How to Fix GRC After Installation? 2024 Reliable Fixing Methods and Safety Assurance

The fixing quality after GRC installation directly determines component stability and service safety, so the appropriate fixing method must be selected according to component type and installation scenario. With 28 years of technical expertise, Qinglong GRC manufacturer has developed and applied multiple reliable fixing methods to provide safety guarantees for different projects.

Dry-Hanging Fixing: The Mainstream Choice for Exterior Wall Decoration

Dry-hanging fixing is the mainstream method for GRC exterior wall decoration, offering advantages of easy installation, uniform load distribution, and convenient maintenance. This method connects GRC components to the building substrate through stainless steel hangers, and the connection points between hangers and components, as well as the substrate, must undergo load calculations to ensure load-bearing capacity meets standards. Qinglong uses customized stainless steel hangers with a thickness of ≥5mm, fixed with expansion bolts or embedded parts; hanger spacing is adjusted according to component weight, typically 600-1000mm. The GRC special-shaped double-curved panel installation at Poly Peninsula No.1 in Hainan adopted a dry-hanging system, with installation precision controlled within ±2mm. The self-weight of components is evenly transferred to the substrate through the hangers, with no risk of loosening or falling off over long-term use, making it perfectly suited for large curtain wall projects.

Welding Fixing: Strong Support for Large Components

Welding fixing is suitable for large, heavy GRC components such as oversized sculptures and large roof components. It connects the component's steel skeleton to the building's embedded parts through welding, providing high fixing strength and strong stability. Qinglong's welding fixing uses CO2 gas shielded welding, with weld seam height at welding points of ≥6mm. After welding, anti-corrosion treatment is performed (rust removal, anti-corrosion paint application, and sealant coating) to prevent rust from affecting the fixing effect. For the 120,000-square-meter roof GRC finish at the Hainan International Convention and Exhibition Center, some large curved and twisted components used welding fixing combined with a dry-hanging system to ensure stability under strong wind loads; the related technology was published in the journal China Building Waterproofing. Welding fixing must be performed by professional welders to ensure welding quality meets standards.

Adhesive Bonding Fixing: A Convenient Solution for Lightweight Components

Adhesive bonding fixing is suitable for lightweight GRC components (weight <50kg), interior decoration components, or auxiliary fixing. It bonds components to the substrate using a special adhesive, offering convenient construction and a clean appearance. Qinglong uses a GRC-specific polymer adhesive with a bonding strength of ≥2.5MPa, far exceeding industry standards. Before bonding, the substrate surface must be cleaned to ensure it is free of dust and oil stains; after bonding, temporary fixing is applied, which is removed once the adhesive is fully cured (usually 24 hours). Some GRC interior components at the auditorium of the American International School of Guangzhou used adhesive bonding fixing combined with a small amount of mechanical fixing, which ensures fixing reliability while avoiding excessive fixing points that would affect the decorative effect. Adhesive bonding fixing requires attention to ambient temperature; avoid construction in low-temperature (<5°C) or high-humidity environments to ensure bonding effectiveness.

The fixing method after GRC installation should be adapted to local conditions, selected based on component characteristics and project requirements. Qinglong GRC manufacturer continuously innovates in fixing technology and holds multiple related patents. Its fixing systems have undergone rigorous load testing and long-term practical verification. For example, the GRC curtain wall at the Pingshan High-tech Zone Comprehensive Service Center in Shenzhen adopted a composite fixing method of dry-hanging plus partial welding and won the Luban Award, confirming the reliability of the fixing method. Only by selecting an appropriate fixing method, combined with professional construction and quality control, can the long-term stable and safe use of GRC components be ensured.