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Username Post: Urethane primer over Epoxy primer        (Topic#348045)
Senior Member
Posts: 1543

Loc: Shreveport
Reg: 04-24-02
11-04-17 03:38 PM - Post#2713267    

1. Can I spray Dp90lf Epoxy "non sanding" primer and if I see something that needs sanding spray DPS 3055 Urethane on top of the Dp90lf epoxy to sand if needed?

2. Does it matter which Primer is used first? I think I have the body straight.

3. A lot of places have been repaired and have welded panels with filler.

4.Can you wait till the next day after you put on primer to spray on basecoat and clear coat?
I may not have time to do it all in one day.



Senior Member
Posts: 1543

Loc: Shreveport
Reg: 04-24-02
11-14-17 09:35 AM - Post#2714343    
    In response to SteveW

Well I finally found the info I needed.
I am going to post it so if somebody else like me needs it they will know.

The order of application:
#1 strip to metal.
#2 epoxy primer
#3 do your body work
#4 2K primer
#5 Block
#6 more 2k primer
#7 block
#8 spot prime as needed (2K reduced slightly)
#9 finish sand with a block
#10 seal with epoxy
#11 scuff and paint.
(If you elect to use an "etching primer" on the bare metal, then apply epoxy over that, and proceed with step #3)

Yes you can apply 2K over epoxy, and vise versa. But you want to apply epoxy to bare metal.

Honored Member
Posts: 27389
Loc: Katy, Tx, USA
Reg: 07-06-00
11-14-17 08:36 PM - Post#2714424    
    In response to SteveW

If you apply the urethane primer over the epoxy within the time "window" (I think one week), you don't need to sand prior to the urethane. PPG says to scuff and apply another coat of epoxy after the window, but many just sand and apply the urethane.

I'm not familiar with your urethane primer product. I usually use PPG K36.


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