Picture framing occurs when a wall is painted with a roller, but is brushed at the edges and 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 from brushing usually occurs because brushes result in a lower spread rate than rollers, which produces a thicker layer of paint. It can also occur if colourant is added to non-tintable paint, or if the wrong type or level of colourant is used.
Picture framing can be minimised by ensuring adequate coverage is achieved across the entire wall and by maintaining a wet edge when rolling over brushed areas.
Work in smaller sections of the room to maintain a 'wet edge' and ensure spread rates between brushes and rollers and similar. With tinted paints, be sure the correct colourant-base combinations are used. Factory colours, as well as in-store tints, should be thoroughly shaken at time of sale, and the paint should be stirred well prior to use.
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