What is Lapping?
Appearance of a denser color or increased gloss where wet and dry layers overlap during paint application. It may look something like this:
How do I prevent it?Follow these suggestions:
- Using a top-quality latex paint makes it easier to avoid lapping problems because its higher solids (pigments and binder) content makes lapped areas less noticeable.
- If substrate is very porous, use a primer/sealer to prevent paint from drying too quickly and reducing wet-edge time.
- Alkyd interior paint colors generally have superior wet-edge properties.
- Another helpful tip is to not paint in direct sunlight.