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Risks of Excessive Paint Application (Runs, Sags, Warranty Issues)

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Best Airless Spray Tips for Exterior House Painting | ExitFlex Speedy-6 Explained

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What happens here

Using larger tips can also lead to issues like paint runs and sags due to applying too much paint. More importantly, the Technical Data Sheet (TDS) for paint specifies the required mil thickness for optimal performance and warranty coverage. Applying paint too heavily can result in 'crinkling' or 'alligator peeling' over time. Conversely, applying too little paint (which can happen with too small a tip) will also prevent the paint from performing as intended and could void warranty claims if the mil thickness is not met.

Goal: Understand the importance of applying paint at the correct mil thickness according to manufacturer specifications.

Tools and materials

  • Mil Gauge — Testing the wet film thickness of applied paint
  • Paint — The coating material, whose thickness is critical

What they say

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larger tips is the more possibilities of runs and sags. You are getting a lot of paint on there, but one of the other things is is that TDS specifies, you know, how much paint you need to put on there, you know, for the paint and for the paint to perform better. What you could end up getting is more paint the heavier it gets. If it gets too heavy, you can get like crinkling and what we call like alligator peeling and stuff. So, there are issues that come with putting on the paint too heavy. You want to apply it on, you know, per the specifications, you know, for a lot of different reasons. So, if you try to go down, say a smaller tip size, you might not be getting on enough paint. The paint won't perform. If you end up having a warranty claim, they'll come out, test the mill thickness of the paint. It's not the proper mill thickness and they're not going to cover the warranty. When I'm

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