Mixing gelcoat for spraying. This is Quick Tip 1https://vernese.
Mixing gelcoat for spraying If this is the case, follow the instructions that came with the gel coat gun. Mix daily 10 to 15 minutes. Mix gelcoat and catalyst: Pour the catalyst into the mixing container with the gelcoat and stir thoroughly using a clean stirring stick. Whether you’re a seasoned pro or a DIY enthusiast, understanding how these spray guns work and how to choose the right how to mix gelcoat gelcoat Gel coat spraying gun This HD-AM gel coat spraying gun has an extremely low weight of just 880 g and is easier to handle than a paint spray gun. You won't spray thick enough to matter. Since LEL doesn’t apply shaping air to the materials but rather relies on the two fluid streams impinging on one another to create a Jun 24, 2025 · This will increase your chance of break through, and send you chasing a larger and larger repair. The procedures may need to be adapted to the needs of the individual fabrication shop. Gelcoat is not only a nice resin that makes the vessel look nice; it protects the surface of the fiberglass and serves as a barrier to the absorption of water. Safety Precautions: Gel coat and fiberglass repair require personal contact with a variety of solvents, each having its own characteristics. Your gelcoat and workshop temperature conditions should be between 18 ° C and 25 ° C before use. You can use either a heavy-duty, reusable plastic cup or disposable paper cup for In this video, we explore the revolutionary $10 gelcoat sprayer that is changing the game for DIY enthusiasts and professionals alike! We'll dive into its features, performance, and how it can Sep 3, 2024 · Spraying gel coat on a boat can be challenging. 6. Getting to the point of applying your color matched gelcoat is one of the last steps in finishing off your repair (s). Aug 18, 2009 · Evercoat Premium Gel Coat - Application Information Shop Gel Coat Gel coat is a polyester resin specially formulated with thixotropic ingredients for increased viscosity and non-sag properties. 3. Keep your boat looking new and protected with expert tips and step-by-step instructions. Applying gelcoat to fiberglass is simple if you have the right tools and take care to mix your gelcoat properly. Next decide if you want to use an aluminum, plastic or paper cup to house the gelcoat. Just spray so that the middle of the repair is higher than the surround, and the edges feather out slightly. 5 gallons of material at one time. In a video to come ill show my method for applying laminating gelcoat, with G200-6 Gel Coat & Resin External Mix Cup Gun T his unique sprayer works just like the G100, but features external mix for the catalyst. It’s like painting on window frames: […] Dec 17, 2024 · Gelcoat is a liquid that hardens to form a thick layer that's used to protect fiberglass and give it a shiny, smooth finish. Avoid contact with skin during mixing and spraying. Using the same nine different nozzles allows for the spraying of a wide variety of materials. The G200 Gelcoat Spray gun is a unique sprayer that works just like the G100 but features an external mix for the catalyst. While brushing the gelcoat has it’s advantages, it isn’t always the best approach. It incorporates pigments for desired color and contains additives for controlling flow-out, gel and cure times. For most applications, gelcoat should only be thinned with styrene (which creates the very recognizable smell that gelcoat and polyester resin emit). Find your external mixing gun easily amongst the 4 products from the leading brands (MVP, Carlisle, ES Manufacturing, ) on NauticExpo, the boating and maritime industry specialist for your professional purchases. Thinning the gel coat helps give it better flowability when spraying. Sep 25, 2024 · Save your vessel from rot and more! Spraying gelcoat is easy and adds a protective barrier to fiberglass surfaces. I teach you what to look for when spraying, how to adjust the spray, and how to apply it to the surface you're coating. Be sure not to overapply or use too much pressure; otherwise, it may cause pooling or uneven RS RS External Mix Gel Coat Gun with Tip Part Number: 258840 Innovations engineered into the Graco RS Gel Coat Gun are sure to make a difference in your production uptime. It’s lightweight, ergonomic, tool-less operation is available with internal and external mixing capabilities. Correct application of gelcoat is critical to get the optimum performance from it. For small patches such as chips, dings, scratches and small repairs I believe that it is the most Spraying Gelcoat: For best results spraying gelcoat, it is recommended to use a spray gun designed specifically for applying gelcoat and resins, such as the professional grade spray guns offered by FGCI and ES Manufacturing. Spraying Gelcoat Check color thoroughly before applying. Thinning gelcoat should only be done when it needs to be, such as for spray applications. Most high quality marine gel coats use ISO/NPG (Isophthalic/Neopentyl Glychol) resins Feb 11, 2022 · Will from Hold Fast Marine has been working hard on creating helpful content for DIY boaters. It thins the resin or gel coat. Catalyzing Gel Coat Equipment Graco’s Gel Coat equipment is the industry standard to reliably proportion and deliver molded fiber-reinforced plastics (FRPs) in open molds for a high quality end product. Oct 10, 2023 · Styrene Monomer Styrene monomer is added to polyester and vinyl ester resins or gelcoat to give it better flow while spraying with a gel coat spray gun or paint spray gun. In the video I mentioned that there were 2 common ways to do this; spraying or brushing. First check that the containers are damage free before opening them. If you have filled the gouges, you don't need to worry about gelcoat thickness when spraying. Apply gel coat in 4-5 layers at approximately 5 mils each, allowing 15-20 minutes between layers for a total thickness of 20-25 mils. Accurately add 2% of a MEKP initiator/catalyst to the patch (see table below). We will assume you have already read the article to learn about prepping the surface, sanding, and finishing the gelcoat. Gelcoats are based on a thermoset resin that requires an initiator and proper temperatures to cure thoroughly. Nov 1, 2005 · I'm doing a repair/resto job on an older ,small whaler and would appreciate any tips/tricks for spraying gelcoat. The external mixing system guarantees perfect ratio of the peroxide to the gel coat and causes minimal fog. In part 2 of the video series, mixing and application, we will show you how to prep the boat, mix the gelcoat and coloring, and applying it to The G200 Gelcoat Spray gun is a unique sprayer that works just like the G100 but features an external mix for the c. In this guide, you will learn how to spray gelcoat on your boat like a pro. . G200-6 External Mix Gel Coat and Resin Spray Gun. Learn the step-by-step process & discover how to automate it for best results. Nov 26, 2024 · Discover everything about gelcoat, from application tips to customization with pigments, and keep your boat in pristine condition. May 27, 2022 · ***Some gel coat guns mix the resin and MEKP as it is sprayed. Jan 5, 2011 · Spraying Gelcoat: For best results spraying gelcoat, it is recommended to use a spray gun designed specifically for applying gelcoat and resins, such as the professional grade spray guns offered by FGCI and ES Manufacturing. Learn about the essential materials, tools, and techniques required to apply gelcoat smoothly and effectively. Engineered with industry proven Graco components, Graco gel coat systems, such as the gel coat spray gun, are optimised for ratio stability with control components and long lasting seals for reduced Jan 8, 2023 · We are talking about a 30 foot catamaran mold here, and I really hadn't considered that maybe it's not going to be efficient to mix and spray gelcoat into the mold with a cup gun. Generally mix 5oz batches. How to Prevent Gelcoat Cure Problems Store and mix gelcoat at room temperature (70–80°F). A higher speed might be needed for the first 3 minutes to get material moving, then a lower speed so that there is just enough rotation and visual pumping that the material turns over but not enough to entrain air. Choose your preference: available in external mix configurations with either the ATG-3500 or TLN2-XG-300 Talon Gun. Adjustable spray angle to insure proper mix of catalyst with resin/gelcoat. Designed for use with MEKP, it is designed with a separate adjustment for catalyst volume, giving a typical range of between ½ and 4%. Gelcoat repair kits are a great way to get started with the process of fixing or repairing your gelcoat and getting a custom gelcoat match for your repair. Proven Graco pumps May 7, 2013 · 1. It's lightweight, ergonomic, designed for tool-less operation and fast, easy maintenance as well. So I wanted to get some peoples' opinions/recommendations on a fairly entry level but competent spray system, one that mixes the mekp at the gun. Both deliver versatile spray and impinge gelcoat performance. Thin with a small amount of acetone to allow for an even spray. This gun is perfect for the Where possible for commonly used colors, pre-mix the gelcoat and propatch solution in quantities enough for all repairs that day. Jun 10, 2024 · Learn how to repair and maintain your boat's gelcoat with our comprehensive guide. This professional grade sprayer works like the Model 100 but adds the convenience of external mixing. Before we start the spraying process, it’s important to know why you would choose gel coat over paint for your boat so you don’t get confused. Discover the best practices for using compound gelcoat to address scratches, cracks, and blistering, ensuring a polished and durable finish. When spraying, spray the gel coat on until it is approximately 18-20 mils (thousandths) thick. Keeping a consistent distance from the repair area with each pass, apply an even layer of gelcoat to the sanded area then allow to dry for 15-20 minutes. A good practice is to pour the mixed gel coat from the mixing container into Peval Product container used for application. Wear a vapor/particulate respirator (NIOSH/MSHA TC-23C). May 22, 2024 · This will help create a good bond between the old gel coat and new gel coat. Cleaning of the gun when changing colour is 5. We'll cover everything from surface preparation to mixing and spraying Jul 25, 2025 · Spraying gel coat is recommended for more accurate and consistent coverage. We found his recent Gelcoat video to be very helpful, as we are very familiar with the questions and mysteries that come with using and applying Gelcoat. To add styrene monomer, mix it thoroughly into the resin or gelcoat before the MEKP catalyst. You may either roll the gel coat on, like paint, or spray it on to apply it. com/2025/07/31/buy-me-a-coffee-%e2%98%95-or-%e2%98%95%e2%98%95/The key to QUALITY is CONSISTENCY! These tips will improve Wholesale/retail sales of composite and fiberglass materials, including epoxy, adhesives, carbon fibers, rethane foam, urethane casting rubbers Whether you're working on a small project or gearing up for industrial production, understanding polyester gel coat, tooling gel coat and how to effectively incorporate pigments, can significantly impact the quality and longevity of your finished product. MVP's Gelcoat systems and gelcoat spray guns can be configured for single and multi color to meet your production needs. 0% catalyst you have It may seem like a dark art, but spraying Gel Coat is a simple process with some basic technique and maintenance your HLVP Spray gun can last for years and give you trouble free service. Gloves are provided. Gel Coat Systems Graco’s Gel Coat equipment is the industry standard to reliably proportion and deliver moulded fibre-reinforced plastics (FRPs) in open moulds for a high quality end product. You’ll need to test spray at 20lbs, 30lbs, 40lbs and up upward to 60lbs while testing adjust your equipment to Sep 14, 2012 · Re-sand the area and clean thoroughly before reapplying gelcoat with the correct catalyst ratio and wax additive. When the streams collide a fan is created which is then directed at a mold so that your gel coat can be smoothly applied. Feb 19, 2024 · We get asked a lot of questions about applying gel coat so we thought we would offer this guide as a way to help you understand one of the best methods, gel coat spray guns. This Brushable Gelcoat can be applied with a brush and does not need any other additives except MEKP, which is included with your purchase. Mix gelcoat compound with hardener according to instructions, then pour the mixture into the Preval sprayer bottle. You can use either a heavy-duty, reusable plastic cup or disposable paper cup for This video focuses ONLY on the spray gun, and the application of the gelcoat. Gel coat spray guns are invaluable tools for achieving professional finishes in gel coating projects. Apply first coat: Use a paintbrush or roller to apply an even layer of gelcoat onto the prepared surface. Product Description Duratec 904-001 High Gloss Additive enhances gelcoat applications by eliminating wax and PVA, providing a smooth, paint-like spray with excellent durability. Also have considered painting it, but Feb 3, 2011 · Typically gelcoat is catalyzed at 1. My preferred method is spraying the gelcoat, but this is the best method for something we're just going to sand later. 0mm tip for your sprayer the bigger the better Thin with Styrene or MEK they say 10% but reality is with your spray equipment you may need to go a little more (but you degrade the gelcoat some by thinning) I think you will be in big trouble if you mix / catalyze 2. Before applying gelcoat to your part best practice is to test the spray pattern. Learn how to do minor gelcoat repairs to your boat. How to Apply Gelcoat to Your Boat To maintain the look and sea-worthiness of your ship, Gelcoat is necessary. I go over some of the standard practices that pros use to get excellent results with e Learn how to mix and spray gelcoat with this step-by-step tutorial. Measure catalyst with graduated mixing cups for accuracy. 5 to 2% Use the 2. Use #122-A Gel Coat Thickness Gauge to ensure proper thickness is achieved. Add 12 drops of hardener per ounce of gelcoat you have mixed to catalyze the material. Gelcoat will not darken or change colors when it dries. This article will discuss how to apply the gelcoat with the brush and roller method. Find your gelcoat spraying machine easily amongst the 11 products from the leading brands (MVP, Binks, ) on NauticExpo, the boating and maritime industry specialist for your professional purchases. Follow instructions on the box for your gel coat gun. This is Quick Tip 1https://vernese. There are also specialty thinning products designed for gelcoat application. 2. Method of Application: Next, determine if you are going to brush, roll or spray your gel coat so you can prepare it for application. -Use a graduated mixing cup to measure the gel coat -If using a gel coat gun/spray gun, styrene monomer can be added up to 8% by volume to thin the gel coat. Engineered with industry-proven Graco components, Graco gel coat systems are optimized for ratio stability with control components and long-lasting seals for reduced maintenance. What to Use it for Ideal for achieving a high-gloss, durable finish on gelcoat surfaces, reducing porosity, and preventing yellowing and UV gl GELCOAT REPAIR 101 -A to Z How To Repair Chipped Gelcoat and How to Repair Gelcoat Scratches Easiest Way To Apply A Perfect Nonskid On Your Boat Using Alexseal Paint! Gelcoat Spraying Questions - Moderated Discussion Areas Hop to: Preparation of Cosmetic Spray Patch Repairs of Gelcoat This procedure has been prepared to provide general guidance on techniques and conditions that can give the best chance of achieving efective professional spray patch repairs. It can be added up to 8% by weight of the resin. Eye protection is required when grinding, drilling, sanding, and mixing. Next, mix the gelcoat using a low shear mixer and allow the gelcoat to stand for at least 10 minutes to regain thixotropy. For the most part spraying is something that I usually try and sway folks away from because of the mess, cost for equipment and experience needed to get a qu Apr 28, 2017 · LEL (Low Emission Laminators) Gel Coat Spray Guns LEL gel coat guns work by mixing the gel coat and catalyst from two different streams. Sep 15, 2022 · Professional Grade Exterior Gelcoat can be applied either by Spraying, Brushing or Rolling. Use wax additive in your final coat to achieve a hard, sandable surface. Keep away from heat, sparks Nov 11, 2025 · Re-sand the area and clean thoroughly before reapplying gelcoat with the correct catalyst ratio and wax additive. It’s available in internal and external mixing gelcoat spray guns. This will allow for a proper cure. For a more comprehensive guide on How to Apply Gelcoat, please read this article. This video goes over application tips and techniques for using a standard spray gun. Start your next project today! RS Gel Coat Spray Gun Innovations engineered into the Graco RS Gel Coat Gun are designed to increase productivity and reduce expensive material waste providing you more profits. The color wet is the color when dry. Feb 2, 2024 · Spraying gelcoat is a great way to restore the appearance of your vessel. Ventilation is required. Add 10 to 15 percent acetone to the gelcoat mixture to thin it for spraying. AT 70 degrees F and 2. We take you through the basics of gel coats as well as tips for applying. Our Talon Guns are available in both internal and external mix and feature advanced valve technology for precise pattern control. In this video, you'll learn how to spray gelcoat perfectly every time.