I. Basic Information

Award-winning Project Name Research and Application of Key Technologies for Integrated Metal Roofing Systems Resistant to Strong Winds and Heavy Rainfall

Award-winning Project Number ：2025-KJ-1-45

Main completing unit ： OHC Construction Group Co., Ltd. Beijing University of Technology Fujian Ningde Nuclear Power Co., Ltd. Ruitai Architectural Technology (Beijing) Co., Ltd. Zhong’an Xianghe (Tianjin) Construction Engineering Co., Ltd. China Academy of Building Research Co., Ltd. Zhejiang Provincial Institute of Architectural Design Co., Ltd. Tianjin University

Principal contributors: Wang Yue, Zhu Jun, Xue Yu, Duo Yuegang, Tian Zhiwei, Sun Guojun, Duo Xuebin, Xu Shengyan, Yao Bingnan, Xu Fuxing, Zheng Haitao, Liu Shujun, Guo Jing, Xu Shiwen, Du Yansheng

I. Project Overview

Project Background Metal roofing systems offer advantages such as light self-weight, a high degree of factory prefabrication, efficient construction, and recyclability. In recent years, they have been widely adopted in newly built industrial plants, logistics warehouses, cold-chain centers, sports venues, and public buildings across China, becoming an integral component of building envelope systems. According to relevant data, in 2023 the nationwide area of metal roofing applications exceeded 200 million square meters, with an annual compound growth rate consistently above 8%, reflecting a development trend characterized by expanding scale, diversified product types, and broad regional distribution. Notably, the southern coastal regions, along with East and South China, account for more than 60% of these applications. These areas experience high temperatures and humidity, frequent rainfall, and frequent severe wind events, placing stringent demands on the waterproofing reliability, wind‑resistance, and air‑tightness, thermal insulation, and heat‑retention performance of roofing systems. To address these needs, the project team conducted comprehensive research on key technologies for metal roofing systems capable of withstanding extreme wind and rain, successfully developing a 360° laminated standing‑seam metal roofing system. Centered on the concept of “structural sealing replacing membrane sealing,” this system simplifies its construction, enabling convenient installation and highly effective waterproofing even under severe wind and rain conditions. The project has established a standardized, systematic, and independently developed technical framework for metal roofing waterproofing in China and produced the national standard drawing set “Metal Panel Building Construction (I) – 360° Laminated Standing‑Seam Metal Roofing System” (24CJ113‑1), thereby further enhancing building waterproofing quality, reducing construction and maintenance costs, and advancing the metal envelope industry toward greater assembly‑based efficiency, higher quality, and sustainability.

The innovative achievements are as follows: ：

Innovation 1: A novel metal roofing system featuring a “360° laminated standing seam” with Class‑I waterproofing has been proposed, and a field‑ready, full‑length pre‑glazing process has been developed, enabling single‑layer metal roofs to achieve Class‑I waterproofing without the need for additional waterproof membranes. Additionally, high‑wave metal roofing panels and roofing systems capable of withstanding Typhoon Category 17 have been engineered, meeting stringent wind‑uplift resistance requirements under the extreme conditions of powerful coastal typhoons.

Innovation No. 2: An ultra‑strong sliding support system has been developed, integrating high‑strength steel with a low‑friction slip mechanism, thereby effectively addressing the technical challenges of enabling metal roofs to withstand the combined effects of thermal expansion and contraction and strong winds.

Innovation No. 3: A standardized structural design and fabrication‑installation process for the “360° laminated standing seam” metal roofing system have been developed, effectively addressing the challenge of ensuring waterproofing and leak‑proof performance at critical details such as ridge lines, gutters, eaves, daylighting strips, and penetrations for piping.

Deployment and Application Status: The research outcomes can be leveraged by design institutes to provide performance evaluation and design services for metal enclosure systems under extreme wind and rainfall conditions, or by manufacturers of metal enclosure systems and construction‑installation firms to deliver engineering services. To date, the project’s results have been extensively applied in critical infrastructure projects—such as public buildings, automotive production facilities, logistics and warehousing complexes, power plants (including nuclear and thermal plants), and railway station canopies—for assessing the disaster‑resilience of metal enclosure systems against severe wind and rain and for enhancing their performance.

Hebei Intelligent Manufacturing Industrial Park project, roof area 22 Ten thousand square meters.

SF North China Smart Logistics, roof area 17.6 Ten thousand square meters.

Prologis Warehousing and Logistics Park