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jchrisf

How do you all paint in the humidity

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Florida has been having days of 40% humidity lately and this past week was the first time I have sprayed a clear coat in this low humidity.  It came out great!  The last time I sprayed a clear was several months ago and it was very humid.. it clouded up and ruined my paint.

For those who get great results in high humidity do you have any tips? 

I cannot paint anything to toxic in my garage because the the air return in there and will send it all throughout the house.  Our home owner's association will also not let us have storage buildings/shops in our back yards.  I've been using spray cans outside for the clear but I do have a small paint booth and airbrush.  The automotive clears (duplicolor) I use are just too toxic for the garage.

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Posted (edited)

Isn't your spray booth vented to outdoors ? If the garage is air conditioned and the booth vented properly I don't see the problem. I spray in the kitchen ! Your air return isn't over powering the booth vent is it ?

Edited by Dave G.

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I paint clear outside and I do it in the middle of the day. Florida is more humid then Tennessee, I would your that spray booth in an air condition room or put a strong window unit in the garage.

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1 hour ago, Dave G. said:

Isn't your spray booth vented to outdoors ? If the garage is air conditioned and the booth vented properly I don't see the problem. I spray in the kitchen ! Your air return isn't over powering the booth vent is it ?

I have my booth vented out the garage door.  I don't have windows in my garage and it is made of concrete block.  I have to lower the garage down till it touches the hose and holds it in place.  I have a 30' hose that I can then move about 15' around the corner of the house so it doesn't come back in.  However, the stink still overpowers my paint booth so their are fumes around me and in the garage.

I've been thinking about getting a very small plastic tool shed that I can put up (hide) next to the house that is just big enough for me to paint in (with spray booth).  I'll put a portable A/C in it to cool it and reduce humidity before I start painting.  That is about the only thing I can come up with unless I decant the clear or get a bottle of it and reduce my pressure considerably so the booth can better handle it.

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15 minutes ago, jchrisf said:

I have my booth vented out the garage door.  I don't have windows in my garage and it is made of concrete block.  I have to lower the garage down till it touches the hose and holds it in place.  I have a 30' hose that I can then move about 15' around the corner of the house so it doesn't come back in.  However, the stink still overpowers my paint booth so their are fumes around me and in the garage.

I've been thinking about getting a very small plastic tool shed that I can put up (hide) next to the house that is just big enough for me to paint in (with spray booth).  I'll put a portable A/C in it to cool it and reduce humidity before I start painting.  That is about the only thing I can come up with unless I decant the clear or get a bottle of it and reduce my pressure considerably so the booth can better handle it.

You might consider a Dehumidifier for your garage. The humidity in Kansas at certain times of the year, much like the rest of the mid-west, can get pretty brutal. I have my booth setup in the basement, known to be very damp in this part of the world. The part of the basement is opens to the back yard and is where all the mowers and yard tools are stored as well as the sump pump. I also have a dehumidifier in that area and even in the middle of the summer I have zero problems with paint that isn't my own fault.  

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I usually just wait until it’s a sunny day with less humidity. Duplicolor paints are super sensitive to humidity. Tamiyas can handle it a little better. You can usually spray outside and bring the body inside to cure without it fogging if you do it quick enough. But then you risk debris hitting the model.

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1 hour ago, jchrisf said:

I have my booth vented out the garage door.  I don't have windows in my garage and it is made of concrete block.  I have to lower the garage down till it touches the hose and holds it in place.  I have a 30' hose that I can then move about 15' around the corner of the house so it doesn't come back in.  However, the stink still overpowers my paint booth so their are fumes around me and in the garage.

I've been thinking about getting a very small plastic tool shed that I can put up (hide) next to the house that is just big enough for me to paint in (with spray booth).  I'll put a portable A/C in it to cool it and reduce humidity before I start painting.  That is about the only thing I can come up with unless I decant the clear or get a bottle of it and reduce my pressure considerably so the booth can better handle it.

It sounds like your extractor fan is not strong enough to handle both the spray bombs and then that 30' extension. You could cut that 30' piece and fit a strong fan in there that would boost the extraction performance. Harbor Freight might have something.

 

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