I've done a lot of patching with Spectrum 2-oz. What?s the difference between epoxy resin and gelcoat? A good practice is to pour the mixed gel coat from the mixing container into another container used for application. Fenders, Boat Trailer Fasteners, Boat Windshield profile | register | author help. Spraying gel coat is recommended for more accurate and consistent coverage. Helm Seats, Shop Towers, Tow Ropes & As the gelcoat cures, it develops heat that helps it complete the cure cycle. The keel is especially prone to damage from accidental impact from underwater hazards. Please note, one gallon of gel coat will cover approximately 40-80 sq feet. I have never used Marinetex, and have don't know if the chemical makeup is basically the same as West System or not (I think it is), but I have read many posts from many people whose opinions I respect in which they say it's a great product. If you plan to overcoat your boat surface with Durabak for longer-lasting protection, tinting the gelcoat is not necessary. The mixing of the color is guaranteed to teach patience. WebCorrespondingly, how long does it take gelcoat to cure? If your gel coat appears to be sagging, it could mean that you have applied excessively heavy applications in one or more of your passes while applying the coat. In fact, in those spots, I could almost scratch it off with my fingernail. What can I try to get the gelcoat to cure? (how about if I spray a clear liquid wax on it?) Spraying gel coat is recommended for more accurate and consistent coverage. Most gel coats will have information on proper catalyzation ratios to follow, be sure to consult your product data sheet before you begin mixing. gel cures by what's called free radical chemistry. How long does a ceramic coating last? Now, Shop Kingfish: The product I was using was the Sprectrum kit that comes with the small glass jar of gelcoat paste and the very small plastic squeeze tube of activator. Measurements need to be exact so you can be confident the gelcoat is mixed properly before applying it to the surface. Apparently from your experience, Spectrum does make that claim. Trolling Motors, Shop Alternatively, look for a gel coat repair kit that comes with pigments that you can add to the resin. Begin wet sanding with the finest grit that will remove orange peel in the re-sprayed area. Tops, Other If this is not the case, Spectrum color will be able to match a gallon minimum should you be able to supply a small sample. Blisters refer to soft, sagging areas on the gel coat, which could be an indication of a few different problems with the gel coat. You may need to polish the entire side of the boat to restore the original color. Pigments to tint the base color to can also be obtained from Spectrum Color for adjusting a match. This will cause the gelcoat to start curing in the can or while you are applying the gelcoat. If I remember right, the directions call for mixing half the jar with 11 or 12 drops of activator. I just brushed a thin layer of MEKP, and turned the heat on to force curing. Q. The recommended ratio is 1 oz wax to 1 quart of gelcoat. You should also feather the surrounding area of the gelcoat repair with 220/330. Gelcoat is a protective layer that helps to prevent the hull from damage due to UV rays and other environmental factors. When you are satisfied with the color match ,wipe away all of the test smears with acetone. Without a covering it will take days to cure . Mix the patching additive (Patch-Aid is recommended) with equal parts of the 2/3 portion of the matched gel coat. Durabak is used on the decks of 11 nuclear aircraft carriers and many warships and naval vessels. Temps below 70 and high humidity will also slow the curing process way down. The thickness of the gelcoat is between the last tooth to come up withgelcoat on it and the next clean tooth. To avoid this, make sure that you are reaching a If the temperature is 70 degrees F or Handles, Life Jackets & Separation of color is usually related to improper spray techniques during the coating process. Use. Problem is that it does not seem to be cured enough to work with sandpaper. Accessories, Electronic Navigation WebHow long does gelcoat take to cure? Register now for free! This wax additive seals off the surface from oxygen in the air, allowing the gelcoat to dry tack-free. & Rings, Prop Nut Kits & If there is a molded bodyline or corner near the repair, you may want to extend the color patch to that point. Sometimes my gelcoat takes for ever to cure. ), http://www.silpak.com/products/47-pokp-ratio-chart. Gel coat is now part of the final composite. I just brushed a thin layer of MEKP, and It may not display this or other websites correctly. Finally, apply a coat of wax-based gel coat polish. For minor cracks, scratches, and gouges, you can purchase a DIY gelcoat repair kit to fix the bottom of your boat quickly and easily. Smoke Buff the surface with a white, medium-cut rubbing compound. In this picture the largest wet tooth is the 15mil tooth and the next clean tooth is the 20 mil tooth, the gelcoat is between 15-20 mils thick (.015-0.02"). Once spraying, move the gun in several parallel lines until desired thickness is achieved. Deals, Electrical Distribution, ProMariner ProNautic For a better experience, please enable JavaScript in your browser before proceeding. & Dock, Anchor Chains & Because styrene is heavier than air it will pool at the bottom of a mold cavity and slow down the cure of the gelcoat located in the bottom or lower parts of a mold. Boat, Boat Buyers Using a Gel Coat Thickness Gauge can help you avoid potential pitfalls associated with incorrect amounts of Gel Coat being applied during the spray process. Fiberglass Swimming Pool Resurfacing Incorrect Surface Preparation Gelcoat will only adhere to fiberglass, previously cured gelcoat, or polyester resin. WebA. Plumbing, Anchor Ensure that your mold surface is properly prepared and has a Class 'A' finish. MEKP hardener is required for each color and is sold separately. Gelcoat is an epoxy or polyester resin-based thermoset polymer that is usually applied to the boat exterior during the fiberglass molding process to give a smooth, shiny appearance. Use 2-inch 3M Scotchbrite Painters Tape to create a 1/16th-inch perimeter around the damaged area. Accessories, Boat This time use about three parts of patching additive with one part gel coat. It must be buffed and painted with spray paint or a gel coat wax protective coat. p.s. Contains wax so additional patch aid additives are not required. I used marinetex. 3 What is the difference between gelcoat and resin? Boat, Sell A Finally our #120-A Gel Coat Cup Gun is a dump gun. Shop Gel times for gel coats and resins vary a great deal depending on the exact resin and the ambient temperature. Weekdays 8 a.m. to 5 p.m. One of our resident experts, Tom Clark, has stated that he strongly prefers polyester resin. Most people confuse stiffness and strength. Total thickness should be 15-18 mils. What's the difference between laminating gel coat #105675 and One Step Finish Gel Coat #105671? Quick question for you. Sockets, Marine Electrical Determine the gel coat batch size for the size of the repairapproximately 80 square feet per gallon of gel coat (20 sq ft per quart). Phone: (800) 838-8984 Login, Boats 1st coat is still a little sticky can i leave it on?getting the pva friday,found a local boat place that sells it,can i give it another coat then how long before i pva it? This further assures that no uncatalyzed material is clinging to the sides of the pot. Clean up the entire area with acetone. Can ceramic coating for boats be applied to all boat materials? If the gelcoat is applied to thin, it will not reach the temperature needed and will not cure fully. To prevent this, make sure to set proper pressure, based on the thickness of the gel coat and the viscosity (typically, 40 to 80 psi.) gelcoat Spray the first coat of this mixture over the previously sprayed area. For many do-it-yourselfers, applying gelcoat can be quite intimidating. Fibre Glast offers over 900 colors of gel coat for your composite parts. Buff and polish your new gel coat to a professional-looking finish. Acessories, Fishing Outriggers & We recommend a mix ratio of 1:8 (1/4 pint of rubber particles per quart of gel coat) if you are using the direct mix application. Hardware, Boat Seat These can also occur if the gel coat is not properly cured prior to lay-up. This versatile Gel Coat Touch-Up Gun allows you to adjust the spray width and volume to tackle small and large surface area jobs. Any technique thoughts would be most appreciated. Copyright 2019 IBOATS. Locks the surface so acid rain, bird droppings and pollen and more cannot penetrate the gelcoat/paint. Accessories, Marine Electrical Matching the repair color to the color of the boat is probably the hardest part of the entire job. that gives your boat its glossy appearance can be repaired with a little patience and the correct technique.