This question has come up all too often at board meetings. The "old-fashioned" belief that rolling yields a better paint job than spraying is just a fallacy.
The combination of both is the proper way to apply UCI paint on fresh or painted stucco. The following will explain the process of spraying and back rolling and why it is the preferred method for paint applications, especially on stucco surfaces.
When most people think of "spraying," they visualize utilizing an air pressure sprayer with a pressure pot and air compressor, like the way a car is painted. This "old-fashioned" style of spraying may be okay for painting cars (in an enclosed spray booth environment) but has no similarities to the type of equipment or methods used when repainting the exterior of buildings.
Today's modern spray equipment utilizes an "airless" high-pressure system. The UCI paint is pumped directly from the paint bucket at high pressure (3,200 + PSI) onto the substrate that is to be painted. The high pressure and direct force of the paint minimizes any overspray and