A neighbor just dropped off an old range hood with light and fan as he knew I wanted to build a spray booth. I plan on wood on three sides with a plexiglass front half way down sloped out slightly for additional eye protection. It's going in my garage.
My question is venting. I have access to the attic and I can curve the vent to exit through the soffitt under the eaves, BUT I thing that after some useage the under portion on the white soffit may end up with other colors in the general area external vent.. The Condo board may frown on this!! Is there any way to vent internally through a series filters or a box with filters or something a few feet away that would catch all the paint particals etc. and not cause me to breath the fumes etc.
Thanx.
i built my paint booth , i use a dryer vent hose to vent under the garage door, can you do this or thru a window.. I do not have a place where i leave it set all the time so this works for me.
What kind of paint are you using?? i would not use a hood vent if i was using anything but water based paint, to much chance of expolsion with petroleum based paints..
CPbuffmay end up with other colors in the general area external vent..
Not may, but will! I know this for certain. Friend of mine has a spray booth in his garage that another friend uses for weathering. There ends up being a grunge colored deposit on the siding where the vent exits the sidewall. Fortunately, the paint particulate has dried by the time it gets to the vent so what appears to be grunge is actually a deposit of particulate that can be washed off. I'm not sure that your condo board will allow you to erect a ladder to the roof eves for periodic cleaning.
davidmbedardCPbuffA neighbor just dropped off an old range hood with light and fan as he knew I wanted to build a spray booth. I plan on wood on three sides with a plexiglass front half way down sloped out slightly for additional eye protection. It's going in my garage. My question is venting. I have access to the attic and I can curve the vent to exit through the soffitt under the eaves, BUT I thing that after some useage the under portion on the white soffit may end up with other colors in the general area external vent.. The Condo board may frown on this!! Is there any way to vent internally through a series filters or a box with filters or something a few feet away that would catch all the paint particals etc. and not cause me to breath the fumes etc. Thanx. Fan in the airstream+oil based paint=flamethrower. If you are only going to shoot acrylics, then you will be fine. If you choose to shoot Scalecoat, then you are looking at a possible explosion.The issue is the fan....typically it is in the airstream with the motor. The motor will spark as it turns and if the fan is metal, it will spark as well. What you need is a blower-type motor.Anyways...good luck with the build, I just wanted to give you a heads up.David B
CPbuffA neighbor just dropped off an old range hood with light and fan as he knew I wanted to build a spray booth. I plan on wood on three sides with a plexiglass front half way down sloped out slightly for additional eye protection. It's going in my garage. My question is venting. I have access to the attic and I can curve the vent to exit through the soffitt under the eaves, BUT I thing that after some useage the under portion on the white soffit may end up with other colors in the general area external vent.. The Condo board may frown on this!! Is there any way to vent internally through a series filters or a box with filters or something a few feet away that would catch all the paint particals etc. and not cause me to breath the fumes etc. Thanx.
Fan in the airstream+oil based paint=flamethrower. If you are only going to shoot acrylics, then you will be fine. If you choose to shoot Scalecoat, then you are looking at a possible explosion.
The issue is the fan....typically it is in the airstream with the motor. The motor will spark as it turns and if the fan is metal, it will spark as well. What you need is a blower-type motor.
Anyways...good luck with the build, I just wanted to give you a heads up.
David B
Yeah......but at least the flames with be blown outside.
Dennis Blank Jr.
CEO,COO,CFO,CMO,Bossman,Slavedriver,Engineer,Trackforeman,Grunt. Birdsboro & Reading Railroad
I have a North Coast spray booth and just checked how it is set up. To answer your questions, I would NOT vent this internally. However, looking at the way the North Coast booth is set up you could vent it externally, run it through a furnace filter as they do. I've had it about five years and have no paint residue on the white siding outside. The furnace filter does the job. North Coast puts a pretty big fan blower on those so when you are painting you can smell a touch of fumes but not much. I think the furnace filter will work as far as getting the fumes outside and also keeping the outside of your residence paint free.
Lance Mindheim
www.lancemindheim.com
davidmbedard CPbuff A neighbor just dropped off an old range hood with light and fan as he knew I wanted to build a spray booth. I plan on wood on three sides with a plexiglass front half way down sloped out slightly for additional eye protection. It's going in my garage. My question is venting. I have access to the attic and I can curve the vent to exit through the soffitt under the eaves, BUT I thing that after some useage the under portion on the white soffit may end up with other colors in the general area external vent.. The Condo board may frown on this!! Is there any way to vent internally through a series filters or a box with filters or something a few feet away that would catch all the paint particals etc. and not cause me to breath the fumes etc. Thanx. Fan in the airstream+oil based paint=flamethrower. If you are only going to shoot acrylics, then you will be fine. If you choose to shoot Scalecoat, then you are looking at a possible explosion. The issue is the fan....typically it is in the airstream with the motor. The motor will spark as it turns and if the fan is metal, it will spark as well. What you need is a blower-type motor. Anyways...good luck with the build, I just wanted to give you a heads up. David B
CPbuff A neighbor just dropped off an old range hood with light and fan as he knew I wanted to build a spray booth. I plan on wood on three sides with a plexiglass front half way down sloped out slightly for additional eye protection. It's going in my garage. My question is venting. I have access to the attic and I can curve the vent to exit through the soffitt under the eaves, BUT I thing that after some useage the under portion on the white soffit may end up with other colors in the general area external vent.. The Condo board may frown on this!! Is there any way to vent internally through a series filters or a box with filters or something a few feet away that would catch all the paint particals etc. and not cause me to breath the fumes etc. Thanx.
I've heard this theory, but I built a paint booth with a bathroom vent fan and have been spraying Floquil paints for years. I haven't blown up yet. What you need is a brushless or sealed type motor.
Tom is correct, and most, if not all, of the recent crop of fans (bathroom, range hood, etc.) are of the brushless type.
I've been using one from an air hockey game for over thirty years with no explosions while using lacquer-based paints.
I've recently moved my airbrushing operation to the garage, with a short run of metal duct to the outdoors replacing the flexible plastic stuff shown:
The booth is constructed with a base from a cut-up end table, and sides and top made from 1/8" Masonite, pop-riveted together using angle pieces left-over from a suspended ceiling. I made a wooden holder in the top to hold one half of an 11"x20" furnace filter, which locates it immediately below the fan, which is mounted in the furnace-duct adapter atop the booth.
The filters are cheap, and changed whenever they look dirty enough to warrant it. I sealed the new paint room to keep critters out, so also included a screened (and closeable) fresh air intake, which greatly increases the fan's efficiency. At no time, in any location, has it ever created any type of stain on the exterior wall.
By the way, even when using a spray booth, and spraying acrylics, it's wise to wear a two stage respirator.
Wayne
TomDiehlI've heard this theory, but I built a paint booth with a bathroom vent fan and have been spraying Floquil paints for years. I haven't blown up yet. What you need is a brushless or sealed type motor.
I think opinions vary on this fan topic. I found an interesting website on building a paint booth for models in case anyone is interested: http://modelpaint.tripod.com/booth2.htm. Different booth designs and criteria are discussed, including the recommended type of fan and the necessary airflow. One of the interesting things it says about kitchen and bathroom fans is that they are not certified to be explosion proof. In addition, it says something about the fan motor stator windings typically being exposed and that the varnish on these windings is susceptible to deterioration from the solvents used in some paints. It recommends caution if those types of fans are used.
Regards
I agree with Tom, I've been using a bathroom fan with a brushless motor for about 25 years now. I've taken it apart and cleaned it a few times over the years and have never seen any deterioration of the motor windings either. At this point it's irrelevent to me, since I only use acylics.
So, to the OP: check to make sure the motor is brushless.
Jay
C-415 Build: https://imageshack.com/a/tShC/1
Other builds: https://imageshack.com/my/albums
It amazes me the extent of the cheapness some have just to save a few bucks and throw safety right out the widow. Just because you gotten away with doing something for years doesn't mean it's ok to keep doing it. The gun doesn't go off every time you pull the trigger when you play Russian Roulette but when it have the same result as spraying paint in your home made spray booth with the wrongs or unsafe part sin it. If it's important enough for the NFPA to have a code specifying the use of explosion proof fans and sealed motors then maybe I think some should pay attention. Even if you do have an explosion proof fan motor that you cannibalized from a bathroom or what ever fan are you certain it has the correct flow rate? Is it moving enough fumes out of the booth to be effective or is the flow rate too high causing a draft situation that will most certainly mess up your paint job. When I worked in a laboratory environment testing fuels for the military it was S.O.P to check the flow rate of our fume hoods and spray booths once a week. The reason for this was that even though the fans were working and moving the fumes were they moving at the proper rate if not there was the possibility that fumes or vapors could linger and be ignited by another ignition source some thing as simple as a spark coming from static electricity.
I have two spray booths out in my shop, the full sized booth cost me over $70,000 and the smaller one used to paint motorcycle gas tanks and the like cost around $500 only being as i purchased that one used. The reason I had to pay such a crazy amount of money besides safety concerned of course was that they have to be approved NFPA and OSHA rated for my INSURANCE company. God forbid the worse case scenario happens and you do have a solvent based paint job go boom. If your lucky enough to survive what do you think your insurance adjuster is going to say when he finds out you made your spray booth out of an old kitchen exhaust fan, hint it ain't gonna be here's your check.
Hey listen don't get me wrong I look to save money and make things rather then have to buy them especially when I have the knowledge and equipment to do so but, there are times when we all ahve to just bite the bullet and pry open the wallet with the crowbar and spend the money for something that meets approved safety standards
For those interested in a bit of theory - here's a link to a description of design criteria for spraybooths.
http://www.briansmodelcars.com/tutorials/tutorial.asp?TutorialID=23
George V.
georgev For those interested in a bit of theory - here's a link to a description of design criteria for spraybooths. http://www.briansmodelcars.com/tutorials/tutorial.asp?TutorialID=23 George V.
This happens to be the same information by the same person in the link I posted above, http://modelpaint.tripod.com/booth2.htm. Regardless of how one gets there, the information is valuable.