An effect of non-uniform color that appear when a wall is painted with a roller, but is brushed at the corners. The brushed areas generally appear darker, resembling the " frame " of a " picture ". Also, sprayed areas may be darker than neighboring sections that are brushed or rolled. Picture framing can also refer to sheen effects.
Possible Cause :
- Usually a hidding (coverage) effect. Brushing will generally result in lower spread rates than rolling, producing a thicker film and more hiding.
- Adding colorant to a non-tintable paint or using the wrong type or level of colorant.
Solution :
- Make sure that spread rates with brushes and rollers are similiar.
- Don't cut in the entire room before roller coating.
- Work in smaller sections of the room to maintain a " wet edge. "
- With tinted paint, be sure the correct colorant-base combinations are used.
- Factory colors, as well as in-store tints, should be thoroughly shaken at time of sale.
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