Is An Exhaust Fan a Requirement in a Portable HVLP Booth with Water Finishes?

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Forum topic by gerrym526 posted 12-10-2009 01:49 AM 1118 views 0 times favorited 1 reply Add to Favorites Watch
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266 posts in 3226 days

12-10-2009 01:49 AM

Topic tags/keywords: finishing spray gun

Will be starting into spraying with an HVLP unit I recently purchased. In reviewing articles and videos on HVLP, the portable spray booth designs (usually big pieces of cardboard with duct tape) all had a cheap window box fan at the rear of the booth, covered with an inexpensive fiberglass furnace filter.
Here’s my issue-do I need the fan? I’ll be spraying only water based finishes and using a respirator with organic filters. I’ve rigged up a knock down setup of heavy shower curtains on wood closet rods to cover 3 sides of the spraying area. I’ll be using a heavy canvas drop cloth on the floor to keep finishes off the tile.
I can’t use a fan in my small basement shop without risking having any overspray it draws out end up on my stationary tools. Was told by the manufacturer of the HVLP unit (Apollo), that overspray with this turbine unit is minimal and shouldn’t be an issue like it is with a high pressure gun.
Am I OK without the fan, or do I need to wait until summer to use the HVLP with a fan-based spray booth in my garage.
It’s cold and snowy here in Chicago, and will be until April!
Thanks for the help.

-- Gerry

1 reply so far

View Mark Shymanski's profile

Mark Shymanski

5300 posts in 3130 days

#1 posted 08-03-2010 10:56 PM

From what I’ve read (not actually used one myself) the overspray is less of a problem, not sure why though. I think Marc Spagnolo wrote about his HVLP a while ago, and I have read elsewhere where people describe much like what you plan on using for containing the overspray.

-- "Checking for square? What madness is this! The cabinet is square because I will it to be so!" Jeremy Greiner LJ Topic#20953 2011 Feb 2

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