metlmunchr
Member
I need to fix a temporary booth in my home garage (separate 24x32 building not attached to house) so I can paint my old Vette and a shortbed pickup. I really don't want to deal with a thousand square feet of poly sheeting, and would like to have something that's reusable for future projects. Here's what I'm thinking, and would like to get input from you guys as to whether it'll work okay. I've got free access to all sorts of air moving and distribution equipment including a real booth fan, so the money I'd have to spend is minimal.
My plan is to build one wall on the 24ft depth of the shop using 2x4 framing and drywall and bolt the 4 ft wide sections together. Rather than trying to seal everything up and operate at negative pressure, my plan is to use an air handler to blow filtered air into the booth and use some ductwork and diffusers to supply the air to the booth. With positive pressure, any leakage at the joints of the temporary wall shouldn't be a problem. Yeah, famous last words I know.
I can't decide whether I should supply the air thru the ceiling, or if it would be better to drop a couple ducts down in the corners at one end and blow the air out more or less horizontally. Thoughts on that?? Either way, I'd fix a plenum at the opposite end to hold some paint arrestor pads and and duct the exhaust out thru a damper. If necessary, I can add a smaller variable speed fan at the exhaust end to balance the flow.
This might sound complicated for a temporary booth, but I did industrial and hospital HVAC work for 15 years, so the fan and ductwork stuff is sorta second nature. My main questions are whether a positive pressure booth is a workable thing, and if so, whether I should supply the air from above or along the length of the vertical ducts I mentioned up above.
Thanks in advance for your input.
My plan is to build one wall on the 24ft depth of the shop using 2x4 framing and drywall and bolt the 4 ft wide sections together. Rather than trying to seal everything up and operate at negative pressure, my plan is to use an air handler to blow filtered air into the booth and use some ductwork and diffusers to supply the air to the booth. With positive pressure, any leakage at the joints of the temporary wall shouldn't be a problem. Yeah, famous last words I know.
I can't decide whether I should supply the air thru the ceiling, or if it would be better to drop a couple ducts down in the corners at one end and blow the air out more or less horizontally. Thoughts on that?? Either way, I'd fix a plenum at the opposite end to hold some paint arrestor pads and and duct the exhaust out thru a damper. If necessary, I can add a smaller variable speed fan at the exhaust end to balance the flow.
This might sound complicated for a temporary booth, but I did industrial and hospital HVAC work for 15 years, so the fan and ductwork stuff is sorta second nature. My main questions are whether a positive pressure booth is a workable thing, and if so, whether I should supply the air from above or along the length of the vertical ducts I mentioned up above.
Thanks in advance for your input.