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Old 07-04-2013, 10:40 AM
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do i need sealer

do i need to spray sealer after on after i finish 2 coats of 2k primer? my finish coat will be single stage black urethane, thanks.

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Old 07-04-2013, 11:21 AM
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As a precaution, I would seal it. However a 2K urethane primer does not need to be seal coated unless there are any sand through areas.

Kelly
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Old 07-04-2013, 01:07 PM
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As much as Kelly's advice is sound, it all boils down to substrate. If your substrate is solid, consistent and compatable to your top coat...ie fully cured single stage urethane, prepped with proper grit of sand paper (600 wet, 400 dry for base coat) sealer is not required.

Look at it this way, if a body shop is doing a spot repair on a fender and have primed the repaired damaged area with a quality 2K primer, do they seal the fender? NO...the sealer would cover the color in the blend area not allowing for a blend of color. Sealer is meant to give the vehicle being painted a uniform substrate, if you have a uniform substrate....why seal it? It's just another product that costs money, keeps you in the paint booth longer and gives you more opportunity to get dirt or whatever other imperfections that might occur in your new paint job.

Hope this helps.

Ray
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Old 07-04-2013, 03:16 PM
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thank you for the info.
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Old 07-04-2013, 03:39 PM
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Not a problem, always happy to help, if you have any further questions, feel free to ask.

Best Regards
Ray
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Old 07-04-2013, 07:13 PM
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Quote:
Originally Posted by 69 widetrack View Post
As much as Kelly's advice is sound, it all boils down to substrate. If your substrate is solid, consistent and compatable to your top coat...ie fully cured single stage urethane, prepped with proper grit of sand paper (600 wet, 400 dry for base coat) sealer is not required.

Look at it this way, if a body shop is doing a spot repair on a fender and have primed the repaired damaged area with a quality 2K primer, do they seal the fender? NO...the sealer would cover the color in the blend area not allowing for a blend of color. Sealer is meant to give the vehicle being painted a uniform substrate, if you have a uniform substrate....why seal it? It's just another product that costs money, keeps you in the paint booth longer and gives you more opportunity to get dirt or whatever other imperfections that might occur in your new paint job.

Hope this helps.

Ray

Good information Ray. I took for granted he was painting the entire car from his post, but I should have elaborated more as you did. Thanks for reading my mind and posting what I was thinking .

Kelly
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Old 07-05-2013, 09:27 AM
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Well Kelly, why don't we just call it team work, LOL...the advice you give is always valid.

I've always been one to avoid using sealer whenever possible. The way I look at it, if I need sealer, there is something suspect about my substrate and that's always scary.

Ray
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Old 07-05-2013, 02:36 PM
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thats the reason i like to ask, there is a lot of good information on this site, thanks again.
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