Forum Title: And suddenly, overspray!
So two separate times this summer I’m striping and all of a sudden it’s putting down overspray. I grab a new tip (319) , change it out and it still oversprays! It’s got me thinking it’s paint temperature induced. Any thoughts or solutions?
Category: Paving Post By: LEONA GROSS (Bloomington, IL), 12/27/2019

Originally posted by JustLikeArock View Post So two separate times this summer I’m striping and all of a sudden it’s putting down overspray. I grab a new tip (319) , change it out and it still oversprays! It’s got me thinking it’s paint temperature induced. Any thoughts or solutions? What kind of paint are you using? I use mainly acetone paint. the temp is a major factor. also the temp of the surface you are spraying on is a huge factor. I use a white canvas drop cloth to put over my paint while its on the truck to keep the sun from heating it up as much. It helps more than you would think. Also on those really hot days, i make sure I'm using a brand new solvent resistant tip gasket in my tip guard. that is pretty much all you can do. the overspray should be a dry dust, and just brushes off. Its basically a side effect of having good paint that dries so fast. Also try dropping to a 317 tip, on new layouts it won't work, but on a restripe where you are just brightening the color a little less volume isn't much of a big deal. the smaller tip tends to produce less of the overspray dust. Just so you know you will never get rid of the overspray dust entirely with acetone paint. Its just how it is on those hot days, I have used 6 different formulations from 3 different manufacturers, and every formulation has the over spray dust when its hot.

- A. O. Smith (New York City, NY), 01/31/2020

I think it’s heat which reduces viscosity, and I too agree that if you have pails in an open truck bed, cover it with a canvas tarp.

- ARLENE STEELE (Tamarac, FL), 01/31/2020

Originally posted by JustLikeArock View Post So two separate times this summer I’m striping and all of a sudden it’s putting down overspray. I grab a new tip (319) , change it out and it still oversprays! It’s got me thinking it’s paint temperature induced. Any thoughts or solutions? Replace the rubber gasket and metal piece in your tip guard. I have found once they get pretty worn out they turn the line fuzzy. Your gun can be clogged too. Take off the tip guard and look at the spray from the gun. If it is only coming out on one side you are clogged. Shut down the machine and dump the pressure from the gun. 5/8 wrench take off that nut. Dont loose the copper ring. Soak it, blow out with air and reinstall.

- CHRISTOPHER MARTINEZ (Tinley Park, IL), 01/31/2020

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