Painting one part urethane

catalina0029 · Sep 28, 2019

What is the down side to painting in high humidity? If it is just that is slows the drying time, I'm good to go. I have forever for it to dry.

I always wonder how they paint anything in Florida if humidity is a problem.

catalina0029 · Sep 28, 2019

I should have mentioned I am painting inside the shop, not outside.

dr sportster · Sep 28, 2019

Try to paint at between 40% and 70% humidity - no higher . Control drying time by use of proper thinner .

Stephen Newell · Sep 28, 2019

When the humidity is high water literally gets in the paint causing it to blush. On a clear finish it looks cloudy. On paint it
screws up the sheen making it dead flat. On days when the humidity is high a dehumidifier is used in the shop as well as slow
solvents. You can use a household dehumidifier as long as you run it and get the humidity down but shut it off when you spray the
paint. Of course you can't use an exhaust fan so you could only spray a little before the fumes in the air would cause you to have
to quit. You would especially have to have an air supplied respirator to spray urethane like that. I know it's a pain is why most
of us wait until the humidity is down to paint.

Painting one part urethane

catalina0029

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catalina0029

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dr sportster

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Stephen Newell

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