A: Even with high-quality PVDF coating, all coatings experience some degree of gloss reduction under long-term UV exposure as part of natural aging. However, for high-quality high-gloss PVDF products:
The gloss loss rate is minimal (e.g., after 10-year accelerated weathering, gloss retention may still be over 80%).
The reduction is uniform and gradual, not patchy.
Compared to matte finishes, the initial gloss drop might be more visually noticeable on high-gloss surfaces. Choosing reputable brands and AAMA 2605 certified products is crucial.