are you using a 20" box fan by chance? if so, i don't believe it will pull enough air... pakrat is right about only having an exhaust, but having some way for air to get in, like a partially opened man door. a better fan would be a grain bin fan.... but that's a lot more work. and wet the floor and walls- well everything really. A buddy of mine is an EXCELLENT painter, and you'd never think that kind of work would come out of his garage. He has a big exhaust fan, wets down everything.... i mean everything- if it's in the area, it's going to get a little moist. and keep other people out to keep the dust down
