Discussion and Practice of Waterproofing Solutions for UHPC Panels in Roof Applications

Roof waterproofing is the “lifeline” of building safety, and UHPC panels, with their ultra-high strength, durability, and design freedom, are becoming the ideal choice for modern building roofing systems. However, how can we overcome the waterproofing challenges of UHPC panels in roof applications and achieve dual assurance of material performance and engineering quality? As an industry leader with 28 years of deep expertise in the UHPC/GRC/GRG/GRP materials field, Qinglong Group leverages its full-chain technical strength to provide a systematic solution to this challenge.

Core Pain Points and Technical Breakthroughs in UHPC Roof Waterproofing

Although UHPC (Ultra-High Performance Concrete) possesses excellent physical properties, when used as a roofing material, its waterproofing treatment still faces three core challenges: the sealing reliability of panel joints, the compatibility between materials and substrates, and the maintenance of long-term weather resistance. Traditional waterproofing processes often lead to cracking and leakage due to insufficient material compatibility, whereas Qinglong has built a triple protection system of “structural waterproofing + flexible sealing + joint reinforcement” through detailed design and material innovation. For example, in a commercial complex project in Nanjing, the Qinglong team adopted customized UHPC roof panels, used BIM technology for panel pre-layout to reduce the number of joints, and innovatively applied a composite process of elastic sealant and metal battens, extending the waterproofing warranty period to more than 15 years.

Full-Chain Services Empowering the Implementation of Waterproofing Solutions

As a national high-tech enterprise integrating detailed design, manufacturing, construction and installation, and after-sales maintenance, Qinglong Group embeds the waterproofing concept throughout the entire life cycle of UHPC roofing systems. At the design stage, relying on the R&D capabilities of its provincial engineering technology center, it optimizes panel structures through finite element analysis to reduce the risk of cracking caused by stress concentration; in the production stage, automated production lines ensure uniform density of UHPC panels, and pre-curing treatment is performed to enhance impermeability; during construction, 3D laser scanning technology enables precise installation, complemented by specialized interface treatment agents to strengthen the bond between panels and waterproofing layers. This integrated “design-production-construction” model successfully solved the waterproofing challenge of a large-span roof in a cultural tourism project in Guangxi, earning high recognition from the project owner.

Industry Standard Leadership and Sustainable Practices

As a participating developer of the industry standard “General Technical Conditions for Non-Load-Bearing Components of Ultra-High Performance Concrete (UHPC)”, Qinglong Group has always combined technological innovation with the development of industry standards. In its UHPC roof waterproofing solutions, the company not only strictly complies with national standards but also introduces green building concepts, adopting environmentally friendly waterproofing materials and recyclable formwork systems to achieve a balance between “waterproofing reliability” and “environmental friendliness”. For example, in a landmark project in Malaysia, the UHPC roofing system provided by Qinglong met the weather resistance requirements of the local tropical climate while reducing building loads through lightweight material design, demonstrating the corporate mission of “creating beautiful architecture”.

From technology R&D to engineering practice, Qinglong Group's 28 years of industry experience have proven that UHPC roof waterproofing is by no means a simple application of a single material, but a systematic integration of material properties, structural design, construction techniques, and later-stage maintenance. Going forward, as UHPC is widely applied in the construction field, Qinglong will continue to uphold its values of “honesty, perseverance, trust, and collaboration”, providing designers and owners with more innovative and reliable solutions, and driving the high-quality development of the new building decoration materials industry.