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05-18-2020, 11:54 PM | #1 |
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Epoxy primer and sealer questions
I’m going to use epoxy primer to cover the old paint on the cab and hood and cowl after sanding the old paint down thoroughly. My doors, fenders, and entire bed is repro EDC metal. After thoroughly scuffing up the EDC panels, should I spray epoxy on these panels?
I’m going to use 2k primer surfacer and block. Painting white top and a copper/orange metallic two stage. Do I need to use a sealer on top of the primer surfacer? |
05-19-2020, 01:05 AM | #2 | |
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Re: Epoxy primer and sealer questions
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05-19-2020, 01:45 PM | #3 |
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Re: Epoxy primer and sealer questions
If your original paint is lacquer or acrylic, the epoxy will melt it and wrinkle. So unless you know for sure that it's not, you should strip it to bare metal.
I sprayed my EDP panels with epoxy. A reduced coat of epoxy (sealer) prior to base/clear for better adhesion. Check the data sheet for your 2K. Some are okay with painting over it, some aren't. But a coat of reduced epoxy as a sealer is cheap insurance and it helps with coverage.
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1964 Chevy C10 - Gen IV 5.3 Restomod http://67-72chevytrucks.com/vboard/s...d.php?t=768632 1968 GMC C15 - Gen III 6.0 Restomod http://67-72chevytrucks.com/vboard/s...d.php?t=772047 1969 Chevy C10 - Restoration http://67-72chevytrucks.com/vboard/s...d.php?t=809184 1978 Chevy Scottsdale K20 1993 Chevy C1500 - 5.3/T56 swapped 2008 Silverado Duramax |
05-19-2020, 06:50 PM | #4 |
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Re: Epoxy primer and sealer questions
Solvent wipe it with lacquer thinner on a rag and if it rubs off it has to go. I remove it because I don’t trust a Taiwan stamping plant to guarantee my work!
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05-20-2020, 10:12 AM | #5 |
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Re: Epoxy primer and sealer questions
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05-20-2020, 10:13 AM | #6 | |
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Re: Epoxy primer and sealer questions
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05-20-2020, 10:18 AM | #7 |
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Re: Epoxy primer and sealer questions
So, here's another question:
Since I'm using new panels, should I scuff and epoxy, then seal? Or just scuff and seal? Seem a bit redundant to spray epoxy on the EDC panels just to allow them to dry and need to be re-scuffed prior to base coat. The difference here would be that I wait to spray any epoxy on the EDC panels until I get them back on the truck and fitted prior to base coat, or I go ahead and spray them now but have to scuff them up again in a few weeks when I shoot the base coat. Thoughts? |
05-20-2020, 11:43 AM | #8 |
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Re: Epoxy primer and sealer questions
you can topcoat epoxy if you do it within the recoat window...no scuffing needed...main thing is you need all your panels the same product and color before you paint
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Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
05-20-2020, 11:54 AM | #9 |
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Re: Epoxy primer and sealer questions
The beauty of epoxy is its recoat window. If your EDP is in good shape and you don't have any breakthroughs to bare steel, there is nothing wrong with scuffing and going straight to sealer. I did that on my front bed panel and tailgate.
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1964 Chevy C10 - Gen IV 5.3 Restomod http://67-72chevytrucks.com/vboard/s...d.php?t=768632 1968 GMC C15 - Gen III 6.0 Restomod http://67-72chevytrucks.com/vboard/s...d.php?t=772047 1969 Chevy C10 - Restoration http://67-72chevytrucks.com/vboard/s...d.php?t=809184 1978 Chevy Scottsdale K20 1993 Chevy C1500 - 5.3/T56 swapped 2008 Silverado Duramax |
05-20-2020, 02:44 PM | #10 |
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Re: Epoxy primer and sealer questions
I would scuff and a apply a wet coat of epoxy, if you’re ready to paint and outside the recoat, scuff, seal with reduced epoxy, and paint
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68 GMC C3500 Longhorn DRW 67 Chevy C10 LWB 90 Mustang Gt 90 Mustang Notchback |
05-20-2020, 08:00 PM | #11 | |
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Re: Epoxy primer and sealer questions
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Anything terribly wrong with that approach? |
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05-20-2020, 09:25 PM | #12 |
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Re: Epoxy primer and sealer questions
Spot prime any bare metal and allow 45 mins between your full coat. I’ve never seen new bedsides that didn’t need minor repair and blocking to look perfect...
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05-21-2020, 07:50 PM | #13 |
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Re: Epoxy primer and sealer questions
Unless you put epoxy primer on bare metal, you are completely wasting your time and money.
Epoxy primer only works on bare steel because it's designed to stop rust creep. If you get a stone chip or scratch anything under the epoxy will not stop the creep... even if epoxy is on top... it needs to be directly applied to the bare steel to do it's sole purpose. Best process is strip the EDP, epoxy prime and carry on. It's not a big deal to red scotch brite the panel when you want to apply high build urethane primer or paint.
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So when is this "Old enough to know better" supposed to kick in? My 1959 GMC build thread http://67-72chevytrucks.com/vboard/s...d.php?t=686989 |
05-21-2020, 08:03 PM | #14 | |
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Re: Epoxy primer and sealer questions
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