Paint With Confidence
Exterior Common Issues & Solutions
Text & image courtesy of the Rohm & Haas Paint Quality Institute
Picture Framing
An effect of non-uniform color or sheen that can 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.
Possible Cause
- Often a hiding (coverage) effect. Brushing will generally result in lower spread rates than rolling, producing a thicker film and more hiding, and sometimes higher sheen.
- Adding colorant to a non-tintable paint or using the wrong type or level of colorant can result in different color development between brushing/rolling/spraying.
Solution
Make sure that spread rates with brushes and rollers are similar. Don”t cut in the entire room before roller coating. Work in smaller sections of the room to maintain a “wet edge.” With tinted paints, 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.
