How to Clean Dirty GRC Surfaces: Qinglong GRC Professional Cleaning Guide

Scientific cleaning of GRC surfaces is a crucial step in maintaining their aesthetics and functionality. Differentiated cleaning solutions are required depending on the type of dirt and degree of contamination. Drawing on 28 years of maintenance experience, Qinglong GRC has developed a professional cleaning technology system tailored to different contamination conditions.

In a cultural center project in Beijing, the GRC curtain wall was severely contaminated by smog. Qinglong adopted a three-stage cleaning solution: pretreatment with a neutral detergent to soften deposits; main cleaning using low-pressure steam (0.3MPa, 50℃) combined with a soft-bristle brush; and post-treatment with a spray-applied anti-fouling coating. This solution removes 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 detail features. After cleaning, the project achieved a color difference of ΔE≤2, meeting museum-grade cleaning standards.

Daily Dust Cleaning

Remove surface dust monthly with a soft-bristle brush or vacuum cleaner. Each quarter, rinse with clean water at a pressure ≤3MPa combined with a neutral detergent (pH6-8). Wipe key areas with a cotton cloth to avoid scratching the surface.

Stubborn Stain Treatment

For oil stains, soak with a special emulsifier for 10 minutes before cleaning. Treat rust stains by spot-applying oxalic acid solution (concentration ≤3%). For biological contamination, pretreat with a mold inhibitor before physical removal. These methods specifically address special stains.

Deep Cleaning Process

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

Cleaning in Special Environments

Coastal areas require an additional desalination step to prevent chloride corrosion. Industrial zones should focus on treating acid rain marks. Northern regions should carefully choose the timing of cleaning during freeze-thaw periods. These site-specific measures ensure effective cleaning.

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