Allen, I didn't have a problem with overspray while spraying epoxy or hi-build primer. As far as I can tell, it wasn't an issue with the final paint, either.... I leave the tarps up that I got at HF and just vacuum them off and spray them down with the water hose each time, prior to spraying.
The worst part has been sanding in my garage- that has created a never ending creeping mess that I can't seem to get rid of. I did keep the garage door open while spraying. There just wasn't much overspray with the HVLP setup! I did wet the floor prior to spraying every time, and that may have made a difference, I am not sure.
