I have seen a ton of threads on here about home made paint booths and I have tried to study them to come up the best plan suited for me and my budget. There is a ton of back and forth about what is necessary and I am not sure what is opinion or fact but I want to run this by everyone. I live in South East Iowa and I am trying to get a booth going so that I can prime my car this winter so in the spring I can hopefully get it painted in the same booth I am building. I am planning on shooting SPI epoxy and two things have me really worried, temperature and ventilation so I don't go up like a roman candle. My shop is a 20 by 20 which leaves space to be desired but hey, its what I got. My plan is to build a 2x4 structure inside my shop with thick plastic and a zip up door way. The shop is insulate all be it not the greatest. I have a plethora of heaters but the main one in the shop is new to me this year a 35,000 BTU 220 heater. I also have my diesel/kerosene torpedo heater that I was told to stay away from using while painting, and I have a small propane heater I was going to use to help heat the shop but shut off while painting. I know I need to keep the metal 65 or preferably 70 degrees. Do you think a set up like that I came up with would work for this? Will cycling the air through the shop take enough of the fumes out if the the shop is still sealed itself? I don't really have the cash for explosion proof fans so I figured if the fans are on the outside of the booth spraying in it wouldn't be a issue. The lighting will also all be on the outside.