CAUSES: using poor quality roller covers is the cause of excessive splatter. These covers usually pull the paint up from the surface after layering it down. Covers made of low cost fabric do not have the proper resiliency. Using the wrong roller cover for the surface being painted could cause splattering. Overloading the paint roller also causes splattering.
SOLUTIONS: Roller covers of high quality will not pull paint up from the surface just covered. Generally, the smoother the surface, the shorter the roller cover nap should be smooth strokes with the roller will also help avoid excessive splattering.