Thread: Garage Painting for Dummies

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Originally Posted by buzz4041

Is there a preference for setting up your intake and exhaust ? Should they both be low to the ground or the intake higher and the exhaust low to the floor. I was thinking about my power roof ventilator that I have. Couldn't I duct that into the shop at floor level and put a filter box on it and use it as my exhaust. Then do a filter set up from under the garage door for intake as rspears post suggested. Intake on one end of booth and exhaust on the other end.

Take a lesson from the pros. If you did a search for paint booths you'd notice that whatever style they almost always exhaust low. Old tech (and cheaper) is cross flow where it comes in the back leaves the front. The ultimate is what's called a down draft where the ceiling is the filtered intake air, and the floor is set over a plenum for filtered exhaust. The less "sophisticated" ones will have the intake either along the top or on one end wall. For home the idea is to think about the path of air flow and minimize the chances of picking up "junk" to toss into your fresh paint, along with getting rid of the fumes. If the intake is down at floor level you increase your chances of blowing crap into the paint. Keep the physics in mind too. The amount of intake air potential should be at least as big as the exhaust.