Feel silly posting this as must be a post about it, but can't find one searching. I have always done my own painting, used a sprayer for exterior but always used a roller for interior. Starting to get bids for a major renovation of an old home, and the painters gave me a a bid for spraying the inside. Guess that is how it's done, it makes sense but just want to be sure that is equivalent to rolling. They are going to spray and backroll ceilings. Any advise on this and how costs should compare for hand painting vs. spraying interior would be helpful. Also current costs per square foot.