Home brew paint booth

[dhutton]

I just finished building this paint booth in my shop and I thought it was worth posting in case someone else could use the ideas.

I've been wanting a paint booth in my shop and was running short of storage space so I built the booth so that I could use the top for storage. It’s 14x22 feet and it's set it up to be a down draft style booth. There is a two speed fan on the top that pushes air into a 30”x16’ plenum that is lined with two layers of pleated furnace filters. The plenum opens down into the booth. The exhaust goes out through filters in the door. I originally planned a more elaborate exhaust system but I ran of of steam and went with the filters in the door.

I painted the jams etc on my car this weekend and it seemed to work well. Overspray was very minimal. I even sprayed for several minutes before I realized I had forgotten to put my respirator on. The exhaust filters did their job and there was no evidence of overspray in my shop. I have a large fan that pushed air through the shop to keep the air moving.

By going downdraft I avoided the need for an explosion proof fan and because it is a positive pressure booth there are no issues with dirt getting sucked in through any gaps or leaks. The fan is a 30 inch whole house attic fan that I picked up at Lowes. There is a total of 17 four foot light fixtures. The walls are lined with tile board.

Don

[toxicz28]

Very nice!
Just a suggestion, not sure where the back wall is in relation to your shop, but maybe relocate the filters to it and another plenum, so you have no overspray in the shop.

[dhutton]

The filters in the door seemed to catch the overspray. I don't want to cut holes in the shop walls. I'm only going paint at most one car per year and some parts so I don't think it will be much of a problem. I can change the exhaust filters every paint job if necessary. The original plan was a more complex ducted exhaust but I decided to try this simple approach first.

Thanks,
Don

[grumpy44]

simple is good, Works for me. And I paint for a living, I've painted in a lot worse. Well, outside is about as worse as it gets, lol

[junkman]

Paint both looks great, looks very bright. I set my garage up for something like that when I built it Just have never got around to actually building the booth. Mine usually consist of about $20 worth of walmart dropcloths wired up to the rafters encapsulating the car, then the "ahh it'll sand out method"

[69keith]

I built a cross draft booth very similar to yours. I used Two 16" attic fans and used ceiling fan variable speed controllers to adjust the speed of the fans.