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Old 01-19-2007, 01:17 AM
Ronusmcmma's Avatar
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Spider webs & flex additive ?

I was wondering if someone could answer a question for me please? Ive got a auto body shop that is going to paint my 1989 RS Camaro in a few months. We are using PPG product's. My question is about the flexible front and rear bumper covers. They don't want to use flex additive . I was under the impression that flex additive stops the paint from spider webbing during the drying proses among other things. Should I be concerned about this? Any info. you can give me is greatly appreciated.

Sorry guys, should have done the search before posting .I would remove this If I could.


Last edited by Ronusmcmma; 01-19-2007 at 01:36 AM.
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Old 01-19-2007, 06:45 AM
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Don't be concerned about not having flex additive in the paint, the flex additive does provide more flexibility for a short period of time to help with assembly of flexible parts but later disappears. Today's premium urethane paints are more than flexible enough to last without cracking in average service conditions. I'd be concerned with how much primer surfacer build is below the paint, what kind of primer was used? A thick buildup of urethane primer surfacer isn't good. Most of the 1K and waterborne flexible plastic primers turn brittle with age. Epoxy primer is the only primer I've found that will stay fexible over time- SPI is one of the best (survives some serious bend tests).

Before they shoot the paint do some bending on the covers and see if it they crack.
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