Glidden Brush Ups: Lapping - Home Decorating & Painting Advice

Glidden Brush Ups: Lapping

Q: What is Lapping?

A: Appearance of a denser color or increased gloss where wet and dry layers overlap during paint application.  It may look something like this:


Q: How do I prevent it?

A: Follow these suggestions:
  1. 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.
  2. If substrate is very porous, use a primer/sealer to prevent paint from drying too quickly and reducing wet-edge time.
  3. Alkyd interior paint colors generally have superior wet-edge properties.
  4. Another helpful tip is to not paint in direct sunlight.

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