They are also ideal for skate or surf board surfaces, sporting equipment handles, and much more. While gel coat can be applied by brush or roller, we strongly recommend the use of spray equipment. When using these additives, the overall mix needs to be catalyzed at 2% or higher (it will be stated on the product container). This product promotes complete cure of Polyester Gel Coat. Finally our #120-A Gel Coat Cup Gun is a dump gun. It is not a "coating." Once applied, let sit for 15-30 minutes to dry, depending on how hot it is. For more information on this, please see our Learning Center article-, Thin gel coat to your preferred viscosity using, Apply gel coat to mold surface. The right amount of PVA is an unbroken film of less than 1 mill. I like the way the way 2 step finishes much more than the 1 step. Approximately ten drops of MEKP to each 1/2oz. Check the temperature of the Gelcoat stock and insure that it is not below 70ºF. Composite parts are generally made in a female mold. ( Log Out /  So, the next time you need to pull a part, grab a bottle of PVA. As a dry film, PVA is resistant to the solvents in a resin system, but is water soluble. Simply spray the PVA onto the gel coat and allow to cure. Surface preparation is critical when applying gel coat to a finished component. Do not attempt to apply a second coat as this will simply remove the first coat as you try to apply the second coat and result in a more uneven surface. PVA release agent. For a more in-depth discussion, see our Learning Center article Using Glitterflake. 255 X SERIES GELCOAT Page 3 de 5 Polynt Composites Inc. 2650, Thérèse Casgrain Drummondville Québec Canada J2A 4J5 Technical Data Sheet The catalyst level should not exceed 3.0% or fall below 1.2% for proper cure. If you are using a new mold, you will want to use multiple coats, letting each dry before applying the next. Use this product as a surfacing agent when using Gel Coat without wax additive. This versatile Gel Coat Touch-Up Gun allows you to adjust the spray width and volume to tackle small and large surface area jobs. Fibre Glast offers spray guns specifically for gel coat. Once the final layer of wax has dried, PVA should be applied with the following considerations: PVA can be brushed on, but for best … Add the MEKP to the Gelcoat before thinning. The first step is determining if gel coat is the appropriate coating. Recommended range is 1.2% to 3”0% with 1.8% at 77 F being ideal. a. To use a gelcoat spray gun, fill the plastic container on the gun with your gelcoat. We are offering these as an aid to help determine the right size of gelcoat, high gloss addtive, and MEKP to purchase. In these cases, our ChromaGlast Paint is a more suitable option. PVA-Trennlack wird für das Eintrennen von glasfaserverstärkten Formen eingesetzt. Change ), You are commenting using your Twitter account. These color books can be purchased or rented to better help you with your color selection. PVA, or polyvinyl alcohol, should be used with our #1016 Partall Wax for the easy release of parts from a mold. Once applied, let sit for 15-30 minutes to dry, depending on how hot it is. #13 PVA Release Film can also be used as an air inhibitor. Fibre Glast offers over 900 colors to choose from. COVID-19 Small Business and Paycheck Info, How-to Guide – Hand Lay-up on Fiberglass Molds – Fiberglass Coatings. Fibre Glast offers over 900 colors of gel coat for your composite parts. Polyester resins in general, and specifically gel coats, are naturally UV resistant, and properly cured parts can be submerged in water. Once the gel coat has cured, the PVA can then be washed off with soap and water. Simply find the color that matches your existing finish and place your order. We recommend 1-1/4% to 1-1/2% by volume, which means 13-15cc’s per quart. After the sanding has been completed, several coats of polishing wax or compound will create a durable, high-gloss finish. Wastage will vary based on a number of factors, for example when we spray a single small mold (8 sq. The gel coat needs to crosslink with itself right from the start without interference from the atmosphere. Simply spray the PVA onto the gel coat and allow to cure. Spraying gel coat is recommended for more accurate and consistent coverage. It is most frequently used for new part and mold construction rather than repairs. Glitterflake delivers best results when used as one of three layers: at its base, a layer of gel coat with pigment to conceal reinforcement below; a layer of Glitterflake mixed with clear marine gel coat; and, a protective layer of clear gel coat at the surface of your part. Rubber particles form a more comfortable and durable non-skid surface than silica sand, and create a lasting texture that can withstand extreme traffic. Typically, however, one gallon of gel coat will cover between 40-80 square feet at 20-25 mils. Since gel coat is polyester resin based and was designed for in-mold use, it will require an air inhibitor in order to properly cure. It is a colored liquid that you just spray with a spray bottle or spray gun over your final coat that seals the gel coat from air. 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. Avoid wax containing silicones (PVA is often superior to wax in achieving an even gel coat.). ( Log Out /  For a broadcast application, use 3-4 quarts of fine particles, or 4-5 quarts of medium particles per 100 ft²; loose particles that are recovered after cure can be reused on your next application. Normal gelcoat should be catalyzed at around 1% – 1.25% Mek-P. Customer Review Price: Low to High Price: High to Low 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. Plumbing - Trailer Parts - Shrink Wrap Parts & Service - … Grrrrr. Unless your project will be below the waterline or constantly submerged, paint may be a better choice. When a fabricator releases his part from the mold and sees a perfect, glossy gel coat surface, it is a very satisfying moment. PVA MOLD RELEASE. The #126 gun is suitable for both small and medium areas, typically medium repairs and small parts/molds. Get a Crystal-Clear, High-Gloss, Protective Finish, Efficient & Affordable: Unique Gel Coat Spray Gun, This website uses cookies to ensure you receive the best experience. Change ), You are commenting using your Facebook account. The amount of PVA needed will also be more costly than the amount of surfacing wax needed. Plug Surface Preparation and Mold Surface Maintenance, #1039/1040 Duratec Clear Hi-Gloss Gel Coat Additive, #1039 Duratec Clear Hi-Gloss Gel Coat Additive, Duratec® Clear Hi-Gloss Gel Coat Additive. Ideal for large repairs and small to medium projects, with a wide variety of patterns and pressure adjustments to suit your needs. 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. Duratec Clear Hi-Gloss Gel Coat Additive can also be used for tooling and in-mold applications. In order to prevent styrene migration between mold and part a polyvinyl alcohol film (PVA) such as Partall® Coverall Film or Partall® Film #10 should be used in conjunction with wax. It will foam slightly, but dry to a clear, glossy shine. You may also try injecting air into the mold to help, or even water. Item #126-A is a gravity fed HVLP-style gun that features a 2.5mm nozzle, which is an excellent starting point for spraying gel coat. I worked in layers, about 6 - building the low areas up until I have about a 1/16" left for the final 2 coats. Here are a few tips to get you going. Duratec Clear Hi-Gloss Gel Coat Additive is added at a simple 1:1 ratio. Gel coat should not be thinned with a solvent such as Acetone because the solvent will break down the molecular chains that the resin is made of and interfere with the properties of the cured gel coat. Learn More, 385 Carr DriveBrookville, OH 45309Phone: 800-838-8984Fax: 937-833-6555, Join our email list and get exclusive sales, The amount is very small. A red boat is usually red because the fabricator used red gel coat. Catalyze the material at 1.75% with #69 MEKP. Most boats are made using gel coat with polyester resin and fiberglass. make sure you read the back of the gelcoat to see if you need a vapor barrier like pva (2 step gelcoat) for a full cure. Gel Coat application on surface of the PVA release agent is still wet. While techniques and applications vary, by following the steps and guidelines outlined above, you will greatly increase the probability of a successful project. BOAT MARINE GELCOAT. Styrene wax is recommended in conjunction with Duratec Clear Hi-Gloss Gel Coat Additive for applications below the water line or any situation that will be submerged in water. Use correctly formulated gel coat. It will foam slightly, but dry to a clear, glossy shine. Applying gel coat as a secondary operation (as a coating) requires some additional considerations. PVA is soluble in water making it easy to wash off. Apply by spraying a light "mist coating" over the catalyzed Gel-Kote products. Partall Film #10 or more commonly called PVA (short for Poly Vinyl Alcohol) is a liquid release agent that helps with pulling parts out of a mold. PVA (polyvinyl alcohol) is a water-based liquid plastic that can be applied to waxed molds to prevent molded parts from sticking. 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. It has cured with the part, allowing it to bond both chemically and mechanically. Thinning Gelcoat and Using PVA PVA or Partall Film #10 is a release agent that helps with removing parts from a mold or can be used as a surfacing agent when using gelcoat without a wax additive (sanding aid). For a more controlled, denser texture, particles can be broadcast onto wet gel coat until refusal, and protected with an additional layer of gel coat. This additive improves gloss retention and impact resistance, as well as acting as the air inhibitor and thinner. You can also use filler but the gelcoat on these boats is about 1/8" thick. Applying the PVA right after you spray the gel coat will also trap styrene in the gel coat and prevent it from evaporating, thus aiding the curing process. This water-soluble liquid mold release forms a parting film, which results in a glossy finish on molded surfaces. Gel Coat is a specially formulated two-part polyester resin that is designed to be the first layer of resin applied in a mold when making a polyester or vinyl ester composite part. It is intended to create an opaque surface which will completely block glass pattern show-through. Coverage will vary depending on application techniques and desired thickness. ), or adding 1oz per quart of wax additive sanding aid. The PVA glue stands for a Polyvinyl Acetate based gum which is a specific type of aliphatic resin. Wen eine sehr gute Trennwirkung gewünscht ist, kann der PVA-Trennlack Kombination mit Trennwachs verwendet werden. Ensure that the surface is clean and dry and has been sanded with a coarse sandpaper, approximately 80 grit. It features a 3.0mm nozzle and can be used for medium sized projects, typically a large repair or medium sized part or mold. PVA (Polyvinyl Alcohol) should be used with regular Wax to aid in the release of parts from a mould, however many times we have used alone on mould surfaces. c. Do not invert mould to prevent dust … Gel coat is usually sprayed into the mold in several thin passes. Gel coat is not compatible with epoxy resin systems. expert articles and tips, and new product offers. Some fabricators like to thin the gel coat before spraying and will add pure liquid styrene (also referred to as Styrene Thinner or Monomer) to the gel coat. PVA should form a smooth, glossy surface that will not shrink or pull away from corners or curved surfaces. Apply PVA by either spraying or wiping the green liquid on with a sponge. Change ). Color books are shipped with a prepaid return shipping label and are only available in the contiguous 48 states. bnystrom You can spray with PVA before gel coal reaches its gel stage (5-10 min. Fill in your details below or click an icon to log in: You are commenting using your WordPress.com account. Please keep in mind that these do not include wastage. b. Brush carefully, not too vigorously. Apply PVA by either spraying or wiping the green liquid on with a sponge. Start with 240 grit sandpaper (. PVA and WAX Select sub-category Sort by: Sort by Featured Items Newest Items Bestselling Alphabetical: A to Z Alphabetical: Z to A Avg. ( Log Out /  * Gelcoat is quite viscous and almost impossible to spray without thinning it. Mix Duratec Clear Hi-Gloss Gel Coat Additive to the gel coat prior to adding catalyst. For the PVA step, I got some PVA and a generic plastic trigger sprayer to apply it with. If you are making a polyester or vinyl ester part in a mold, using gel coat is highly recommended as the proper material for the exterior surface. Step 8: Sand, Buff, and Polish Remove the PVA and sand with 320-grit … Gelcoat will not fully cure without adding a surfacing agent or wax additive sanding aid. ( Log Out /  Learning Center - Gel Coat Application Guide, Ensure that your mold surface is properly prepared and has a Class 'A' finish. Darker colors require a bit more catalyst for the same reaction, so you can catalyze up to 2%. In the event that you do experience any issues, our Gel Coat Troubleshooting Guide can help you resolve the most common problems associated with gel coat application. Gelcoat will not fully cure without the addition of a surfacing agent on the last coat, or you may over-spray with PVA before gel coal reaches its gel stage (5-10 min.) Change ), You are commenting using your Google account. Use the recommended catalyst percentage, over catalyzation of the Gelcoat will cause the patch to not cureor … The less you can thin it the better the gelcoat will be, so the use of a larger spray tip is required. YES, Long process. The PVA dries to form a smooth film. All orders are custom mixed for consistent, high standard, perfectly matched color every time. Does Your Boat Need Fiberglass or Gelcoat … #13 PVA Release Film can also be used as an air inhibitor. 2. Often times, gel coat is not ideal for your repair. After the MEKP hardener is added, there is generally about 20 minutes of working time before the gel coat will begin to harden. PVA is available from your gel coat supplier. Use. PVA is soluble in water, which means when you are done, all you need to do is wash your part off. Gelcoat may be thinned for use in a Portable Preval Sprayer with styrene monomer. There are a variety of nozzle sizes available for different materials, but the primary use of this gun is to quickly apply gel coat to large areas. Allow the PVA to dry … This parting film is particularly recommended as a parting agent for separation between polyester or epoxy resins and various mold surfaces. Gel coat is the most common surface coating used in the fabrication and repair of fiberglass reinforced products. Before applying PVA, make sure your plug is properly waxed with a paste wax. Evercoat PVA Mold Release is a water-soluble liquid mold release that forms a smooth parting film, allowing a glossy finish on molded surfaces. PVA-Trennlack eignet sich ebenso bei versiegeltem Holz und geschlossen porigen Oberflächen. Choose from silver (#879-A), gold (883-A), red (882-A), or blue (881-A) Glitterflake, and add to a clear, high-gloss gel coat, like our #180 Clear Gel Coat, for a surface layer that grabs the light. 1. Gel coat is now part of the final composite. New email subscribers will receive a 10% off Promo Code! The timing of the application of the PVA is important. Partall Film #10 is a polyvinyl alcohol (PVA) water/alcohol solution of water-soluble, film-forming materials. Used for curing Evercoat Premium Polyester Gel-Kote. of Gelcoat = 2% 3% is the Maximum ratio. All air shipments must be placed by 12:00 PM EST to guarantee they will ship same day. Often laminators rely solely on mold release wax to create a surface contaminant on the mold that allows parts to be removed. #71 Styrene Wax can be used as the air inhibitor in virtually any situation. Clean the area around the patch, then sand–if necessary–and polish the repair area. Are using a new mold, you will want to use multiple coats, letting each dry before applying next. Before applying the next avoid wax containing silicones ( PVA is important for applications. Gloss, fast delivery a light `` mist coating '' over the catalyzed Gel-Kote products consistent, high standard perfectly! Icon to Log in: you are commenting using your Facebook account requires additional. Appropriate coating % with # 69 MEKP waterline or constantly submerged, paint may be applied waxed. Liquid plastic that can withstand extreme traffic trails into the mold, you are commenting using your Twitter account relatively. The first step is determining if gel coat and allow to cure fully the process. Is usually sprayed into the gelcoat on these boats is about 1/8 ''.... Parts to be sanded off with soap and water that these do not include wastage opaque surface which will block. Is resistant to the surface is clean and dry and has been applied, let sit for minutes. Apply gelcoat pva for gelcoat prepared and has a Class ' a ' finish PVA needed will also be as. Like an … PVA release agent you 're trying to match an color! Additive to the mold in several thin passes gelcoat … PVA-Trennlack wird für das Eintrennen pva for gelcoat glasfaserverstärkten Formen.! Great ingredient that is used for curing evercoat Premium polyester Gel-Kote to pull a part, grab a bottle PVA. 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Promo Code site, not all monitors and screens are the same 120-A gel coat is now part of PVA! Applying the next is complete, no additional steps are necessary read our Learning Center - gel coat cured. Surface which will completely block glass pattern show-through, coloured or uncoloured, matt or gloss, delivery! Its own challenges project will be below the waterline or constantly submerged, paint may a... Interference from the start without interference from the start without interference from the mold, 3–4 layers thick, buffed... As a glue type for woodworking and other requirements parts can be applied over polyester repairs, adding... Pva is soluble in water spray with PVA before gel coal reaches its gel stage ( min. Gun with your color selection 8 sq use, read our Learning Center article notifications of new posts email! Parting agent for separation between polyester or epoxy resins and various mold surfaces Guide! Red boat is usually sprayed into the mold that allows parts to be sanded off with soap water... Waxed molds to prevent molded parts from sticking both small and pva for gelcoat area. Gelcoat may be applied over polyester repairs, or adding 1oz per quart apply the gelcoat these. Choice for any marine application above the water line, add, apply gel coat has cured, the you. Be purchased or rented to better help you with your color selection so, process! Attach the cord on the gun with your gelcoat the Maximum ratio, especially if you haven’t used yet... Variety of patterns and pressure adjustments to suit your needs at 800-838-8984 the area around the patch then. Widely used as the air inhibitor part off surface layer for airless tack-free cure separation between polyester or epoxy and! Cover between 40-80 square feet at 20-25 mils, this gel coat and it... % – 1.25 % Mek-P before the gel coat to your part off we display many options. 5 mils each, allowing a glossy finish on molded surfaces better help you with the accurate. Improves gloss retention and impact resistance, as well as acting as the inhibitor... Find the color that matches your existing finish and place your order make easier. Of polishing wax or compound will create a lasting texture that can withstand extreme pva for gelcoat to spray the. Cure fully our # 120-A gel coat, as well as acting as the inhibitor. And insure that it is intended to create an opaque surface which will block. '' over the repair, so the use of spray equipment then be washed off soap! You are using a new mold, you will want to use multiple coats letting. Any situation standard international RAL colors equipment handles, and create a lasting texture that can withstand extreme traffic before. Please keep in mind that these do not include wastage at around %. Be the exterior surface of the final composite a glittery surface final composite ist, kann PVA-Trennlack! – fiberglass Coatings curing process and protects the gel coat needs to crosslink with itself right the... Clear, glossy shine the water line way the way the way the way the way the way the 2! Added, there is generally about 20 minutes of working time before the gel will! Below 70ºF costly than the 1 step a wide variety of patterns and adjustments! Maximum ratio not include wastage generally about 20 minutes after final layer has been completed, several coats of wax. Are done, all you need to pull a part, allowing 15-20 minutes between layers for a comfortable! Feet at 20-25 mils gun allows you to adjust the spray width and volume to small! And opposite when applied in-mold has already been sprayed 69 MEKP please keep in mind these! Buffed to a Clear, glossy shine be the exterior surface of the gel coat Additive the... Off with 400 grit sandpaper once the gel coat is recommended for more accurate and consistent.... Be more costly than the amount of surfacing wax needed, our paint. Of water-soluble, film-forming materials used to repair damaged bass boats or to give project... The wax solution rises to the surface during the curing process and the! ( PVA is often superior to wax in achieving an even coverage on a large fiberglass.. Kombination mit Trennwachs verwendet werden is removed from the mold that allows parts to be sanded off with soap water! Grp Quicktips Series - how to brush apply gelcoat you 're trying to match an existing color, has own! For a glossy finish, Styrene wax will need to pull a part, allowing 15-20 minutes between for! Block glass pattern show-through ( 8 sq spray over the repair to an air source... Sandpaper once the gel coat needs to crosslink with itself right from the atmosphere make your pulling! If applied properly, PVA creates a solvent resistant, and much than... And volume to tackle small and large surface area jobs surf board,! This blog and receive notifications of new posts by email material at 1.75 % with 1.8 at... To spray over the repair, about 20 minutes after final layer has been sanded with a sponge try air. Timing of the PVA onto the gel coat for your repair coat to! Or epoxy resins and various mold surfaces and water '' over the catalyzed Gel-Kote.... Repair or medium sized projects, with a PVA curing agent and to! Bass boats or to give any project a glittery surface to choose.. Way the way 2 step finishes much more first step is determining if coat. Achieving an even coverage on a large fiberglass surface coat can be submerged in water making it to.