Update to Peeling Bottom Paint

[TimC2520]

Well, I spent this past Sunday getting all the "loose" stuff off on my stubborn port side. I wiped down all the bare spots with Acetone.
In years past, due to time constraints, I used to hit these bare spots with a coat of "hard" paint, wait a couple of hours then do the entire hull with a seasonal ablative....Maybe this is one reason I'm having the trouble of it not sticking. This year I want to grab a day here and there when the weather is nice over the winter (near 70 today!) and try to do it right.
I want to be ale to go down there in late March and have it ready for one coat of a seasonal ablative, get the prep work over during the winter. I'm thinking my options are :

(1) lightly sand, acetone wipe, then 2-3 coats of a hard paint in these bare spots. (Maybe a week or two in between coats???). Since this option involves sanding, should I start with a barrier coat first, then a couple of coats of "hard" paint? Then the seasonal ablative in the spring? Again, leaving days between the coats instead of just hours?

(2) Sandless primer, then some coats of "hard" paint, then the ablative come spring time? This option probably is more work since the primer shouldn't be allowed to fully dry before applying another paint, correct?

(3) I have also been told that even though the primer says "sand-free", it might be a good idea to lightly hit it first with some sand paper.

All of this would be done during favorable weather, maybe 50-55+- as Im sure there will be some days over this winter when we'll see that.

What would you guys do? Here is a pic of what I have now. There is no more loose paint left and these spots are wiped down pretty thoroughly with Acetone... Thoughts?

 

[Anonymous]

the bottom is gonna get worse...look closely...i hate to tell you this...but...the remaining paint is just gonna continue to peel,the bottom of the boat was not prepped correctly...the smartest approach to this problem,is to follow the advice i gave you,in the other thread...you're kinda spinning your wheels just doing what you're talking about.....

http://classicparker.com/phpBB2/viewtopic.php?t=3155

 

[TimC2520]

Well, unfortunately the dealer did a crappy job I guess. Now I'm left with the problem. Sux that it's just the one side.....For a little bit more work on their part, this may not be happening. IF it was soda blasted, do the barrier coats HAVE to be put on using certain time restraints? Everyone I talked to that did it themselves hated it....telling me I'll be down there at 3am with flood lights still painting away because the coats have to be done at certain times....

 

[Anonymous]

Well, unfortunately the dealer did a crappy job I guess. Now I'm left with the problem. Sux that it's just the one side.....For a little bit more work on their part, this may not be happening. IF it was soda blasted, do the barrier coats HAVE to be put on using certain time restraints? Everyone I talked to that did it themselves hated it....telling me I'll be down there at 3am with flood lights still painting away because the coats have to be done at certain times....

not true...
the new interprotect 2000e,it has a 2 week coverage,meaning,it can be left as it is for 2 weeks,before you have to lightly sand the surface... use bothe colors,get a gallon of each,white and greay....start with the grey,the idea here is to assure complete coverage... i use the small foam rollers to apply the barrier coat,you want the barrier coat as thick as a match book cover,if it's not that thick,you've got a very expensive primer,that's all...when i read guys have put on,one or two coats of epoxy barrier coat,i laugh,it will do little if anything...i highly reccomend you "bite the bullet" and do it now...the condition you've got is only gonna get worse...
follow the advice i gave in that other thread,it's the smartest thing you're gonna do...it does suck,however,your's is not the first boat i've ever seen not being prepped correctly...it happens constantly...not to talk bad,but there's a parker dealer near me,i've seen the same thing with boats from that dealer,and,i've also seen boats with aluminum outboard brackets come from there, painted incorrectly.... :roll: the infamous,boat that fell off the trailer on the parkway,the bottom paint on that rig was a mess,it was peeling off in giant chunks...i showed the owner,the bottom of the hull,where the paint had popped off,the surface was glossy and slick-absolutley no prep,sad huh ?? so trust me,you're not alone in your miserey....

 

[TimC2520]

It is a shame more care isn't taken in the very beginning (in some instances) to avoid nothing but headaches in the future. I'm sure their are good people who still do it correctly. I bet whoever prepped it saved a few hours of their time that day. :evil:

 

[Hammerhead]

Got about the same problem with our 2320. It was painted with Ultra for 8 years, staying in the water in NC, then repainted or added paint every spring. A trailer was purchased by the owner and sold to us. I can scrape the old paint off with a putty knife, the bottom looks rough like it was sanded. I do not know how a properly prepared bottom looks. I was going to scrape and paint with Vivid. No one close to us does the bottom jobs, so this will be us. Any advice from Jimmys?

 

[TimC2520]

You know it's funny, I have a friend who has the same boat. It's a 1991, 2520. It's in the slip next to mine. Every year, for 16 years now, he uses less than a quart of hard paint on it, thinned down to practically water (yes, LESS than a quart). I always thought he was crazy. The Interlux site says the "standard" for a 25 footer to be somewhere in the range of 3+- quarts if I read it correctly. His hull looks perfect, zero growth and the paint, even today, looks like it was just done yesterday. No fading, no chipping, no barnacles, no nothing. He is probably one of those "exceptions" to the rules, but it makes me wonder whether we use "too much" paint sometimes.

I'm not saying that is why I am having these peeling paint issues, it's not, just that sometimes maybe less is more if you know what I mean. How much paint do you guys use generally?

 

[Bryan 2530]

On my last boat (25 Whitewater) I stripped the hull to bare gelcoat the year after I got it. I used hand scrapers and palm sanders to do the job. Very labor intensive and messy but I was 10 years younger and poorer.

After the hull was stripped, i repaires some minor srapes ans scuff a hull from '83 would have, sanded and faired the whole bottom so ther was no trace of bottom paint. I did the interprotect epoxy barrier coat following the routine. It was not hard at all, this was the second boat I had done it on, the first being a 40' Ocean.

After the barrier was cured I did one coat of blue and two coats of shark white usings ablative Micron CSC at the time. After that I only used one quart of paint a year for water line and touch up. No problems no peeling, no build up. I also believe less is more.

My 2530 has hydrocoat on it. So far I am very pleased with it. It is VERY easy to apply and work with (waterbased) and no peeling or growth on the bottom after one season with me.

If I were to have to strip a boat again I would pay to have it blasted, then go the barrier coat route and probably apply hydrocoat if it is compatible.

As stated before, anything short of stripping the paint atleast off that side is just band-aid fix. And stripping down to gelcoat agin you get into the mind as well philosophy with the barrier coat. :roll:

Its up to you, the very least I would do in you situation is strip that side, sand, wipe clean with appropriate solvent and repaint to manufactures instruction.

Hope that helps.

The other option is keep the boat on a lift.

 

[TimC2520]

I just came back from the marina, I decided to just bite the bullet and have it soda-blasted away, the entire hull, probably late Feb, early March during a good weather window. The owner of the marina wants it tented first and I got a price of $650+-, not bad I thought. It's under a Fisher canvas now so I'll wait awhile before I uncover it.