Painting over epoxy coated ply

[dankilb]

I wouldnt bother carrying a load of paint just for the dinghy. Any automotive two pack poly will do. You can buy that all over the place. We had some Awgrip left over from painting the cockpit that we also used for the dinghy. Its nice to have paint that does several jobs. Space gets tight when you are living aboard and you will definitely being adding stuff as you spend more time living aboard.

That’s our philosophy. So we’re using only one primer (Penguard HB) on interior as well as a part of the osmosis barrier for our refit. Idea being we’ll just carry a tin of that (or know that’s what we need to order). Bit of a coatings snob so not a fan of having to rely on paints that are an unknown quantity for the important bits. Also below the waterline, even on a tender, is still a relatively demanding environment.

 

[dankilb]

What's the compatibility like between different brands of tw-pack? Are they all using basically the same chemistry?

Two pack can mean a lot of things... In the auto world it’s acrylic, I think. Epoxy obviously figures highly in the marine world. I think marine topcoats are often polyurethane. I’m no expert though...

Most things will happily go on top of a non-solvent epoxy primer. But epoxies can eat other coatings if applied over the top. Not sure about other comparability.

 

[Bajansailor]

Just use relatively cheap and cheerful automotive 2 pack paints which are obtainable pretty much anywhere - they work wonderfully on boats!