Solution: Use the proper roller cover; avoid too long a nap for the paint and the substrate. Use a quality roller to ensure adequate film thickness and uniformity. High quality paints tend to roll on more evenly due to their higher solids content and leveling properties. Pre-dampen roller covers used with latex paint; shake out excess water. 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 minimize spatter; then, without lifting the roller from the surface, fill in the zigzag pattern with even, parallel strokes.

This information is brought to you courtesy of the Paint Quality Institute.

-- Tips courtesy of HomeAdvisor.com