Another gelcoat question

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manuga

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Mar 9, 2011
5
Allied Greenwich 24 New Suffolk
This is my first boat and first posting here. I found a library of information and great tips on this forum and I've read Don Casey's books on the subject but I'm still not sure about what course to take. images here: https://picasaweb.google.com/manuga/Gelcoat?authkey=Gv1sRgCPOA3uiRscrB0AE&feat=directlink

Besides multiple scuff marks, and the problems described below, the gelcoat still feels solid. I tapped the hull around to check for deeper damage and the laminate seems strong everywhere.

- My main concern is along the boot stripe. The gelcoat cracked and large chips came off. It looks like a larger area will have to be scraped off before filling it. There's a dark green color underneath that doesn't appear to delaminate. Is it a backing layer of gel coat?

- Next, should I care about that big crack on the bottom paint (on the side of the orange stand) knowing that the shipyard will do a bottom paint soon?

- Finally, on the bow, there are two 7" long vertical cracks and an impact point (about 1/2" diameter) that is discernible on the inside as well if you really look for it. The laminate looks intact besides the impact point. There's also two thin cracks under the bow pulpit plate. Is there a sign of something deeper here?

I have only a few weeks before the boat goes back swimming and I'm looking at doing a repair that will protect the hull well enough until the boat is hauled out again next fall. Painting or sanding the entire hull seems out of the question for now. Although I'd like to do a more lasting job next year. The boat is a 1969 Greenwich 24. Any advice to a newbie will be greatly appreciated.
 
Sep 25, 2008
7,696
Alden 50 Sarasota, Florida
Not sure who Don Casey is but you might want to read some other stuff. What you see is the surface layer (gelcoat) coming off and cannot be "patched" but rather feathered or sprayed in with new gelcoat. The problem is color match which is difficult at best above the water line - below makes no difference for obvious reasons.
 
Aug 19, 2004
239
Hunter 35 Vancouver, BC
The problem is color match which is difficult at best above the water line
Watched a professional doing this job in the boat yard last year. His tip was to lightly sand the gel coat in the area adjacent to the repair in order to fully reveal the natural (unfaded) colour. Otherwise your colour matching efforts are doomed from the start.
 

manuga

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Mar 9, 2011
5
Allied Greenwich 24 New Suffolk
Nice job Tom. I'm eager to get into that kind of trouble, but I'm a total noob in terms of boat repair so I have a lot to digest before I get into a big project. I also need to find a yard where I'll be able to. I'm reading and asking around to get a better idea of what I should expect.
What kind of damage and how did restore your hull? Sanding and spray-painting? How many days did you work on it?
 
Oct 2, 2006
1,517
Jboat J24 commack
In a big restore job painting the topsides (hull) is the second biggest job only surpassed buy painting the deck (correctly )with good material

Your looking at weeks of labor + and easy thousand in material if you use good paint and i am still far from done as your very restricted by the weather

Its the one job on the restore which i still have drought if i took the right approach in going for top quality finish on a 40 year old boat

A boat yard is gonna be pretty fussy about the dust from the prep work as i fully tent the boat to containe dust and most likely will only let you roll and tip which looks pretty good
 
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