Sealing with SPI epoxy

[Dwg86]

Is there any problems spraying SPI epoxy over e-coat and rattle can primer? I’ve build a pickup bed for my project. Most of the inside of the bed is epoxy primer, but the floor has e-coat and there are a few places that have rattle can automotive primer (the angle and tube supports). I’ve just finished all the fab on the floor, and I’m going to spray 3 coats of SPI epoxy prior to having it bed lined. This is a Jeep Wrangler pickup that I’m building, so it’s not going to any real hauling. It’s more of novelty build. I’ll be mostly hauling camping gear. The bed liner is more for sealing and rust preventative.

 

[Dwg86]

BTW, I’ve sanded the inside of the bed with 180.

 

[Jorge M.]

BTW, I’ve sanded the inside of the bed with 180.

Get rid of the rattle can primer if you can, that’s weak stuff that will compromise the strength of the paintwork, other than that you look good to go.

 

[Dwg86]

Thanks. Yeah, I only used the rattle can on a few of the supports. Since then I bought a small door jamb HVLP spray gun that I use when I need to do small areas. No more rattle can for me.

 

[Barry]

Glad you're dumping the rattle cans, all that work you are doing it would be ashame to redo because the paint lifted the primer or down the road when it comes off.