Wash bay/ Spray booth lighting

[Bradbilt]

I am trying to prep for my 40x60 building I plan on putting up this summer/fall.

I am going to have one bay sectioned off from the rest. I will be 15x40x16. Insulated. White tin. Air intake filters, exhaust filters, 24" exhaust fan.

I am trying to decide what lighting and how many.

I want it VERY well lit. I need waterproof and vapor proof
I was thinking of these https://www.superbrightleds.com/mor...ubes--industrial-led-light--4-long/3687/7822/

I was thinking of putting 8 on each 40' wall vertically spaced out about every 6'. 2-3' from the floor

and then about 5 on each wall about horizontally at about 12' up.

SO in total 26 of those lights.

Am I an idiot?

Then there is the remainder of the shop(40x45)........

 

[cybrdyke]

Spray painting? or water spraying?
CD

 

[Bradbilt]

Spray, as in painting trucks

 

[Nivekdodge]

Can you mount the lights behind glass ? ie make a room inside the garage ?

 

[cybrdyke]

Spray paint booths are considered hazardous location.
If there will be a permit pulled or an inspector involved, or if you're running a business, you'll need special lighting equipment.
CD

 

[alfredeneuman]

Not ALL spray booths are classified as hazardous areas.
Those that use flammable paints are. Non flammable (latex based) paints are not.

 

[cybrdyke]

Not ALL spray booths are classified as hazardous areas.
Those that use flammable paints are. Non flammable (latex based) paints are not.

OK. I'll buy that.
I dont know much about paint. Is there a latex based paint that you can use to paint trucks?
CD

 

[alfredeneuman]

Yes
It's more environmentally friendly
https://www.eastwood.com/water-based-paint-water-based-auto-automotive-car-paint

 

[Affinity Fab]

Yes
It's more environmentally friendly
https://www.eastwood.com/water-based-paint-water-based-auto-automotive-car-paint

That is not latex, that is waterbourne base coat. It is also just the basecoat (color) the primer & clear coat used with it is still solvent based.

Every spray booth I've ever worked with had sealed light fixtures that have a glass panel in a frame that has a gasket to seal it against the housing and yes you could powerwash them.
Something like this...
https://www.zoro.com/global-finishi...hR3ia9xQ8rNzInef-LXNPLfb4DmlKb3gaAsWjEALw_wcB

 

[alfredeneuman]

Granted it's not latex, but if it's used exclusively for the base coat & the primer and clear coat
are done in separate booths (as in the factory) then.......

 

[Bert_]

I wouldn't assume only one specific kind of paint. Don't expect this to be cheap...

 

[Platonic Solid]

Interesting. Though according to the article water based clear isn't there yet.

I see lots of manufacturers and specifiers using the term "Vapor Proof" and "Vapor Tight" on non-hazardous location rated fixtures. I've never seen such a UL or IP category, which makes me think this is just a baseless sales gimmick as there is no test criteria. I'm only familiar with the UL844 hazardous location rating which covers gasses and vapors. The Superbrightled fixture linked above has no such listing. Superbrightled has one fixture in their hazardous location file and the VTLF isn't it.

I second the mounting the fixture behind glass method as that way you have a fighting chance of cleaning off over-spray. That's how the disassembled paint booth I have is made.

 

[Norcal]

The few booths I have been involved with had standard fixtures behind wired glass with one having a couple fixtures rated for the location by UL by the entry door which also has a limit switch to shut off the compressed air supply if it was open, & a 1.1 million BTU input gas heater. The makeup & exhaust fans were designed so standard motors could be used rather then expensive motors UL listed for hazardous locations.

"Vapor tight" l i g h t ing fixtures are not "explosion proof" they are used in wet locations or for example, walk in refrigerators, listed fixtures for hazardous locations will have a label affixed to them stating the group,& division, they are listed for. The price they charge is crazy high enough that it could cause soiled pants when reading the quote, making the wired glass quite reasonable in comparison.

 

[alfredeneuman]

The original post I responded was that "Spray paint booths are considered hazardous location". (automotive)

I made the mistake by calling the paint "latex" rather than "waterbased"

 

[Milton Shaw]

For latex you could just use a roller and brush or just a pine top no need to spray. It would not improve the finish texture to spray a latex. Waterbased is a different kind of paint entirely. I have seem some painted with latex and it makes it into a rat rod or worse.

 

[Nivekdodge]

My turn to toss numbers around. Solventborne base coat has a VOC rating of 7.0+. Using water as the transfer method takes it down to 1-2. Some waterborne clears exist but in the states they are not yet mandated.
If the overspray is kept from the light by sealed glass, there should be no problem. If you're talking inspections, worry about the fan.

 

[Elsinore13]

What is code there for exhaust stack height and fire suppression systems in the booth and exhaust?

 

[Platonic Solid]

"Vapor tight" lighting fixtures are not "explosion proof" they are used in wet locations or for example, walk in refrigerators...

Absent an official definition and test criteria of "Vapor Tight" by an AHJ, NRTL or governing body such as UL, NEMA, NEC, ... the term is meaningless.

 

[sberry]

What lights

 

[Bradbilt]

Finally fixed my email notifications.


Anyway it will be a spray booth for painting vehicles.
Just a "hobby" so no need for exhaust stack, filters, etc.

I am just trying to make it as pleasant as I can to paint in, without spending a fortune. I have been painting in a 2 car garage for the past 12 years with (6) 8' florescent fights and 2 box fans. I am trying to better my setup

 

[LS6 Tommy]

Not ALL spray booths are classified as hazardous areas.
Those that use flammable paints are. Non flammable (latex based) paints are not.

Not so. Any airborne particulates, mists or other materials can be very combustible or explosive. They do not have to be flammable.

Tommy

 

[RNN14Wolfe]

LOL, I built my own spray booth and kept it simple. I Just framed it in, and flush mounted twin LED fixtures on the walls and ceiling, then finished off the inside with foil backed insulation panels to reflect as much light as possible. I then covered the square openings for the lights with lexan. Have a huge exhaust fan with the flaps that open when on, in the front wall (and I made a place to slide a furnace filter into so no paint solids end up outside), and my intake in the door is nothing more than 2 square holes I cut and then used some angle iron as a frame to hold 2 more HEPA furnace filters (24x24).

I and several other people have turned out paint jobs in this "booth" that you would have to see to believe. It works, and it works well.

Legality is a grey area, but it's only for personal use and I don't live in an area with HOA's or covenants, so....

 

[Stuart in MN]

Legality isn't really the issue, it's safety.

 

[RNN14Wolfe]

Legality isn't really the issue, it's safety.

With LED lighting the risk is negligible, especially if you have adequate ventilation/crossflow.

 

[alfredeneuman]

Not so. Any airborne particulates, mists or other materials can be very combustible or explosive. They do not have to be flammable.
Tommy

What about water mist?