Shop Paint Booth Fan / Ducting

[Jayhawk_Aviator]

I picked up a 4' wide self standing paint booth for a steal. It is missing a fan. I determined that it needs an 18" tubeaxial fan with 3/4 hp motor.

Question is this...if you have the 20" filter wall installed and appropriate fan, will the filters catch the overspray such that you could leave outlet open to the air? I understand it would likely smell of the fumes, but would overspray be a problem? Reason I ask is that it's a small hobby booth that would be infrequently used, and I'd rather not make an 18" hole in my shop or spend the money to do more extensive outlet ducting.

 

[cvairwerks]

Quick answer is no. Our booths at work have double layers and are run to water traps on the roof, ans still have to be cleaned every so often. To note, the roof units are about 60' up from the production floor.

Best suggestion is find some 18" fled duct like this, and set the booth where you can toss the duct out the door as you need to paint.
https://ducting.com/products/air-ventilator-duct-hose-yellow

 

[Aaron_W]

The overspray should not be an issue.

I have a small 2x3 ft DIY paint booth that just uses a cheap furnace filter. The wood plenum behind the filter doesn't have a speck of paint or discoloration after 8 or 9 years of occasional use.

I just use it for spray paint and an airbrush, it could be different if you are talking about automotive paints.


The fumes are an issue that you will want to deal with. Not a good idea to just have them running free in the room with you.

For the exhaust I cut a hole in a piece of 1x10 pine, and placed the board into a partially open window.

 

[isb cornbinder]

I do not know what your paint booth needs are. This is what I did for my small parts painting needs.
I got a free large appliance cardboard box and mounted a dual fan range hood in the lower back of the box. The range hood vents to the out-of-doors. I have a metal grid to set the parts, to be painted, on. The range hood drawas the overspray down and away. When the box gets really messed up, I sent it to recycling and get another appliance box.
I triple filter the overspray with cheap furnace filter media before it enters the range hood. I had a white sock filter on the out-vent to check the vent for particulate. Three hours of spraying small engine parts and the sock was clean.
I use a simple extension to reach and control the fan speed switch from outside the appliance carton
the range-hood was the most expensive part. I did find the RH on Craigslist and the seller was firm on $50.

 

[NUTTSGT]

I painted a tool box in the garage yesterday. Once I was done, I started the wood burner back up. What I forgot about was the filter on the blower motor. It was completely covered with black overspray, no wonder the fan was running so long last night afterwards. It probably wasn't too good on the blower motor.

It's nothing more a regular cheap white pleated filter and it picked up a lot of overspray. Cheap, effective and readily available.

I'd make a panel to fit under the garage door with a spot for the fan.