Over coating epoxy paint

[hpeer]

I should add my surface is NOT dirty, oily or otherwise contaminated.

So I am not sure this product will be a significant help.

Something that would etch, that would be the ticket.

[hpeer]

Originally Posted by Bill O

The Prep88 looks like a good cleaner and possibly removes any old epoxy surface film/grease. It doesn't seem like it etches the paint. I did read the instructions, but do you need more to top coat?


My understanding w/cured epoxy paint one needs to sand/etch the surface to get a better bite, otherwise it wouldn't adhere well.

Yes, I am looking to add a new top coat.

The descriptions are variable.

Here is yet another.

DuraPrep®

The PREP88 is a biodegradable concentrated water-based alkaline cleaner that is designed for industrial or commercial use. It can applied to the surface with a low pressure sprayer, brush or roller.

I agree, I am looking for something to etch the base epoxy paint.

The Prep 88 looks like a dead end.

[clockwork orange]

Are you sure the existing paint is epoxy? I only ask because typically epoxy is used for primers but, at least with 2 part topcoats, they are almost always polyurethane hybrids. I'm not actually aware of any 2 part topcoats.

[hpeer]

100% sure epoxy

[s/v Jedi]

Do you have spots out of view where you can try methods? If so, I would surely try “deglosser” even though it’s meant for softer paints... for which it works really good.

When new paint has fully cured on test spot, use knife to cut tic-tac-toe pattern, put tape over then rip tape off to test adhesion.

[zeehag]

ok so we painted my mizzen with epoxy paint and it sat in sun for a year without any coating over...
oxidation happens
so we sanded it and applied another coat of white, then stripes where i wanted em but they were placed lower on mast..hahahahaha unique--and added 2 coats of imron claro aka clear coat, same as used on show cars..yup...
and th e automotive painter who painted this on with spray ...yes spray.... made sure the paint was well bonded with the claro for longevity.
ta daa.... perfection.
we sailors can learn a lot from automotive specialties as in restoring and show car building. paint aint just paint.. the marine epoxy paint we applied first doesnot tolerate sun. oopsy. clear coat imron loves sun.
enjoyyoiur conundrum. mine is cured.

[clockwork orange]

Can someone please share some brand names of the epoxy topcoats you are using please.

[zeehag]

Originally Posted by clockwork orange

Can someone please share some brand names of the epoxy topcoats you are using please.

IMRON dupont, but dupont sold to someone else..is IMRON. we used it on racing cars and itis used on show cars and other important stuff needing a clearcoat. can also go to an automotive paint shop/restoration shop and ask what else is used...

[mvmojo]

Originally Posted by clockwork orange

Can someone please share some brand names of the epoxy topcoats you are using please.

We painted MOJO using the Ameron/PPG system of paints. After sanding we applied two coats of Amercoat (Bar Rust) 235 two part epoxy. Top coat was two coats of Amercoat 450HSG (semi gloss). Anywhere we had exposed steel from sanding we first coated with Cathacoat 302H inorganic zinc primer then the 235 then the 450. Came out very nice!

[clockwork orange]

Originally Posted by zeehag

IMRON dupont, but dupont sold to someone else..is IMRON. we used it on racing cars and itis used on show cars and other important stuff needing a clearcoat. can also go to an automotive paint shop/restoration shop and ask what else is used...

Imron IS NOT an epoxy, it is a polyurethane based paint as are Awlgrip, Awlcraft, Perfection, Alexseal, Quantum 99 and pretty much all of the well known 2 part paints commonly used for boats and most automotive paints as well. I can't think of any epoxy based topcoats actually, although they may exist. As I said earlier the all use epoxy PRIMERS. If anyone knows of one please share.

[clockwork orange]

Originally Posted by mvmojo

We painted MOJO using the Ameron/PPG system of paints. After sanding we applied two coats of Amercoat (Bar Rust) 235 two part epoxy. Top coat was two coats of Amercoat 450HSG (semi gloss). Anywhere we had exposed steel from sanding we first coated with Cathacoat 302H inorganic zinc primer then the 235 then the 450. Came out very nice!

Attachment 225462

Attachment 225463

Awesome boats those Passagemakers, she's gorgeous, envy.