A non-uniform colour may appear when paint is applied on walls with a roller, but brushed in the corners. The brushed areas usually appear darker and resemble a picture frame.
- Usually a hiding or coverage effect. Brushing generally results in lower spreading rates than rolling. Non-uniform colour or glossiness may be caused by the variation in dry paint film thickness and method of spreading.
- Use of different batches of colour.
SolutionFollow Tikkurila's recommendations on spread rate. After making an edge with a brush, apply using a roller as close to the edge as possible and, if necessary, repaint the edges after the paint has dried.
Divide the surface into smaller areas to maintain a wet edge. When purchasing different paint, mix them together well to avoid any non-uniform finish.