Roller marks or stipple is the unintentional textured pattern that’s left in the paint by the roller.

Possible Cause

This can occur when:

  • The incorrect roller cover is used
  • Lower quality paints and/or rollers are used
  • The incorrect rolling technique is applied

 

Solution

Use the prescribed roller cover and avoid too long a nap for the paint and the substrate. Use quality rollers to ensure the recommended film thickness and uniformity. High quality paints also tend to roll on more evenly due to their higher solids content and levelling properties. Another great tip is to use water to pre-dampen roller covers to be used with water-based paint. Be sure to shake out excess water before painting and don't let paint build up at roller ends. Begin rolling at a corner near the ceiling and work down the wall in three-foot square sections. Spread the paint in a zigzag 'M' or 'W' pattern, beginning with an upward stroke to minimise paint spatter. Then, without lifting the roller from the surface, fill in the zigzag pattern with even, parallel strokes.


More problem solving advice

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Have you noticed small droplets appearing on your fresh coat of acrylic paint? This is known as 'surfactant leaching'. Don't panic - it's a normal part of the curing process.  For each problem you’ll find a guide to identifying it, its causes and solutions.

Yellowing

Yellowing is the development of a yellow cast in aging solvent-based enamels. It’s most noticeable in the dried films of white paints or clear varnishes.  For each problem you’ll find a guide to identifying it, its causes and solutions.