Deep matte / Matte: minimal gloss (0–10 GU), hides defects, surface appears “muted”.
Semi-matte: low gloss (10–25 GU), moderately reflects light, retains decorativeness and hides irregularities.
Semi-glossy: medium gloss (35–70 GU), a balance between aesthetics and practicality.
Glossy: high gloss (70–85 GU), emphasizes color and smoothness, reflects light well, requires careful surface preparation.
High-gloss: maximum gloss (>85 GU), mirror effect, maximum decorative properties.
Not standardized: for coatings where gloss level depends on application conditions and cannot or need not be controlled within specified values.
Special decorative effect: metallic effect, pearlescent, texture and other visual solutions.