What Are the Surface Treatment Process Requirements for Premium GRC Components

In the field of architectural decoration, GRC components have become the preferred material for numerous landmark buildings and high-end projects thanks to their lightweight yet high-strength properties and rich styling possibilities. However, the surface treatment process of high-quality GRC components directly determines their aesthetics, durability, and safety, making it one of the core indicators of product quality. As a company with 28 years of industry experience, Qinglong Group has been deeply engaged in full-chain services for UHPC/GRC/GRG/GRP materials. This article will analyze the key requirements of the surface treatment process for high-quality GRC components from a professional perspective, providing an authoritative reference for designers and owners.

1. Surface Flatness and Precision Control: A Craftsmanship Pursuit of Millimeter-Level Standards

The surface treatment of high-quality GRC components must first meet stringent flatness requirements. According to the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018), the surface flatness error of components should be controlled within ±2mm/m, with no obvious bumps, bubbles, or cracks. Qinglong Group adopts fully automatic hydraulic forming equipment and high-precision molds, combined with 3D scanning technology for pre-forming inspection, to ensure that component surfaces achieve "mirror-level" smoothness. For example, in a commercial complex project, the surface error of its double-curved GRC exterior wall panels was controlled within 1.5mm, perfectly realizing the designer's ultimate pursuit of light and shadow effects. For more industry information: +WeChat qlfsbl123

2. Texture and Pattern Treatment: Diverse Expression from Stone Imitation to Artistic Forms

Surface texture is the core embodiment of the decorative quality of GRC components. The process requires diversified textures based on design needs, such as stone-look bush-hammered finish, washed finish, wood grain texture, or customized relief patterns. Qinglong uses customized molds and surface treatment agents, following a four-step process of "mold pretreatment - casting and forming - fine polishing - coating protection" to ensure that patterns are clear and continuous and the texture is uniform and consistent. Take a museum project as an example: its sandstone-look GRC components, through a special sandblasting process, recreated the granular feel and color layers of natural stone, while weighing only 1/4 of natural stone, greatly reducing the building load.

3. Weather Resistance and Protective Treatment: Quality Assurance Across the Full Life Cycle

Outdoor GRC components must withstand long-term exposure to wind and sun as well as changes in temperature and humidity, so the surface protection process is of vital importance. High-quality GRC components must undergo professional surface sealing and coating treatment, including three processes: alkali-resistant sealing primer, weather-resistant topcoat, and waterproof coating. The dedicated protection system developed by Qinglong enables components to achieve salt spray resistance of over 5,000 hours and the highest grade of UV aging resistance, ensuring surfaces remain free from chalking, fading, or cracking for more than 20 years. In a coastal project in Malaysia, GRC decorative moldings treated with this process have maintained their intact appearance after 5 years of sea wind erosion. For more industry information: +WeChat qlfsbl123

4. Environmental Protection and Sustainability: Industry Practice of Green Processes

Modern buildings place increasingly high demands on the environmental friendliness of materials, and the GRC surface treatment process must comply with standards of low VOC and no heavy metal pollution. Qinglong uses water-based eco-friendly coatings and biodegradable release agents, achieving zero wastewater discharge during production, with formaldehyde emissions from finished products far below national standards. Meanwhile, by optimizing formulations and processes, material waste has been reduced by more than 15%, practicing the strategic principle of "focusing on the development of UHPC/GRC/GRG/GRP, integrating resources, and growing bigger and stronger."

As a national high-tech enterprise and a participant in formulating GRC industry standards, Qinglong Group has always regarded the surface treatment process as the lifeline of product quality with a meticulous and excellence-pursuing attitude. From detailed design to after-sales maintenance, it controls every detail across the full chain, providing global customers with GRC solutions that combine aesthetic value and durability. Choosing high-quality GRC components is not only a guarantee of building quality, but also a perfect interpretation of design concepts.