What Are the Steps for GRC Installation? Standardized Process and Key Points Explained

GRC installation follows the standardized process of "preliminary preparation - positioning and installation - fixing and reinforcement - acceptance and maintenance", with clear operational specifications and quality requirements for each step. Leading manufacturers such as Qinglong provide full-process technical support to ensure installation quality and safety.

I. Preliminary Preparation: Laying the Foundation for Installation

Preliminary preparation is key to successful installation, requiring attention to technology, materials, and personnel. Technical preparation: familiarize yourself with the design drawings and clarify the installation positions and fixing methods of components; complex projects require BIM modeling and installation simulation, and Qinglong issues specialized installation plans for double-curved and irregular components. Material acceptance: check the dimensional accuracy and appearance quality of GRC components (no cracks or damage) and strength test reports to ensure compliance with design requirements; Qinglong components have undergone quality inspection before leaving the factory, so only the model and quantity need to be verified on site. Substrate inspection: verify the flatness, strength, and verticality of the installation substrate (concrete, steel structure, brick wall); the substrate flatness error should be ≤5mm/m, and substrates with insufficient strength require reinforcement treatment. Qinglong provides technical standards for substrate treatment, such as removing dust and oil stains from concrete substrates.

II. Substrate Treatment and Layout Positioning: Precise Position Control

Substrate treatment and layout directly affect installation accuracy. Substrate treatment: clean dust, debris, and oil stains from the substrate surface, repair cracks and depressions, and apply a bonding agent when necessary to enhance adhesion; for damp substrates, Qinglong recommends applying a moisture-proof agent to avoid affecting bonding performance. Layout positioning: according to the design drawings, use laser rangefinders, theodolites, and chalk lines to mark installation reference lines (horizontal lines, vertical lines, and spacing lines) on the substrate, clarifying the installation positions and elevations of components; complex components require control points, and Qinglong adopts three-dimensional layout technology to ensure a positioning error of ≤2mm.

III. Component Installation and Adjustment: Positioning and Calibration

Component installation should proceed step by step with attention to detailed adjustments. Component handling: based on component weight and dimensions, choose manual handling or lifting equipment, and avoid collision damage during transport; Qinglong uses soft lifting slings for large components to protect their surfaces. Positioning installation: initially position components according to the reference lines, adjust their position, flatness, and verticality, and check in real time with spirit levels and straightedges to ensure compliance; straight lines must be kept straight, and curved components must conform to the designed curvature. Joint reservation: based on component type and ambient temperature, reserve expansion joints (width 5-10mm) to prevent component cracking caused by thermal expansion and contraction; Qinglong adjusts the reserved joint width according to the ambient temperature of the installation environment.

IV. Fixing, Reinforcement, and Joint Treatment: Ensuring Stability and Aesthetics

Fixing and joint treatment are the core steps of installation. Fixing and reinforcement: choose an appropriate fixing method based on component type (dry hanging, bonding, embedded, etc.) to ensure secure fixing; heavy components require multi-point fixing, and Qinglong's double-curved curtain wall components use "four-point hanging + chemical anchor bolts" dual fixing for enhanced stability. Joint treatment: clean dust and debris from component joints, insert foam rods, then inject sealant; the sealant should be full and flat, flush with the component surface; Qinglong recommends neutral silicone sealant, which combines elasticity and weather resistance to prevent water seepage and cracking. Anti-corrosion treatment: apply anti-corrosion coating to metal connectors and welded joints to prevent rust from affecting fixing performance; Qinglong galvanizes or applies anti-corrosion treatment to all metal parts.

V. Acceptance and Maintenance: Ensuring Installation Quality

Acceptance and maintenance are the final steps of installation. Installation acceptance: conduct acceptance in accordance with the Standard for Quality Acceptance of Building Curtain Wall Engineering (GB/T 50210), checking component position, flatness, verticality, fixing firmness, joint treatment, etc.; Qinglong implements a "three-level acceptance" system (team self-inspection, technical re-inspection, and owner's final inspection), with an acceptance report signed upon passing. Cleaning and maintenance: clean sealant residue, dust, and stains from component surfaces to maintain a neat appearance. Later maintenance: inform the owner of daily maintenance precautions, such as avoiding impact from heavy objects and regularly checking sealant for aging; Qinglong provides free inspection and repair services within the warranty period.