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Weathering Tests for Coatings: Record the Exposure Cycle
Total test hours do not fully describe an accelerated-weathering exposure. Light, moisture and temperature stages belong to the method.
Updated · NANOLAB Knowledge
Practical approach
Obtain the complete cycle and specimen conditions from the laboratory. Compare results only with a clear understanding of differences in exposure.
Two reports listing the same hours may use substantially different cycles and therefore should not be treated as equivalent challenges.
Decision limits
Do not convert hours to outdoor years using a universal multiplier. Any service-life inference needs relevant validated evidence.
Related guidance
- Ceramic Coating Chemical Tests: Spot Exposure, Wiping and Immersion
- A Coating Project Review After the First Maintenance Cycle
- Ceramic Coating Samples: Separate Screening Tests from Qualification
- Coating Weathering Panels: Identify the Exposed Face and Orientation
Method reference: Q-Lab: introduction to weathering. References describe their stated methods or products; they do not certify NANOLAB products or establish compatibility with an unlisted surface.
Ask NANOLAB about the exact product and intended use. Use the current product documentation for formulation-specific instructions.
Continue reading
Ceramic Coating Chemical Tests: Spot Exposure, Wiping and Immersion
Distinguish spot, wipe and immersion tests when reading ceramic coating chemical-resistance claims, with attention to concentration, time and failure criteria.
A Coating Project Review After the First Maintenance Cycle
Compare actual care effort and observations with the original project assumptions.
Ceramic Coating Samples: Separate Screening Tests from Qualification
Screening helps decide what deserves further evaluation. Qualification determines whether defined requirements have been met. A promising screening result is not automatically a release approval.