Mapping
Description
Areas of the surface with a differing texture or degree of gloss, surrounded by clearly defined boundary or contour lines.
Cause
Filler or stopper incorrectly mixed, or not properly finished, primed or sealed.
Prevention
Mix filler or stopper correctly, apply and finish carefully and correctly.
Rectification
Rub down the affected area to a sound surface, refill or stop if necessary and prime or seal thoroughly.
