Building roof waterproof structure

By combining a double-layer sloping drainage structure with a mesh drainage channel at the bottom of the insulation layer, the problem of water seepage and accumulation on the building roof is solved, achieving drainage without dead angles and precise repair, and improving the durability and drainage efficiency of the waterproof layer.

CN122812403APending Publication Date: 2026-09-25CHINA RAILWAY CONSTR ENG GRP FOURTH CONSTR CO LTD +2
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Patent Information

Application Number
CN202611274429.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-08-21
Publication Date
2026-09-25

AI Technical Summary

Technical Problem

Existing building roof waterproofing structures are prone to water accumulation after seepage, leading to aging and cracking of the waterproofing layer. Traditional repair methods are highly destructive or cannot completely repair the leaks, resulting in a high recurrence rate.

Method used

The system combines a double-layer sloping flow guiding structure with a mesh drainage channel at the bottom of the insulation layer to form a comprehensive drainage system without dead corners. Combined with pre-embedded repair modules, it can achieve precise leak sealing, and the drainage function will not be affected after repair.

Benefits of technology

It achieves full-area drainage without dead corners on the roof, prevents water from stagnating for a long time, and the repair process does not require damage to the original structure. It can accurately locate the leakage point, reduce the probability of leakage recurrence, and improve the durability of the waterproof layer and drainage efficiency.

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Abstract

The application discloses a kind of building roof waterproof structures, is related to waterproof roof technical field.A kind of building roof waterproof structure, including from below to above sequentially arranged structural base layer, waterproof protective layer, waterproof layer, insulation layer and concrete protective layer, the top of structural base layer is provided with parapet, the both ends of structural base layer are provided with drainage ditch, structural base layer is fixedly installed with the drainage assembly connected with drainage ditch;Waterproof protective layer is longitudinally provided with triangular slope, the both ends of waterproof protective layer close to two groups of drainage ditch are lower than the middle section of waterproof protective layer, and the transverse of waterproof protective layer is provided with concave-convex undulating slope;The linkage cooperation of long-acting dry of drainage structure, accurate partition of flow guide structure, non-invasive bottom-up of repair structure, let roof have multiple advantages of long-acting drainage anti-seepage, not easy to seep, can be repeatedly minimally invasive repair, fundamentally solve the industry defects of traditional roof easy to accumulate water, easy to age, seepage repeatedly, maintenance difficulty.
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