A method and tool for roofing downspout flashing

By using slope-finding tools adapted to different slope ratios and PVC pipe inserts, the problems of long roof construction cycles and inconsistent concrete in existing technologies have been solved, enabling smooth rainwater drainage and improved construction efficiency.

CN116623889BActive Publication Date: 2026-01-30ZHONGTIAN CONSTR GROUP
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Patent Information

Application Number
CN202310780179.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-06-28
Publication Date
2026-01-30
Estimated Expiration
2043-06-28

AI Technical Summary

Technical Problem

Existing slope-finishing techniques require two separate pouring and finishing processes, resulting in a long construction period and the concrete being prone to flow and instability issues due to different slope ratios.

Method used

Using slope-finding tools with cross-sections adapted to different gradients, and combining steep and gentle slopes, concrete is formed in one construction step. PVC pipes are used as internal inserts, and steel mesh and slope-finding tools are used as templates to ensure that concrete with different gradients is formed in one step.

Benefits of technology

This method enables the one-time molding of concrete with different roof slope ratios, avoiding problems such as flow and instability, shortening the construction cycle, improving construction efficiency, and ensuring smooth rainwater drainage.

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Abstract

This invention discloses a method for slope finding at roof drain outlets, comprising: (1) roof waterproofing layer construction and placement of isolation layer; (2) selection of slope finding tool with appropriate cross-section; (3) determination of the height of slope change point; (4) installation of steel mesh; (5) fabrication and installation of slope finding tool; (6) setting of internal insert and completion of elevation; (7) construction of steep slope surface and gentle slope surface inside and outside the slope finding tool respectively. This invention also discloses a slope finding tool for the above-mentioned slope finding method. In this technical solution, the slope finding tool is set up and used as a pouring template during construction, which solves the problem of waiting for initial setting before fine finishing when different slope ratios are formed during slope finding, and also avoids problems such as concrete flowing and not fixing due to different slope ratios, realizing one-time pouring and simultaneous finishing, and slope surfaces with different slope ratios can be formed inside and outside the slope finding tool respectively, thereby improving construction efficiency.
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