May 8, 2017 - Explore Bonnie Harris's board "Homemade Spray Booth" on Pinterest. See more ideas about spray booth, paint booth, diy paint booth. Like I said, my goal was to minimize the paint dust and overspray. I checked the cabinets for paint dust with the new set up, and they passed the test. I know this is not a pretty booth, but it got the job done. I added another box fan to the outside of the spray booth to help bring the fresh air in (via the open garage door). I put my drying racks behind the spray booth, out of the way of the air flow. Now it was time to test my portable spray paint booth. I put my drop cloths on the floor and made sure there was enough outside the booth to ensure overspray wouldn’t get on the floor. Then used clothes pins to seal the corners of the shower curtains. https://m.roadkillcustoms.com/build-diy-paint-booth-in-your-garage . These instructions will be for a booth that is 8 feet tall, 15 feet long and 10 feet wide, big enough for use in painting a car.