Quote Originally Posted by desert dog View Post
Roger what do you use for exhaust fan and filter in your booth? You are doing a great job on this build!
Hank
Thanks, Hank! About a year ago I went "all in" on converting the front 15' of the barn into a temporary paint booth. I already had a gable mounted exhaust fan from Tractor Supply that pulls ~1200scfm, shown here.

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I considered moving it down low on the wall but decided that it wasn't worth the extra effort at this point. This is the fan from the inside.

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I decided to use the two garage doors for my air inlet, and I built a pair of 2x4 boxes to hold four 20x20x1 furnace filters each, biased to the outside to increase the exhaust function as much as I could. The two garage doors sit atop these two filter boxes, and I added a piece of 4 mil plastic across the top of the doors to seal the gap caused by the doors being slightly inboard at the top. The filters are cheap furnace filters that run $7.50 for three. I need eight for a total change, but the inboard filters get loaded quicker....

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The inside has a 2x4 stud wall covered in 4 mil plastic, with each side built to fold up to the outside, and the three shed roof extensions pulled up by a pulley system to hold them up and out of the way when the space is not used for painting.
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Once the painting's done the three roof panels lift, and the two wall sections fold flat against the outside barn walls, only taking about 3.5" of space on the side and a bit of overhead space sacrifice for the three shed roof panels. Setting it up to paint means cleaning out this section of the barn, extending the wall and washing down the walls, roof & ceiling with the pressure washer to get all the spider webs blown away. It gives me a 15'x30' open area to spray, which is plenty so far.