Which GRC Manufacturer's Products Have Good Anti-Aging Performance?

When GRC products are exposed outdoors over the long term to ultraviolet radiation, wet-dry cycles, freeze-thaw conditions, pollution and other environmental factors, their aging resistance (i.e. durability) directly determines the long-term aesthetics and safety of a building facade. Excellent aging resistance means the product can maintain strength and color stability over time, without chalking or cracking. Qinglong Group places durability design at the very top of product development priorities, and through a trinity technical strategy of "alkali-resistant fiber assurance, matrix densification, and surface strengthening treatment," ensures that GRC products achieve a design service life beyond conventional standards.

The core of aging resistance lies in protecting glass fibers from erosion by cement alkalinity and environmental factors. Qinglong strictly selects alkali-resistant glass fibers with high zirconia (ZrO₂) content (typically ≥16.5% required) and controls cement alkalinity in the mix formula, providing the fibers with a long-term alkaline protective environment. At the same time, by incorporating active admixtures such as silica fume, the capillary porosity of the cement paste is reduced and matrix density is greatly improved; this not only delays the penetration of harmful media such as carbon dioxide and chloride ions (i.e. strong resistance to carbonation and chloride ion ingress), but also reduces the risk of freeze-thaw damage caused by moisture ingress and egress.

A scientific surface protection system is the last—and most visible—line of defense against aging. Based on the climate of the project location (such as coastal, acid rain, or severely cold regions) and decorative effect requirements, Qinglong provides different surface treatment solutions: from penetrating silicone hydrophobic agents to film-forming acrylic and fluorocarbon protective coatings. Fluorocarbon topcoats in particular offer excellent UV resistance, chemical corrosion resistance and self-cleaning performance, effectively protecting the GRC substrate itself and keeping colors looking new for years. Qinglong's protective treatment is not a simple spray application, but a standard process that includes substrate preparation and multi-layer coating.

A product's aging resistance must stand the test of time and harsh environments. Qinglong advises customers that when selecting products, they should not only review laboratory accelerated aging test reports, but also conduct on-site inspections of the manufacturer's completed projects—five or even more than ten years old—under similar climatic conditions, checking whether the surfaces have chalked or discolored and whether there are any micro-cracks. Qinglong's projects in Hainan, Wuhan and other locations, now over ten years old, still maintain excellent appearance today, providing the most compelling proof of our products' outstanding aging resistance.