How to Fix GRC After Installation? Core Fixing Methods and Safety Assurance Explained

The fixing quality after GRC installation directly affects the long-term stability of components and building safety. An optimal fixing method must be selected based on component type, installation scenario, and load conditions, combined with reliable fixing materials and standardized construction. With 28 years of full-chain GRC service experience, Qinglong has summarized four core fixing methods, whose safety and reliability have been verified across thousands of projects.

Dry-Hanging Fixing: The mainstream choice for curtain wall GRC. Dry-hanging fixing connects GRC components to the building substrate through metal hangers, without relying on adhesives, offering more uniform load distribution and easy disassembly, suitable for exterior curtain walls, large decorative panels, and similar scenarios. In the Shenzhen Pingshan High-tech Zone Comprehensive Service Center project, Qinglong used customized stainless steel hangers to dry-hang GRC curtain wall panels. The hangers fit precisely into the installation slots reserved on the components and were secured to the substrate steel frame with expansion bolts, ensuring even load distribution on each component. This fixing method effectively avoids the risk of components falling due to adhesive aging, while the reserved gaps facilitate later maintenance. Qinglong's dry-hanging system has passed wind load and seismic resistance tests, meeting the stringent requirements of large public buildings.

Welding Fixing: Strong support for large components. For heavy, large-sized GRC components (such as large Roman columns, sculptures, and double-curved panels), welding fixing provides stronger load-bearing capacity. In the Hainan Poly Peninsula No. 1 project, when installing 6000mm×3000mm GRC special-shaped double-curved panels, Qinglong adopted an internal structural steel frame and rear steel frame system, welding the components firmly to the substrate steel frame. The welding points were treated with anti-rust coating to ensure no corrosion over long-term use. Welding fixing must be performed by professional welders. Qinglong's construction team holds special engineering construction qualifications, and welding quality complies with industry standards. Concealed work inspections are also carried out on welding points to ensure there are no safety hazards.

Adhesive Fixing: A convenient choice for small components. Adhesive fixing uses dedicated GRC adhesive to bond components directly to the substrate. It is simple to operate and relatively low-cost, suitable for lightweight components such as small moldings, window surrounds, and decorative panels. The dedicated adhesive selected by Qinglong features high strength, anti-aging, waterproof and moisture-proof properties. In the GRC balustrade and window surround project at Zhongshan Kaiyin New Town, a combination of adhesive and mechanical fixing was used to ensure secure component installation. When using adhesive fixing, the substrate must be flat and clean, and the adhesive must be applied evenly. Qinglong's construction specifications require the bonding area to be no less than 70% of the component's contact area, along with on-site pull-out tests to verify bonding strength.

Embedded Fixing: An aesthetic solution for concealed fixing. Embedded fixing inserts part of the GRC component into the building substrate or a reserved slot, then reinforces it with mortar or bolts. The fixing effect is concealed and does not affect the building's appearance, making it suitable for interior decorative components, landscape features, and similar scenarios. In the installation of the GRC cultural corridor for the Yiyang County Xinjiang River Ecological Restoration project, Qinglong used embedded fixing to set components into concrete bases, reinforced with cement mortar filling, ensuring structural stability while allowing the landscape facilities to blend perfectly with the natural environment. Embedded fixing requires installation slots to be reserved during the early design phase. Qinglong's detailed design team communicates with clients in advance to optimize the connection between components and substrate, ensuring both fixing effectiveness and aesthetics.

Whichever fixing method is adopted, Qinglong will carry out customized design based on actual project conditions, selecting the optimal solution by considering factors such as component weight, load conditions, and service environment, combined with comprehensive quality inspection and acceptance procedures, ensuring that every GRC component is firmly fixed and stable over the long term.