Official SGS Test Report: Flexible Stone Demonstrates Excellent Dirt Pickup Resistance

Official SGS Test Report: Flexible Stone Demonstrates Excellent Dirt Pickup Resistance

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Read the SGS dirt pickup resistance report for our Flexible Stone. After 5 rigorous contamination and washing cycles, the reflection coefficient only decreased by 12%, proving its self-cleaning capability for urban Facade Retrofit.

1. Report Overview

This article presents the official SGS test report (Report No. GZIN2510001940CM02-1_EN) evaluating the dirt pickup resistance and stain removal properties of our Flexible Stone. Conducted by SGS-CSTC Standards Technical Services Co., Ltd., the test simulates years of urban air pollution and rainfall to assess the material’s self-cleaning ability. The results confirm that our material maintains excellent surface cleanliness, making it a low-maintenance and highly aesthetic choice for Flexible Stone Engineering and urban Facade Retrofit projects.

2. Data Analysis: The Science of Self-Cleaning

According to the test results, after 5 rigorous cycles of contamination and high-pressure washing, the decrease rate of the reflection coefficient of the Flexible Stone was only 12%.

Engineering Value for Facade Retrofit:

• Lotus Effect (Self-Cleaning): A 12% reduction means dust, soot, and dirt cannot easily adhere to the surface. When it rains, the water simply washes the surface clean, preventing the unsightly “streaking” or darkening often seen on traditional exterior walls.
• Reduced Maintenance Costs: In Facade Retrofit projects located in busy urban areas, buildings are constantly exposed to vehicle exhaust and dust. The superior dirt resistance of our material significantly reduces the frequency and cost of building facade cleaning, ensuring the building looks brand new for years.

3. Test Methodology

The SGS evaluation was conducted strictly under the Chinese national standard GB/T 9780-2013 (Section 5.4, Painting – Method A).

• Test Standard: GB/T 9780-2013 Section 5.4
• Pollution Source: Standard test ash mixed with water (1:1 ratio).
• Test Cycle:
  1. Brush the pollution suspension onto the specimen (0.7g ± 0.1g).
  2. Let it stand for 2 hours.
  3. Rinse with 15L of water for 1 minute.
  4. Let it stand in standard conditions for 22 hours.
• Total Cycles: 5 complete cycles.
• Test Result: 12% decrease in reflection coefficient (Pass).

Note: The test report explicitly states that it is intended for internal quality control and R&D. For official bidding or compliance verification, the specific SGS report number (GZIN2510001940CM02-1_EN) should be referenced.

4. FAQ

Q1: What does “Dirt Pickup Resistance” mean for exterior cladding?
A: It measures how easily a material gets dirty and how easily it can be cleaned. A lower reflection coefficient decrease (like our 12%) means the material’s surface is smooth and repels dirt, much like a lotus leaf.

Q2: Why is the 12% reflection decrease a good result?
A: It proves that even after being heavily soiled with standard test ash and washed 5 times, the Flexible Stone retains 88% of its original brightness. This indicates that rain alone can wash away most surface dirt, reducing the need for manual cleaning.

Q3: How does this benefit a Facade Retrofit project in a polluted city?
A: Urban buildings are constantly exposed to dust, smoke, and vehicle exhaust. Traditional materials often become permanently stained or darkened. Our Flexible Stone resists this dirt accumulation, ensuring the renovated building maintains a clean, modern appearance with minimal maintenance.

Q4: Does the test simulate real rain?
A: Yes. The 15L water rinse in the test simulates heavy rainfall washing over the facade. Combined with the 5-cycle repetition, it mimics years of exposure to urban pollution and subsequent weather events.