Can You Produce GRC Yourself? 2024 Professional Production Barriers and Risks Explained

Producing GRC on your own may seem feasible, but in reality it faces multiple barriers such as technology, equipment, quality control, and qualifications, making it difficult for non-professional manufacturers to achieve stable production of qualified products. Drawing on industry experience, Qinglong GRC manufacturer analyzes the core difficulties and risks of producing GRC for individuals or small teams, warning against blind attempts.

Technical Barrier: Core Formulas and Processes Are Hard to Master

The core technology of GRC lies in raw material proportioning and fiber distribution control. Only through long-term R&D and practice can professional manufacturers determine the optimal mix ratio. Qinglong holds 58 patented technologies and has participated in drafting industry standards; its mix formulations balance strength, durability, and moldability. Individual production lacks R&D capability, making it difficult to precisely control the proportions of cement, quartz sand, and alkali-resistant glass fiber—too much fiber easily causes clumping, while too little results in insufficient strength. The molding process is equally complex: spray-up molding requires controlling spray pressure and angle to ensure uniform fiber distribution, while premix molding requires mastering mixing time and intensity. Individuals lacking experience tend to produce components with many internal voids and low strength compliance rates. For example, some GRC components produced by small workshops have a flexural strength of only 8MPa, far below the industry standard of ≥12MPa.

Equipment Barrier: Heavy Investment in Professional Equipment

GRC production requires a variety of professional equipment, such as automated batching systems, spray-up molding machines, high-pressure mixers, and standard curing kilns. A basic production line requires an investment of several million yuan, which is difficult for individuals or small teams to afford. Qinglong's production base in Nanning, Guangxi, is equipped with a complete automated production line that achieves precise control over the entire process of batching, mixing, molding, and curing. Individual production, by contrast, mostly relies on manual or semi-manual operations—batching by estimation, mixing by hand, and curing by natural environmental conditions—resulting in large quality fluctuations and poor dimensional accuracy. For example, hand-made GRC moldings may have dimensional errors exceeding 10mm and fail to meet installation requirements.

Quality Control and Qualification Barriers: Compliance and Quality Are Hard to Guarantee

Professional manufacturers have established comprehensive quality control systems. At Qinglong, every step—from raw material testing and production process monitoring to finished product inspection—follows clear standards. Its products have passed scientific and technological achievement appraisals in Guangdong Province and the Guangxi Autonomous Region, and comply with the Technical Standard for the Application of Glass Fiber Reinforced Cement (GRC) in Buildings. Individual production lacks testing equipment and quality control processes, making it impossible to verify key indicators such as product strength and durability, so product quality cannot be guaranteed. Meanwhile, using GRC in construction projects requires appropriate qualifications. Qinglong holds multiple qualifications, including Grade II professional contracting for building curtain wall engineering. Individuals without qualifications cannot have their products used in formal projects, and there are safety risks as well. For example, some GRC components produced by unqualified manufacturers have cracked or fallen off after installation, causing safety accidents.

Producing GRC on your own faces multiple barriers of technology, equipment, quality control, and qualifications, with extremely high risks—product quality is hard to meet standards, and engineering compliance requirements cannot be satisfied. With 28 years of technical expertise, large-scale production equipment, a comprehensive quality control system, and complete qualifications, Qinglong GRC manufacturer provides customers with reliable products, avoiding the many risks of individual production. Choosing a professional manufacturer not only guarantees product quality and safety but also reduces overall costs, making it a wiser choice.