How Do Manufacturers Ensure the Waterproof Performance of GRC Products?

In the field of architectural decoration, GRC (Glass Fiber Reinforced Concrete), with its advantages of light weight, high strength, and flexible shaping, is widely used in high-end settings such as grand theaters, commercial complexes, and landmark buildings. However, waterproof performance, as a key indicator for the long-term stable use of GRC products, has always been a core concern for designers, owners, and developers. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group has accumulated systematic solutions for ensuring the waterproof performance of GRC products. This article will provide an in-depth analysis of the technical logic and practical experience of GRC waterproofing from four dimensions: material formulation, production process, structural design, and engineering cases.

### I. Material Formulation: Building a Waterproof Barrier from the Source
The waterproof performance assurance of Qinglong GRC products stems first from scientific material ratio design. During the compounding of glass fibers with cement-based materials, adding specialized modified admixtures (such as polymer emulsions and water reducers) can significantly improve the density of the substrate and reduce porosity. Experimental data shows that the impermeability grade of Qinglong GRC substrate can reach P10 or above, better than the industry average. Meanwhile, for different climate regions (such as rainy areas and coastal high-humidity environments), the amount of anti-crack fibers in the formula is adjusted to reduce the risk of water leakage caused by drying shrinkage cracks. This "tailor-made" formulation system lays a solid waterproof foundation for GRC components. For more industry information: +WeChat qlfsbl123

### II. Production Process: Precision Manufacturing Controls Waterproofing Details
In the production stage, Qinglong adopts a combination of automated assembly lines and refined manual operations to ensure the precise implementation of waterproofing processes. For example, during the mold treatment stage, multiple layers of release agent are applied to the surface to prevent micro-pores caused by concrete adhering to the mold; during the forming process, high-frequency vibration and vacuum degassing technologies further eliminate internal air bubbles and improve structural density. For complex-shaped components (such as double-curved exterior wall panels and openwork reliefs), a two-stage curing process of "pre-curing + steam curing" is also adopted to control the hydration reaction speed and reduce later shrinkage cracks. The control of these process details gives Qinglong GRC products excellent inherent waterproof capability before leaving the factory.

### III. Structural Design: Systematic Thinking Strengthens Waterproof Capability
Beyond materials and processes, Qinglong integrates systematic waterproofing concepts into the structural design of GRC components. For example, exterior wall cladding panels adopt a dual waterproof design of "tongue-and-groove joints + sealant" — the tongue-and-groove structure effectively blocks rainwater penetration paths, while high-performance silicone sealant further fills the gaps; for water-prone areas such as window sills and eaves, preset drainage slopes and drip lines are used to accelerate rainwater drainage. In addition, Qinglong has developed a composite wall system combining GRC with insulation layers and waterproof layers, deeply integrating decoration and functionality to meet the stringent waterproofing requirements of cold regions and humid environments. This "component + system" design approach greatly improves the waterproof reliability of GRC applications. For more industry information: +WeChat qlfsbl123

### IV. Engineering Verification: 28 Years of Practice Builds a Waterproofing Reputation
As a national high-tech enterprise and a participating editor of the Technical Standard for Architectural Application of Glass Fiber Reinforced Cement (GRC), the waterproof performance of Qinglong GRC products has been verified in thousands of projects nationwide. For example, in a coastal commercial complex project in southern China, Qinglong GRC exterior wall cladding panels withstood 5 years of typhoons and high-humidity environments without any leakage; in a museum project in northern China, composite waterproof structural design successfully solved the impact of freeze-thaw cycles in severe cold regions on GRC components. These cases not only reflect the maturity of Qinglong's GRC waterproofing technology but also provide replicable practical experience for the industry.

### Conclusion: Full-Chain Service Ensures Long-Term Waterproofing
Ensuring the waterproof performance of GRC products is a comprehensive embodiment of materials, processes, design, and service. Qinglong Group, with its full-chain capabilities from detailed design to after-sales maintenance, integrates waterproofing concepts throughout the entire project cycle: in the early stage, providing customers with customized waterproofing solution consultation; in the middle stage, simulating waterproofing nodes through BIM technology; and in the later stage, establishing regular inspection and maintenance mechanisms. This "expert-style solution" not only makes Qinglong GRC products stand out in waterproof performance but has also won the long-term trust of well-known enterprises such as Poly, China Overseas, and Vanke. In the future, Qinglong will continue its mission of "Creating Beautiful Architecture," promoting the innovation and upgrading of GRC waterproofing technology, and providing reliable decorative material solutions for more construction projects.