), a thermal insulation layer (4), a concrete leveling layer (5), a second mortar leveling layer (6), a roll waterproofing layer (7), an isolation layer (8), and a concrete protective layer (9).

3. The waterproof structure for roof eaves in architectural design according to claim 1, characterized in that, A steel plate (11) is provided at the connection between the concrete roof (1) and the parapet wall (12), and the water guide channel (10) is installed on the steel plate (11).

4. A waterproof structure for roof eaves in architectural design according to claim 2, characterized in that, The vapor barrier (3) is bonded to the outer wall of the water guide channel (10).

5. A waterproof structure for roof eaves in architectural design according to claim 2, characterized in that, The waterproof membrane (7) is bonded to the inner wall of the water guide channel (10).

6. A waterproof structure for roof eaves in architectural design according to claim 1, characterized in that, The guide fins (101) are disposed on both sides of the water guide channel (10).

7. A waterproof structure for roof eaves in architectural design according to claim 1, characterized in that, The angle between the guide fins (101) and the water channel (10) along their length is 30°.

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