Notice:
The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.
A fellow sailor that works at a local hardware store recommended porcelain appliance repair liquid for small chips and such. I used it on a quarter size chip below the water line. We'll see in the fall how it worked but, it looked pretty good before covering it with paint. It might be worth a try for small chips above the waterline as well. Put it on in a couple thin coats then rub it out with a little polishing compound to blend it in. I think it was about $4 for a large nail polish size bottle.
The glecoat made to color match my gelcoat cost $95.00 a quart. I also purchase white gelcoat for $22.00 a quart, so your price of $18.95 a quart is the best price I've ever seen.
Years ago, I ordered a small jar of white gel coat from CD that was supposed to match my hull, but it had a rather buttery, yellow tint to it. Didn't like it.
Although I've never ordered from them, here's another vendor.
Gel coat to match your boat will match it before UV, ozone, nitrogen oxides, and other pollutants have had their way with it. The best, and cheapest, approach is plain white gel coat and tints. I have used a daylight photo after buffing an area of the hull and sampled the color in photoshop to get an r:g:b ratio as a starting point. Then mix a small batch and compare when hardened. Continue with a new sample until you have a close match, it will never be perfect, and then you have a ratio of tints:base for future mixes of any size.
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote">This is not a quart, it is about 3 oz. Not a good deal at all.<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote"> Wow....I didn't realize that. I sent a sample of gelcoat to a company in Florida and they matched it perfectly. Mine was for interior gelcoat. For outside work, it is very dificult to match due to fading.
Just bought a "super glue" sized tube of white, gel-coat scratch repair at WM for $12.99. Repaired some racing battle scars(a small gouge and chip) near the bow about three quarters of the way up from the water line. Looks good for now,can hardly see the repair. we'll see how it holds up.
Have you guys repaired stress cracks in gel coat? Do you widen them and then fill? I have several that don't seem to cause a problem, but look bad. Would like to take the time to fix if it's doable.
Welcome, Steve... Hopefully you mean "spider cracks"--generally caused by shrinkage of the gelcoat. (Stress cracks are bad things.) I've never seen a very good looking attempt to fill them--the result always seems to look worse after a while than the cracks did. Sorta like some plastic surgery.
Dave, I'll have to disagree with you here. Gelcoat is brittle, and near areas of high load like fasteners and corners, hairline cracks in the gelcoat do not indicate underlying failure. Some call them spiders because of their web like or radial pattern, but they are usually the same thing. But I agree that whatever you call them, they are best left alone. You can spend a lot of time color matching and filling, but they will come back. But on the other hand, if they bother you, go for it. In a few years, you'll either accept them or or open them up a little and do it again. So yes. gouge them out a little before filling. You can try to undercut the edges a little, but they will probably just flake off. Accept a "U" or "V" shape, I've never had success creating the inverted "V".
I've got two odd looking cracks, I may take a picture and show you. Odd because they aren't near any fittings or obvious stress points. One is on the corner of the cabin up front, the other near it on the flat part of the deck. Don't appear to be causing a problem at this time but are definitely noticeable. May not be worth trying to fix. I'll have to inspect it more closely, just bought the boat a month or so ago.
Thanks for your comments. This forum has been really helpful already and I haven't even put the boat in the water yet. I have a std rig /swing keel '81 model #2555.
I have read that when repairing a spider crack and merely applying the gel-coat over the crack that the material only bridges the scratch; however, if the a v notch is made in the crack, then the crack is filled with the gel-coat; makes for a stronger bond.
Regarding matching the gel-coat tint to the original gel coat, many have indicated they come close to matching, but I have not read nor heard that anyone has matched gel-coat. Sounds like a practice and test of nerves, patience, and will.
Interesting to read that Dave used photoshop to get an idea of the balance between the colors. Great idea!
For the past few days, I have been chemically stripping the bottom paint away from the hull. Today I noticed a few minor spider cracks near the water line. I may need to play with gel coat some as well.
Notice: The advice given on this site is based upon individual or quoted experience, yours may differ. The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.