How to Clean Dirty GRC Surfaces? Qinglong GRC Professional Cleaning Technical Guide

Scientific cleaning of GRC surfaces is an important part of maintaining their aesthetics and functionality. Differentiated cleaning solutions are required based on the type of dirt and degree of contamination. Based on 28 years of maintenance experience, Qinglong GRC has developed a professional cleaning technology system tailored to different contamination situations.

In a cultural center project in Beijing, the GRC curtain wall was severely contaminated by smog. Qinglong adopted a three-stage cleaning solution: pre-treatment used a neutral cleaner to soften attached deposits; the main cleaning used low-pressure steam (0.3MPa, 50℃) combined with soft brushes; post-treatment involved spraying an anti-stain coating. This solution removed stubborn stains while keeping the material damage rate below 0.1%. For carved texture areas in particular, ultrasonic atomization cleaning technology was used, perfectly preserving the fine details. After cleaning, the project achieved a color difference of ΔE≤2, meeting museum-grade cleaning standards.

Routine Dust Cleaning

Remove surface dust monthly with a soft brush or vacuum cleaner. Rinse quarterly with a neutral cleaner (pH6-8) combined with clean water at a pressure of ≤3MPa. For key areas, wipe with a cotton cloth to avoid scratching the surface.

Stubborn Stain Treatment

For oil stains, soak with a dedicated emulsifier for 10 minutes before washing. For rust stains, apply oxalic acid solution (concentration ≤3%) as a spot treatment. For biological fouling, pre-treat with a mildew inhibitor before physical removal. These methods specifically address special stains.

Deep Cleaning Process

Conduct thorough cleaning every 2-3 years using steam cleaning equipment. Use ultrasonic cleaning technology for intricate carved areas. After cleaning, a hydrophobic agent must be sprayed to form a protective film. This deep cleaning restores the material's original color.

Special Environment Cleaning

Coastal areas require additional desalination procedures to prevent chloride corrosion. Industrial areas need focused treatment of acid rain traces. Northern regions should pay attention to the timing of cleaning during freeze-thaw periods. These site-specific measures ensure cleaning effectiveness.

Professional cleaning requires scientific methods. Qinglong GRC provides cleaning technical guidance and agent supply services.