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Re: [T3] painting over Por 15 was: Digest V2005 #698

In a message dated 11/9/05 6:36:14 PM Eastern Standard Time, 
paul_cowan@juno.com writes:

<< I have chased oft the rust with Por 15.  I let it stay awhile and the rust 
never did come back.  Now what sort of primer paint should I use on my 68 
type II? I have a sprayer.  >>

You have 2 choices, one is that you scuff and re-coat it with fresh Por 15, 
then about an hour later (while the Por is still tacky), spray some DP epoxy 
primer on to it and let it dry over night. Then you can finish like normal. The 
other choice, is to use their (POR's) tie coat. Scuff the dried Por 15, and 
spray on the tie coat, and let it dry. Note, if the Por 15 is over 7 days old, 
you'll have to scuff and re-coat it before you can do anything with it. Then 
you can top coat like normal.

 Now I've had problems with the tie coat lifting after spraying it with DP 
epoxy primer, but not everyone does. I've actually gotten to the point where I 
don't use the tie coat anymore, and just put the DP epoxy primer on it while 
the Por 15 is trying to dry. Since going that route, I haven't had a lifting 
problem since. Now I only use the Por 15, when I can't properly prepare the 
surface (ie... sandblasting), so I really don't keep much of it around anymore. 
Properly prepared sheet metal with just a coat of DP epoxy primer, will outlast 
and provide better durability than the Por will. :O Plus I don't have to worry 
about lifting problems, and ALL the top coats are compatible with the epoxy 
primer. This is just my take on it, others will chime in later, both for and 
against the Por 15. I hope this helps.

Bob 65 Notch S w/ Sunroof and IRS
       71 Square, now a 2 seat Roadster, pics can be seen at; 
http://volksrods.com/forums/index.php?showtopic=2977 and now awaiting a 2.0L  t-4 engine 
       69 Square AT, daily beater Sold back to the PO :O

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