allforham

Thanks psyche Yeah I think you're right, I did wash it but maybe not well enough, and i was trying to hot coat the primer but I probably should have just let the epoxy cure for a month and sanded it. And used a two pack! Was in a rush to have the boat ready for summer. Lesson learnt..

Thanks guys, will give akzo Nobel a call and see what they say. I would certainly prefer a hard antifoul as I imagine it would stand up to trailering a bit better. I had read that once it dried up it was next to useless though, but yes you're right I'll ask the people who actually make/sell the stuff! Much appreciated

One more thing any suggestions how many coats of interprotect I should be putting over epoxy? See wildly varying opinions from one to 5 coats and It looks like I might need about 4l per coat

Thanks Frank much appreciated, yes I think it may well have been epoxy blush that caused it, i may have been too focused on achieving a chemical bond and didn't allow sufficient curing time, along with possibly half arseing the soapy water clean. Will certainly give it a really good clean before I sand this time. Great might just antifoul right up to where I've left the old paint on at the chine then, save me guessing the waterline and when it's parked in the shed most of the time it will be out of the sun Cheers!

Thanks bad kitty, yeah sounds like that might be the issue with antifoul being out of water, although while on the trailer the whole lot will be above the waterline! Would save me buying more topcoat for that little bit up to the chine and trying to remember where the waterline was though so I'm not too sure. Its just a fishing boat so not particularly worried about looks, the paint all peeling off was a bit much though! Regret cheaping out with the single pack primer and being in a huge rush now..

Hi all New here, after some advice about paint for a cat I built last year. Had a paint failure between epoxy and a single pack epoxy primer. Likely from not allowing sufficient cure time or trusting Google and not sanding before application. Luckily i was tight and only glassed to the chine. The paint has stuck fine to the ply above so could have been worse.. Boat lives on trailer in a shed but spends a good chunk of summer in the water and had some growth even with cleaning so have decided to antifoul this time, sounds like ablative is my only option to hopefully not