Verified Purchase. It will take a minimum of two coats of gelcoat if you are changing colors. Working outside, on saw horses, with the canoe at waist level – wash your canoe, scrub off any of the green slime especially … It is designed to provide a cosmetic outer surface on a composite product and to provide weatherability for outdoor products. As with all our products, if you have any questions, we are here to help! Whether a composite needs to be attractive or functional, getting the right surface finish is vital to a component’s suitability for an application. Gelcoat needs to be applied relatively thin. Boats that already have gelcoat, fiberglass, or polyester resin surface do not need any additional steps before repairing. Polyester is the traditional material of choice but again boat builders are looking to change to epoxy resins in order to reduce weight and styrene emissions. You will need to use another paint brush, applying the finish straight from the tin or tube and then wiping it thinly across the whole surface, Quickness of action is important here, as the finish will dry rapidly. On the outside of a pipe or profile, veils have other uses. Use to fill gouges, chips, scrapes and deep scratches in the fiberglass gel coat. Spraying with Clear water?? The product cures to a hard finish and does not require Evercoat Mold Release (#105685) to attain a fully-cured surface. Every 10’ or so, you will want to clean your pad with a spur or with some air to ensure pieces don’t scratch your surface. Start by sanding the surface with 150 grit or lower sandpaper. The gel coat has to be left to thicken before processing can continue this stage is not always necessary using veils, which means the moulding process does not take as long to complete. The change is coming about mainly in the production of racing yachts, and in particular, one design series boats. Applying the Gelcoat 1. 462 in stock Be sure to have a plan of attack for applying your gelcoat. Wear protective gear. Too thin a coating can result in undercure of the gel coat. Begin wet sanding with the finest grit that will remove orange peel in the re-sprayed area. Change ), You are commenting using your Twitter account. From then on, start going up to 400, then 600, and finally 800 grit sandpaper. 3M™ Perfect-It™ Gelcoat Light … Dried hard overnight in 90 degrees weather. It’s best to do a 4’ by 4’ area and go from there. Can gel coat be applied over epoxy resin??? The gel coat will cure to a hard finish and will not require Evercoat Mold Release (# 105685) in order to attain a fully cured surface. Methyl ethyl ketone peroxide (MEKP) is a catalyst used... 2. It incorporates pigments, additives and a substance called Wax Styrene. Sand, paint, or apply gelcoat upon full cure. email:, Mon to Fri 7:00am - 16:30pm You should now be able to apply your gelcoat repair paste. They found a process, that did not require you to coat the epoxy, just a cleaning process and time.. I’m most too damn simple to worked, but all results showed for a mechanical bond on pat and even surpasses the polyester and vinyl Ester resin bond with gelcoat.. not by much, they also test chipping, feathering and a few other approaches.. it all started with a customer.. who found a way.. .. you can find the link on their webpage, and pictures of the test and the independent test.. Consumers and OEMs will always be looking for better products and emerging applications will have different needs. We are ready to gelcoat! Check that the repair is even and level, or else it can crack … First thing you want to do is look at the surface you want to apply gelcoat to. Next, thoroughly clean the surface with a solvent like acetone. But keep in mind for older boats, a repainting might be in order as well. Decide how many coats of … Gel coats are presenting a serious stumbling block to this change. Too thick a coat can crack when flexed. Your Selections: Remove Marine Maintenance and Repair Remove Compounds, Glazes & Buff Pads Remove Gelcoat Finishing System Remove Marine Compare up to three products: Compare. Thanks, P.s. Resin and gel-coat manufacturers are constantly trying to keep up with these demands, and several have brought out low emission products that promise to reduce emission levels without compromising on surface quality. Our passion is perfection. tel: 010 030 0180 If you want a beautiful, glossy shine, use a machine glaze and then two coats of wax, and you will have a beautiful finish that any professional would be envious of. 3M Gelcoat Finishing System. Once applied, you want to wait about an hour and a half, for the gelcoat to set. Having a resin-rich layer on the outside of a product also provides very goods resistance to the external effects of the environment and UV radiation. Step 1: Identify the Boat Finish Gelcoat cannot bond to a painted surface, so it is vital to identify the boat finish before beginning repairs. Refer to the catalyst chart on the side of the can, or you can find one HERE. The exterior of most RVs is made with fiberglass and coated with a gel coat finish. Applying gelcoat over an existing (fiberglass) gelcoat finish is a relatively straightforward process. Applications are diverse, and range from anti-corrosion tanks and pipes to ultraviolet (UV) resistant facade panels or pultruded profiles and sports equipments such as skis and snow boards. Two-part polyester resin for use as a final or finish coat over laminating resin. Once the surface is clean, you want to get going pretty quickly; if the surface sits for any extended amount of time, you will want to re-clean the surface. At this point, you can use an 800 grit compound to compound the gelcoat. I have a couple of questions to ask to better help you. Many of our customers are hesitant to use it, thinking it’s too complicated or they think they can’t end up with a good finish. x 1/2 in. Ideal for High Volume Jobs THE RESULT. If you decide to roll on the gelcoat, be sure to use a solvent-resistant 1/8” or ¼” nap. When the surface is clean, prepare to begin the gelcoat application before dirt particles or dust start to accumulate again. It can be used to fill gouges, paint chips, finish scrapes, and deep scratches in … After many years outdoors, an RV's fiberglass outer skin will inevitably start to look a little bit faded. This premium finishing compound removes light gelcoat oxidation, fine sanding scratches, and swirl marks. Fill in your details below or click an icon to log in: You are commenting using your account. Ideally the layer should be between 0.25-0.5mm (600-800gsm of material) thick. 3. Steel Blue is a dye you wipe on. Combine gelcoat and methyl ethyl ketone peroxide in a bucket. Mix your gelcoat with the hardener as directed on the container. Gel Coat: A common surface finish for FRP composites is gel coat, a specifically formulated polyester resin that is applied to the mold surface prior to laminate build-up. isophthalic polyester gelcoat. x 3/4 in. Gelcoats used on large structures such as boat hulls are sprayed or brushed on to the mould and allowed to cure before the rest of the product is laid up. If you are using our brushable gelcoat, you will want to let it sit overnight to ensure it’s completely cured. Apply the first coat. You want to use a buffer that turns at 1600-3000 RPM’s. ( Log Out /  Like what’s gelcoat for to start. It’s the first coating in a mold. Wetsand with a block and buff to make it go away. From fiberglass boat finishing services, gel coat refinishing and full-body painting to wicked overhauls and extreme restoration, we are here to help you get where you want to be. If the surface is already covered with gelcoat, or if the surface is a fiberglass, or polyester resin, then applying gelcoat will be a snap. Painted boats will need to have the paint removed before applying the gelcoat. Our superior craftsmanship and acute attention to detail bring a level of artisanship to … Epoxy laminates aren’t generally compatible with traditional polyester gel coats and the chemistry does not yet exist to create an epoxy gel that is sufficiently waterproof and light-stable and can retain its glossiness for long enough. Smooth, defect-free, high gloss finish from a heavily weathered surface. Gel coat is the most common surface coating used in the fabrication and repair of fiberglass reinforced products. Pour some wax onto a soft cloth or foam pad. We have two types of gelcoat; the brushable and the standard. Let gelcoat cure for at least one to two hours. The wax, or Sanding Aid is an additive that allows the gelcoat to dry tack-free. We have technical information available on various fibreglass products. With gelcoat, we recommend at least 2 coats. This works in three ways. Kevin, west system publish a few articles and test results recently on gelcoating over their epoxy, they ran though a lot of independent and then self test and published the numbers and results and was surprising, even shocked them.. The product cures to a hard finish and does not require Evercoat Mold Release (#105685) to attain a fully-cured surface. As it ages, fiberglass oxidizes and loses its gloss, regardless of waxing. For boat hulls it is also important to ensure that the coating is fully cured with a good bond to the underlying laminate before it is put into water to prevent blisters forming on the surface. Stage 1: CUT. Properly applying gelcoat is the key to a good finish. So, gelcoat is used as a sealing, asthetic coat. Smooth, defect-free, high gloss finish, restoring colour to the oxidised or lightly weathered surface. At 70 degrees, you get your 15 minutes, but at 90 degrees, you only have about 5 minutes. The gelcoat with no wax, brushable, added pigment, let sit for 18 hours.. trying to sand it and it just gunk up my sanding disk each time.. Refinishing a gel coat, for instance, can be relatively pain-free if you have experience and the right tools at your disposal. Please note, this process will not fix deep gauges and missing pieces of gelcoat. So, we are here to provide a step-by-step guide on how to properly apply gelcoat. It produces a high gloss finish ready for wax. To overcome this, a RTM veil has a needled, open structure to prevent the resin being blocked as it flows through the mould. Secondly, using a veil creates a resin-rich layer, which acts as a chemical barrier. Be sure not to use foam rollers, as they tend to leave bubbles. Your first coat will simply consist of the gelcoat and the MEK-P catalyst. 5.0 out of 5 stars Excellent finishing gelcoat that does not need to be covered to cure hard. A marine repair paste will become dry very quickly, sometimes in a few minutes, so you will have to move towards the wetter areas, taking care not to mark the surface with brush strokes. As traditional gel coat systems are not currently an option, in-mould priming coats are used instead. You can’t apply gelcoat directly to Epoxy Resin. Used Cabo-sil to thicken it, and applied it. Too thin and the surface will wrinkle, too much and it will sag. Gelcoat or 'Gel Coat' is a material used to provide a high-quality finish on the visible surface of a fibre-reinforced composite. The amount is very small. Mainly, they provide a smooth exterior surface but they can also be used to squeeze out excess resin to ensure a high glass content in filament-sound products, or to prevent abrasion of the mould by the glass fibres on the surface of a pultruded profile. For applying your gelcoat, you can either roll the gelcoat on, like paint, or you can spray it on. Going underneath the gel coat for a full repainting is a highly involved DIY project that can sometimes require the assistance of a professional. during sanding. Applying Wax to Restore the Gelcoat 1. Gelcoat is formulated to be UV protective and stable against harmful chemical reactions. This was just a test, and also to fill scratch and build up the bow edge before I spray gelcoat next week. The wax, or Sanding Aid is an additive that allows the gelcoat to dry tack-free. One Step Finish Gel-Kote is a non-run, non-sag formulation of flexible polyester resins to … A number of process-specific veils are on the market. Two coats are usually standard. Sat 9:00am - 12:00am. The chemicals in wax can have a strong odor and getting any in your eyes can cause serious... 2. Change ), You are commenting using your Google account. The automotive market has its own challenges to overcome. Once you don’t see the blue dye anymore, you know you have properly sanded everything. Print through, where the reinforcement material is visible from the surface of a composite, must be avoided. If you aren’t sure how thick, pick up a mil gauge. Once applied onto a hull, this adhesive-like material dries into a hard, shell-like casing. You can get gelcoat with wax or without in certain cases. And in the manufacture of pipes or tanks the insides needs to be smooth to promote the flow of liquid and provide a barrier to protect the underlying materials from corrosion. It is easily applied with a brush, roller, or sprayed to provide a smooth, non-porous high gloss finish on many surface types such as steel, concrete, composites, eps foam and wood. Add to compare Compare. Veil manufacturers and suppliers offer veils designed for specific composite manufacturing techniques, including resin transfer moulding (RTM), pultrusion and filament winding. Gel coat is a syntehtic, resin-based substance used to coat fiberglass surfaces. The definition of a good quality composite surface depends very much on your point of view. Nivitex have various guides available for the DIY person that will help you with your next project from costings on projects to using various fibreglass products for mould making etc. A gel coat should be sprayed in three passes for a total wet film thickness of 18 +/- 2 mils thickness. First, decide if you need one or two coats of gelcoat. For boat builders the finish needs to be waterproof and weatherproof as well as attractive. THE RESULT. ( Log Out /  It is used to create polyester laminates without mould, with a high gloss and non-scaly surface. Change ). Stage 2: PROTECT … Usually a little less than a 1/32 of an inch thick (0.5 – 0.8 mm), it’s bonded directly onto the surface of the fiberglass.