Why is there a powdery substance on the paint film which rubs off on my hand

Powderly layer on top of the paint film, which is disintegration of paint binder due weathering / UV light.

What are the possible causes?

• Decomposition of binding agent at the paint surface resulting the release of pigments.
• Poor repair work on the previously chalked paint surface.
• Wrong selection of paint system.
• Paint may diluted too much.

How can I fix the problem?

• Remove all powdery deposits by wiping, scrubbing, high pressure washing or abrasion. Wipe loose material off and apply a chalk resistant topcoat.
• Always keep to the recommended film thickness and number of coats.