Coating

Chalking

Matte, chalky coating on the paint surface - degradation of colorless resins under the influence of UV and poor protection of the coating.

Long-term exposure to UV radiation on resins in the clear layer - gradual disintegration of the coating structure
Use of varnish without a UV filter or with insufficient sun protection
Wrong selection of hardener - too little or too much causes incomplete cross-linking and poorer UV resistance
Wrong diluent proportions - diluted varnish has a lower resin density and degrades faster
Washing the car with aggressive cleaning agents that destroy the protective layer
No regular waxing - wax creates an additional barrier against UV and slows down chalking
Parking only in the sun without any protection for many years

Use clear varnishes with high resistance to UV radiation
Observe the mixing ratio of the hardener and thinner from the technical data sheet
Advise the owner to wax regularly - at least twice a year
Avoid aggressive cleaning agents and coarse polishing pastes
Use only cleaning agents intended for car paints

Light chalking - polish the surface with fine polishing paste, then secure with wax
Protective wax temporarily restores the appearance but is not a permanent solution
Deep chalking - sand off the degraded clearcoat and apply a new one with appropriate UV protection
After repair, recommend that the owner regularly protect the paint every 6 months