I used both magicezy 9 second chip fix and the hairline fix with. This resin can be used as a protective surface over the top of fiberglass, or simply as a finish, much like you might varnish a piece of outdoor furniture. If your tooth is broken, chipped, or fractured, see your dentist as soon as possible. Cold temperatures can lead to slow gel coat cure times, while moisture can cause pinholes, blisters and other imperfections in the gel coat. If you want your boat to look better than new, we can paint it, which will make it. Making sure that your gelcoat is applied evenly on the paintbrush, go over the base of the boat, beginning on one side and working your way over. Crazing in gelcoat, also known as spider cracks or stress cracks, plagues countless boaters. After 3 sessions it was filled and is now nearly invisible. Noticed while the boat was on the lift that there is a chip in the hull at the very bottom of the v, just below the forward seating area on our 260 ssi. This sort of damage can allow moisture to penetrate into the boats layup and cause gelcoat blistering down the track. They can occur in any form of fiberglass, including cars, boats and swimming pools. The non skid is the hardest place to repair gelcoat. This was a very easy fix, mix 4 drops of hardener in 1 teaspoon of gel.
The chip is probably about half inch all around, and looks like it went all the wa. And remember, polyester gelcoat always deteriorates with time, so the old stuff you just covered up is still there ready to cause future cracks. I have a few areas of hairline cracks in my gelcoat more cosmetic than. Repair chips in gelcoat below the waterline boat talk. Is there any really good reason that i shouldnt just fill the bolt holes.
Another paint place said the manufacturer of the rv used cheap fiberglass and that it has cracked and caused the paint to crack. Stress cracks, spider cracks, and hairline cracks in the decks of older boats are, of course, not rare. Repairing cracks, scratches, and dings in gelcoat is a fairly straightforward matter, and it can. Apply gelcoat use a small wood or plastic putty knife to spread the gelcoat smoothly over the repair. Tips and repair methods to avoid michigan fiberglass sales. Inspecting your boats finish cracking due to shoddy construction the stiffener, the squaresectioned part on the left, should have been laminated to the plywood frame it intersects. The plan was to do the repair when i pulled the boat out for the winter. The gel coat is in pretty rough shape cracked, chipped and pitted.
Finally, apply a coat of highquality marine polish and your repair is complete. Repairing gelcoat cracks and chips sailnet community. Because the gelcoat protects your boat, you should not neglect it. Nov 15, 20 dolphinite gelmatch gelcoat repair spray test dolphinite has a proprietary database of boat gelcoat colors going back to the 1980s. Feb 11, 2011 dont forget there are gelcoat produced for other parts of the fibreglass industry other them boats, high uv protection is way up on the list of new zealand gelcoats, some gelcoats chalk quickly and has a lot to do with the amount of pigments to get added to get a better coverage when being sprayed. Seems like a lot of money and it seems like the manufacturer should be paying since they screwed it up either way. We are using the gel cote international scratched surface repair kit with wax to fix the chipped hull in just over 2 hours. The hull condition was outwardly horrific, with thick layers of mystery paint peeling off in sheets, and crazing visible in.
You can start with 220grit sandpaper and, for a really slick surface, finish with at least 400 or 600grit. For the most part, the cracks i had to fix were near the bottom of the drive hole, but i had a few damaged areas up in the red section of the deck where the boat had previously suffered some sort of hit likely smacked the dock and long cracks originating from where the pitot tubes had been installed by the dealer and the gelcoat had been terribly cracked in the process. Crazing is an incredibly common issue on modern fiberglass boats, and although it usually starts off as a matter of cosmetics, in severe cases these surface cracks can grow, deepen, and eventually threaten your boats structural integrity. Hairline spider cracks must be opened wider and filled with an epoxy filler to be permanently repaired. The easiest repair method is to sand the surface heavily and roll on two coats of epoxy primer followed by two coats of twopart linear. They allow the small water molecules in, but do not let the larger. There are many ways to repair cracks in fiberglasswhich ones the best. If the fiberglass will be exposed to water, the gelcoat should be marine grade. We were able to repair the cracks and paint the bowl with a perfect blend into the original surface so it looked just like new without having to completely refinish or replace the entire vanity. Repairing minor damage to the gelcoat surface of your boat west. The gelcoat and laminate act as a semipermeable membrane. Most gelcoat pastes are available in white or neutral colors, but straight out of the can they rarely match aged gelcoat. Dont forget there are gelcoat produced for other parts of the fibreglass industry other them boats, high uv protection is way up on the list of new zealand gelcoats, some gelcoats chalk quickly and has a lot to do with the amount of pigments to get added to.
The reasons behind the popularity of this material are that they are lightweight, easily moldable and easy. Jun 26, 2012 camper nicholson 31 owner repairs cracks and crazing in the gelcoat on the hull. Sometimes, theyre merely cosmetic, meaning they dont penetrate the gelcoat. If you have used a gelcoat coating in the past, you will need to remove it completely with an acetone solution. With time, it is possible that gelcoat can become cracked, simply through wear and tear or a specific incidence of damage. When looking at a scratch in the gelcoat, you need to determine whether it is a surface scratch or a deep scratch. Spider cracks are a form of fiberglass damage that occurs from minor flexing or impacts. In most cases this is true, however it is important to seal them correctly otherwise water may penetrate into the fiberglass and cause more serious damage. If your boat is more than a few years old, youll probably be surprised at the number you find.
If you have a hole or scrape in the fiberglass, this stuff will be a strong repair. How to fix crazing in gelcoat, also known as spider cracks or stress cracks. How to fix spider cracks in fiberglass it still runs. The next time you are cleaning and waxing your boat, take the time to look for small cracks, scratches and chips in its gelcoat. Sep 05, 2012 learn how to repair a gelcoat scratch. Our staff, adult volunteers and students devoted countless hours to bring this wonderful cruising yacht back to life. If you are just fixing gel coat, this is overkill and i wouldnt recommend it. This diy is not difficult and could save you a lot of money by. In the remodeling of this trailer, i was left with many small holes from antiquated peripherals on the sides of the trai. Hi david, as long as the is no damage to the glass beneath the gelcoat, its a pretty simple fix just repair the individual spots. How to repair a gelcoat scratch bottom paint store. Gel coated fiberglass has become an exceptionally popular material among the bath product manufacturers in the us over the past decades. The bottom had cracked badly and chipped out in a couple of spots after 20 years of use. Discussion in fiberglass and composite boat building started by lmb, nov 3, 2008.
I would, at a minimum, want to fillin the cracked area. Camper nicholson 31 owner repairs cracks and crazing in the gelcoat on the hull. Aside from the durable shiny luster gelcoat adds to any fiberglass boat, most owners know little more than wash and wax it frequently. Gelcoats are modified resins which are applied to moulds in the liquid state. Apply gelcoat use a small wood or plastic putty knife to spread the gelcoat smoothly over the gelcoat repair. Remove seals from the edges of parts or fittings when doing a repair around that part or fitting. Do not expect to get a smooth glossy finish out of it, just something that looks a little better.
Spider cracks in gelcoat moderated discussion areas. For the deep scratches id use a product called adtech p14 and fill the gouge just shy of the surrounding gelcoat leaving a bit of room for the eventual gelcoat. To sum up, the only way to determine the cause of a stress crack, especially a minor one, is to grind the gelcoat off to evaluate the structural integrity of the fiberglass substrate. How to repair gelcoat, fiberglass boat repair boating magazine. Repairing minor damage to the gelcoat surface of your boat. Dolphinite gelmatch gelcoat repair spray test boating magazine.
If all the old cracked gelcoat isnt removed, the flexing of the surfaces will cause the cracks to grow up through the new finish and your new finish will soon look just like the old cracked one. As for painting above the waterline, the light blue interior and white exterior gel coat need refinishing. Light crazing in the gelcoat sailing anarchy forums. Theres also a great article on how to drill holes correctly to avoid chipping and cracking in fiberglass. If the surface of your boat looks like a cracked eggshell, the gelcoat is suffering from crazing sometimes called alligatoring. At that time the surveyor pointed out some very small cracks in the transom gelcoat around the rim of the exhaust. Her decks were saturated with water, the engine was not functioning, the gelcoat was badly chipped and cracked, the teak was in sad shape and most of the boat systems were not working. He felt they were cosmetic and recommended repairing the gelcoat. Here are the steps and ways on how to repair gelcoat, chips, scrapes and gouges all by yourself using the right repair kit. I have a 93 208 adventure with a badly chipped bow pulpit. I bought a repowered 2000 25 cc in april of last year. Try to remove minor gelcoat scratches by water sanding using a hard rubber block or hard piece of plastic with grits 220, 320. Fill the repair slightly higher than the surrounding surface to allow for sanding. The reason being is that surface scratches can easily be buffed with a rubbing compound as opposed to deep scratches which take a couple more steps.
Gelcoat is created from a special adhesivelike material that tends to dry into a hard, shelllike covering, soon after application. Restoring cracked gelcoat on canoe boat design net. This requires identifying and removing all damaged material. The new dolphinite gelmatch allinone gelcoat aerosol can is an innovative product that solves the traditional challenges when repairing gelcoat.
The topic of gelcoat is often a mystifying subject for boat owners. Using gelcoat or polyester resin from any hardware store or boat accessories outlet may get you frustrated and give you a poor boat. Nov 03, 2008 i hate repairing large areas of crazed or cracked gel coat, its a great deal of work and if the cause of the crazing or cracking isnt taken care of then its sure to return. To ensure good adhesion it is critical that the repair patch is adhered to undamaged laminate. Measure a small amount of gelcoat, which is a thick form of fiberglass resin, into a paper bucket. It is often said that the gelcoat crust is a bit vulnerable to cracking. I think most of the reports of cracked or crazed gelcoat on 3040 year old hulls is ultraviolet rays from the sun damaging the gelcoat over time. Try to keep your work area at or above 70f and free from moisture when working with gel coats. The problem of gelcoat blisters in fiberglass boats 3 figure a laminates susceptibility to moisture permeation tends to increase with. After cleaning out the cracked areas with a grinder, i applied this with some tints to match the original sort of off white color. Most repairs are costly and time consuming, so mistakes in mixing and color matching can be very expensive.
We tried west marine gel coat scratch patch, and although very careful. How to fix spider cracks in fiberglass by alex smith. The canoe was given to me and does not leak, even where there is the big ding see photo. Small cracks form in the outer surface of the fiberglass, spreading out from a central point like a spiderweb. Magic fix for hairline cracks in gelcoat practical sailor. It seems to be a bit finicky on the hardener to base ratio but that could be also problems with my technique.
After many seasons of disuse, she was donated to phlas in 2011. Improper temperature and humidity can also cause problems in your gel coat. I hate repairing large areas of crazed or cracked gel coat, its a great deal of work and if the cause of the crazing or cracking isnt taken care of then its sure to return. You should have about 10 to 15 minutes of working time after adding the catalyst before it starts to harden and is no longer fluid. If the gelcoat thats not fully cured is feeling a bit rubbery and part cured and youve already got a first layer of gelcoat underneath it providing a hard surface for the mould then i think i would take the chance and go ahead with the coupling layers and backing layers. Also, some laminate was missing from the original design, making it even more flexible in this location. I all ready have the replacement pulpit bought last spring on ebay, someone ran out of money on a rebuild and am planning to replace the old one next spring. If you notice any chips, scrapes or gouges in the gelcoat exterior of your boat, it is important to fix the damage asap, especially if the damage exposes the fiberglass matting underneath. The most common gelcoats are thermosetting polymers based on epoxy or unsaturated polyester resin chemistry. However, if maintained properly, a gelcoat layering easily outlasts a painted surface. This instructable comes from a recent project i have been working on that involves fixing up an old fiberglass travel trailer.
Adhesion failure in the repair laminate is the most common failure mode for fiberglass repairs. My plan is to remove the many coats of antifouling paint below the waterline, then apply three coats of the west system epoxy and repaint it. I am doing lots of reserch and want to do this rjght so i need to be clear on which processes to. The next time youre cleaning and waxing your boat, take the time to look for small cracks, scratches and chips in its gel coat. The condition upon arrival was quite poor, with badly weathered woodwork, chipped, cracked, crazed, checkered, and peeling paint and gelcoat, and a general state of disrepair that might make this seem an unworthy project. Schulman white gelcoat boat paint, polyester exterior gel coat kit, 1 quart w 1 oz mekp, no waxsanding, professional marine gelcoat, boat exterior hulls, boat interior decking, diy projects at. The reasons behind the popularity of this material are that they are lightweight, easily moldable and easy to install. A badly damaged or broken tooth may require a more lengthy and. Painting over cracked and chipped gel coat moderated. My son and i have started restoring a 1968 boston whaler footer i have owned since 1972.
We fill in the chip with a new layer of polyester resin. Clean repair area and all tools with acetone prior to application. Try to remove minor gelcoat scratches by water sanding using a hard rubber block or hard piece of plastic with grits 220, 320, 600 or 800 then before a fill or spray. During the fall i noticed some rust colored staining of the hull around the area and.
After it cures, we sand the resin flush and polish it to a gloss. Boatus magazines mark corke takes you through the steps necessary to repair gelcoat on your own boat. Repairing hundreds of fiberglass cracks to get ready for. Most repairs are costly and time consuming, so mistakes in mixing and colour matching can be very expensive. Dolphinites gelmatch allinone gelcoat aerosol can takes the guess out of these problems, providing an aerosol can that is prefilled with a proprietary allinone gelcoat and matched perfectly to original factory colors. Nov 06, 2009 i have a 93 208 adventure with a badly chipped bow pulpit. Remove rails, cleats, louvers, snaps, striping tape, etc. Gelcoat or gel coat is a material used to provide a highquality finish on the visible surface of a fibrereinforced composite. If you want your boat to look better than new, we can paint it, which will make it really look great.
Repairing hairline cracks and how to do repair gelcoat. Check out our new website its pretty flippin awesome. Hairline cracks, stress cracks or spider cracks star cracks that occur in gelcoat surfaces on fiberglass boats or other water craft are often seen as a cosmetic issue. This sink was in cracked and chipped in the bowl around the drain. Mar 26, 2019 once the gelcoat has fully cured, sand the repair smooth wet sanding works particularly well with gelcoat. Gelcoat is a fiberglass resin that has had a pigment added to it. Creating sharp corners when shaping the area to be repaired. This worked perfectly on flat sections, but it broke down for us on corner cracks or through nonskid, where leveling difficult. Photos of canoe with cracked gelcoat as you can see there is not just one crack in the gelcoat. Remember, gelcoat can change color slightly as it hardens, so to match it exactly youll need to mix a test batch or two, allow it to harden on a piece of cardboard, and then compare the final color against your existing.391 1323 1093 1013 554 1236 380 1059 270 166 485 1489 77 332 900 446 121 319 1352 591 1241 185 934 205 589 42 1229 32 291 385 715 916 191 1498 1337 139 557 1000 211 1270 1251 292 172 892