This refers to areas of uneven gloss – shiny or dull spots – that may occur on a freshly painted surface.
- An uneven spread rate
- Failure to properly prime a porous surface, or a surface with varying degrees of porosity
- Poor application resulting in lapping
New substrates should be primed or sealed before applying a topcoat, as this will ensure a uniformly porous surface.
If a primer or sealer is not used, you may need to apply a second coat of paint. This additional coat will frequently even out sheen irregularities. Take care to apply the paint from wet to dry to prevent lapping.