How much more paint is used when spraying?
Does a paint sprayer use more paint than a roller? The short answer is “yes.” Paint sprayers use roughly 33% more paint on average than a roller. However, most professionals and dedicated DIYers agree that, since paint sprayers can save you so much time, using a little extra paint is worth it.
Do paint sprayers use more paint than brushing?
With an airless paint sprayer, you will use 40% more paint than if you brushed or rolled. That means 40% of the paint that you're spraying ends up somewhere else besides your paint surface. Poor spray painting techniques can increase this ratio to 50/50.