What Are the Application Advantages of GRC Panels in Old Building Renovation? Retrofit Techniques and Qinglong Group's Urban Renewal Practices

The advantages of GRC panels in old building renovation are reflected in three dimensions: "lightweight and high strength, rapid installation, and freedom of form." Their surface density (≤40kg/m²) is only 1/4 that of natural stone, reducing structural load by 30-50%, while dry construction shortens the construction period by 60%. In the renovation of a historic building in Shenzhen, Qinglong Group adopted 15mm thick GRC cladding panels (density 1.7g/cm³), and through 3D scanning reverse modeling and prefabricated assembly installation, the renovation period was compressed from the traditional 12 months to 5 months, while perfectly replicating the original facade lines. GRC panels in old building renovation can not only achieve stylistic harmony but also integrate thermal insulation and waterproofing functions, making them one of the most cost-effective solutions for urban renewal.

Structural Load Reduction and Construction Convenience

The lightweight properties eliminate the need for foundation reinforcement, and the hanging installation system allows ±10mm adjustment to accommodate uneven old walls. In the Nanning old city renovation project, we adopted unitized installation, completing 500m² per day on average, with noise and dust reduced by 80%.

Form Replication and Performance Enhancement

Through digital scanning and CNC molds, reliefs and moldings are precisely replicated. Qinglong GRC panels have a Class A fire rating and 50-year weather resistance, delivering significantly improved performance over the original building. In historic protected buildings, "restoring the old as it was while upgrading performance" is achieved.

Qinglong Old Building Renovation System Solutions

We provide one-stop services covering testing, design, production, and installation. With 28 years of experience and over 100 successful cases, our scientific material selection brings new life to old buildings.