Lapping
Appearance of a denser color or higher gloss where wet and
dry layers overlap during paint application.
Possible Cause:
Solution:
Maintain a wet edge when painting by applying paint toward
the unpainted area and then back into the just-painted surface.
This technique (brushing or rolling from "wet to dry," rather
than vice versa) will produce a smooth, uniform appearance.
It is also wise to minimise the area being painted and plan
for interruptions at a natural break, such as a window, door
or corner (especially important when applying stain to bare
wood). Alkyd paints generally have superior wet edges properties.
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