Resin tile weathering analysis: wind and sun really will not fade?
Roofing materials are exposed to the sun for long periods of time, and fading and chalking are common problems. ThenResin tiles weather resistanceHow exactly? Can it really keep the color from fading for years? This article gives an objective answer from material science and real measurement data.
First, ultraviolet rays are the culprits of fading
The energy of UV light is sufficient to break the chemical bonds in polymeric materials, triggering oxidative degradation. Materials containing unsaturated chemical bonds (e.g. ABS) will rapidly fade, whiten, crack or even chalk.
Second, ASA how to solve the problem of ultraviolet aging
The surface layer of the resin tile is made of ASA, a molecule that does not contain unsaturated double bonds and is therefore resistant to degradation caused by ultraviolet light. This design allows ASA to remain stable in complex environments such as high temperatures, humidity and acid rain.
III. Measured data
Conducted at the National Testing Center for Chemical Building Materials12000Hourly manual aging testThe color difference value ΔE of high quality resin tile is only 2.23, which is far below the upper limit allowed by the national standard. As a reference:
- ΔE ≤ 3: barely noticeable change to the naked eye
- ΔE ≤ 5: slight change, requires careful comparison to be noticed
Using imported ASA raw materials, thickness ≥ 0.15mm of high-quality resin tiles, under normal use conditions can be guaranteed for 10 years ΔE ≤ 5, the actual service life of up to 25-35 years.
Inferior products (ASA layer <0.1mm or with ABS impersonation) installed one or two years after the white color, three or five years on the surface cracking, waterproof function failure.
Fourth, weatherability is more than just about color
True weatherability also includes no significant deterioration of mechanical properties, no embrittlement, no delamination, and ASA materials excel in this regard as well.
V. Environmental factors affecting weatherability
In high altitude areas with strong sunshine or acid rain prone areas, the surface layer will age slightly faster than in ordinary areas. Industrial dust, acidic gases will also cause some impact. But these differences in the controllable range, choose the regular products and according to the norms of construction, you can still get a satisfactory service life.
VI. Suggestions for purchase
To ensure the weather resistance of the resin tiles, be sure:
- Confirmation of ASA layer thickness ≥0.15mm
- Require artificial aging test report
- Don't be greedy for low prices, beware of the “ultra-low price” traps
summarize: High-quality resin tiles can indeed be exposed to the elements for many years without significant color fading. Those cases of “fading in three years” are almost always inferior products. Recognize the ASA thickness and brand, you can buy a really good weatherproof tile.
