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ExtChalking

Chalking

Chalking occurs when ultraviolet rays cause the paint binder to disintegrate. It can happen when interior paints are used for exterior surfaces.

PreventionEdit

Ensure complete sealing of porous surfaces Avoid using inferior quality paints

Do not mix undercoats into finishes

CureEdit

The fine powdery film can be removed by wiping and apply a fresh good quality top coat