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Old 11-15-2013, 07:27 AM
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How many coats of clear on a front urethane bumper cover

I'll be painting my new urethane bumper cover this week end. I've already scrub & washed the release coating off & lightly sanded it with 400 gr. My plane is to spray 1 coat of epoxy primer then a coat of sealer to make it the same color as the primer surfacer that on the body. Then metallic after that. Knowing its going to have to handle some abuse, small rocks, dryed bug splater, hallucinations I didn't brake hard enough for,how many coats of clear does it need? I was thinking 3

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Old 11-15-2013, 07:51 AM
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3 coats is fine, the industry standard is 2 coats of clear, sometimes less is more, meaning that too much clear will cause a deeper chip if your unfortunate enough to get one...also, these are plastic bumpers, they flex, sometimes after the clear has cured, flexing will cause cracking and that cracking is more likely with additional coats of clear, adding a flex agent to your clear may not be a bad idea either...are you using any adhesion promoter for your plastic bumpers?

Ray
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Old 11-15-2013, 08:19 AM
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No, I research that some what an found that more people said it wasn't needed. Most said it doesn't last that long anyway.
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Old 11-29-2013, 03:54 PM
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I would give it 2 coats of epoxy and then wetsand it with 600 and you can shoot your base on that. Make sure you don't sand through to plastic, if you do just reprimer those spots before shooting base.
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Old 11-30-2013, 06:20 PM
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Bumper

Two coats of clear is usually good.
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Old 02-11-2014, 12:06 PM
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What I normally do:
Wet sand with 600.
1 Coat of Bulldog, or similar (adhesion promoter)
Color to coverage
2 Wet coats of clear.
Done.

Less material=less stuff to screw up.
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