Shiny spots or dull spots (also known as “flashing”) on a painted surface; uneven gloss.
- Uneven spread rate.
- Failure to properly prime a porous surface, or surface with varying degrees of porosity.
- Poor application resulting in lapping (see Lapping).
- New substrates should be primed/sealed before applying the top coat to ensure a uniformly porous surface.
- Without the use of a primer or sealer, a second coat of paint will more likely be needed.
- Make sure to apply paint from “wet to dry” to prevent lapping. Often, applying an additional coat will even out sheen irregularities.
Note: Images & information provided by The Rohm & Hass Paint Quality Institute.