You only need to let the layers gel, i.e., you work wet on wet. Apply gelcoat until a layer thickness of 1000 to 1500 my is reached. gel coat is just thickened and pigmented polyester/fiberglass resin. I purchased some laminating gel coat and PVA from West Marine last week, and sometimes the gel coat will cure and sometimes it wont. Heat, cleaning compounds and abrasive materials can strip the gel coat off the cultured marble, dulling its surface. The fix is a solvent thinned eopxy primer like esp 155 which will firm up the surface and provide a good, fresh bonding surface. Applying gel coat correctly is of utmost importance to making aesthetically pleasing and long-lasting end products. Proper gelcoat application requires you apply your coats about 15-20 mils thick, Mil Gauge. When one of our customers has a problem with gelcoat not curing properly, it usually stems from one of the reasons below. Use Acetone for your cleanup. It not as simple as painting and can be somewhat difficult to work with. Correct application of gelcoat is critical to get the optimum performance from it. One of the most frustrating problems to deal with is a new application of gelcoat that refuses to harden and cure. Two days ago, the last application of gel coat I did was 2 coats on the underside of the lids. Gelcoat … Gelcoat is a dangerous, toxic substance used to waterproof, seal and bring a shine to things that are made out of fiberglass or wood. The last gelcoat layer is removed from its stickiness by adding a styrene-paraffin mixture, so that it becomes a topcoat and hardens without stickiness. Before applying gel coat paste, match the color of the paste with the color of the hull. Unfortunately, I have had mixed results with the gel coat portion. This article will list the materials required and the steps required to apply a coating of gelcoat to your RV and finish it to a high luster finish. Waxing your boat now will protect that like-new look and head off a time-consuming restoration project down the line. Once you’ve got the right color, fill the sanded down crack with a pigmented gel coat paste using a putty knife. Gel coat is typically the first layer of a part to be applied. But the real issue is UV damage which has broken down the resin and make for a chalking - porous - not good bonding surface. If gel coat is not applied properly it ultimately can increase the cost of the product made, as often is the case, cutting corners in this process will not prove to be worth it. Gelcoat is the coating sprayed up against a highly polished mold at the beginning of the fiberglass layup process. Gelcoat is a resin system that is filled with colorants and thickening agents and applied to a mold surface to form the cosmetic and weathering coating of a composite part. Getting to the point of applying your color matched gelcoat is one of the last steps in finishing off your repair(s). To restore the shine and protection of the product, apply a new coat of gel. In the video I mentioned that there were 2 common ways to do this; spraying or brushing.. About Gelcoat. Why? For many “do-it-yourselfers,” applying gelcoat can be quite intimidating. Just like other Polyester-based products, Acetone is the best cleanup material! Because unlike other owners, all you need to do is wash your boat and apply a quality wax. Allow the gelcoat to cure overnight and then lightly sand it and buff it for an outstanding shine! Apply Gel Coat Paste that Matches the Exact Color of the Hull. using a mil gauge. This may entail some testing to get the right gel coat color. 5. A gel coat is put on the cultured marble at the factory to give the product a shine and seal in the interior resins. Easy to paint. The paste with the color of the lids got the right gel coat color gel! 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