Pva Spray For Gelcoat

I have a $600 Sata set up that does not get anywhere near gelcoat. Should I filter the gel coat (purchased 2 weeks ago) through a paint filter before use, or is this unnecessary? 3. Alternatively you can buy a product called PVA which is essentially mold release wax and this can be sprayed over wet gelcoat to enable a proper cure. Which means it has to cure with out oxygen; that is, it can ONLY cure without oxygen. Gel Coat Application. All brass construction, with O ring. The prevail works great for spot repairs of gelcoat. ISO NP Gelcoats are high performance grade resins, based on NPG isophthalic polyester. Partall® Film #10, the original green parting film, is resistant to solvents and styrene yet is water soluble. step 1: prepare to spray 1. The PVA will dry in approximately 30 - 60 minutes (depending on the ambient temperature) and is then ready for the first layer of. Spray stripe coat as soon as possible. *Please note MEKP Catalyst sold separately. For added insurance, you could spray PVA over the gel coat to provide another way to seal out the air. Mechanic's Assistant: Sometimes things that you think will be really complicated end up being easy to fix. PVA Mold Release Typical Spray Gun If the PVA is applied with a spray gun, apply 4 or 5 mist coats at 50 PSI. o Makes gelcoat spray like paint o Can be blended 50:50 for air-cure or 25:75 to improve flow and. Step 2: Put down your base layer of gelcoat. this is a little tough to do by spraying,rolling it on,using the 2 colors it's available in,is the best method,this assures a full coverage - 10m,is the thickness of a matchbook cover - alternate coats of grey and white. Features: Allows you to spray finer mists or thinner (lower viscosity. Instead of PVA consider a product called Duratec High Gloss Additive. 1) Spray gelcoat, spray pva, then remove PVA and hope things worked out or otherwise you are dealing with orange peel. • Safe on painted, fiberglass, gel coat, colored plastic, glass, chrome and stainless steel surfaces. The gel coat is the first step in making the actual mould. Spray a light mist over the catalyzed Gel-Kote to fully cure the Gel-Kote resin and eliminate the tacky feel. This is a lovely entry-level gun that handled everything we put it through without a hitch. Gel coat thickness/mil gauge. PVA-release-lacquer can be used as a second release layer in negative forms, while release wax forms the first layer. The highest quality ISO NPG marine finish gel coat to permanently repair or replace original, high-glass finish. • Easy to spray from HVLP Spray Guns. Shop, read reviews, or ask questions about EVERCOAT PVA Polyester Curing Agent at the official West Marine online store. Fibre Glast professional-grade spray guns won't let resin set up in the gun. West Marine Laminating Gel coat is a good product. I picked up a pamphlet, at West Marine, by West System brand epoxy systems which tells me I can mix gelcoat with a clear low-viscosity resin that is not air inhibited so it will dry hard and tack free. It is colored to show you where it has already been sprayed. The pva-release-agent creates a release film that is comparable to an onion skin. classicmako. Our broad product line is the result of our sole focus on spray technology. The blend sprays easily, without orange peel. The gelcoat is pigmented resin, and gives the mold surface a harder, more durable finish. Is this OK or would you spray the wax afterwards?. Diese Silikone werden auch als Platin-katalysierte Silikone beschrieben. If spray bubbles are trapped in PVA film try higher air pressure. I picked up a pamphlet, at West Marine, by West System brand epoxy systems which tells me I can mix gelcoat with a clear low-viscosity resin that is not air inhibited so it will dry hard and tack free. All this spray talk makes me glade I DON'T spray gelcoat for small repairs (generally less than a quarter size, but sometimes larger, up to dollar bill). In this case leave well enough alone or the area may need to be sprayed. Discussion substitute for release agent? Composites Fabrication. PVA Mold Release Typical Spray Gun If the PVA is applied with a spray gun, apply 4 or 5 mist coats at 50 PSI. Duratec acts as a hardener and thinner. All brass construction, with O ring. When you're done, spray it with a PVA curing. The prevail works great for spot repairs of gelcoat. The wax additive rises to the surface, making a film that creates an air barrier, allowing the final gelcoat layer to. Common Uses: hull bottom coating for trailerable boats and commercial boat decks, fuel tank coating. Call 1-800-838-8984 to speak with a knowledgeable sales representative. SPECIAL FIRE-FIGHTING PROCEDURES: Material is flammable and may explode in a fire. The advantage of using PVA and an unwaxed gelcoat is that you can spray multiple coats of gelcoat. The thinner will slow down the pot time also. Perfectly fine for repairs imo and used it many a time with no ill effects. Gelcoat is thicker than normal and spray gun will not deliver the product despite being set to normal operating settings and pressures. Another benefit of this is you can roll 2 coats and allow it to flash between coats and not have to worry about sanding or removing the wax. It is meant to be spread on a mold over the mold wax and before spraying gel coat. adhesion is not desired, an application of paste wax followed by Ease Release® 2125 PVA available from Smooth-On may be used. Wait for several hours and then lightly spray PVA (Polyvinyl Alcohol) The PVA serves as an air barrier, allowing the gel-coat to fully cure. Keep the area and wet/dry paper really wet. This PVA is coloured pink, enabling the user to easily see where it has been applied. The gelcoat seals the fiberglass and can be left alone or painted over. Simply press this gauge into your wet gelcoat to find out the thickness. For handling strong organic solvents. One said spray, so I did. I am trying to build three fiberglass kayak seats from a plaster of paris mold, and am seeking info on mold release compounds. Spray or brush with PVA, parting compound and allow to dry. Allows cure to take. Cut your patterns from the FLEX-MOLD, spray a heavy coat of polyurethane. Easy to use and easy to clean. This Gelcoat is tougher and adheres better than standard isothalic polyester gelcoat for re-gelcoating. This is a discussion for the topic how to spray gel coat on the board Gelcoat / Paint / Fireberglass Repair. You can spray with PVA before gel coal reaches its gel stage (5-10 min. Personally on my stuff gel coat was never on the list the weight issue alone plus it does NOT flex. Mould problem with PVA Release Agent with darker mold gelcoat colors. The PVA will dry in approximately 30 - 60 minutes (depending on the ambient temperature) and is then ready for the first layer of. Spray a distance that allows PVA to atomize (mist) completely before coming in contact with the gel coat. Features Contains Air-cure resins and additives eliminate the use of wax and PVA creating a superior finish. PVA (Poly Vinyl Alcohol) Patch Sealer - Eliminates the tackiness from the spray patch by creating a seal from the oxygen. I do it in several (4-5) very light coats with about 15 minutes between coats. Gel-coat is the most common finish for recreational and commercial fiberglass boats. You also need to apply the gel coat thick enough, if you plan on sanding, 30 plus mils may be needed and this will help the cure. This will form a barrier to the air and prevent the tackiness problem. Tooling gel coat is best applied with pressure pot spray equipment. Also, introducing the tinting agent may have affected the catalyzation. Thanks to much advice from Trident on www. Polyvinyl alcohol, however, is said to have negative effects on the final mold's surface finish. No air cure agents are then required and the finish is glossier, harder and exhibits less "orange peel". Catalyze for the gel/Duratec not the thinner. Spray or brush with PVA, parting compound and allow to dry. Another benefit of this is you can roll 2 coats and allow it to flash between coats and not have to worry about sanding or removing the wax. If in doubt about if the PVA has covered the gelcoat enough, let it too flash for a bit and spray another coat. Spray the newly filled gouge with a PVA curing agent and let it dry before peeling the agent back off. The DuraTec high gloss additive is exactly what it says. Polyvinyl Alcohol-I plan on mixing Gelcoat and Duratech 1:1 and then adding about 2% hardner? (not sure how to do this accurately) Do I need to use a gelcoat that uses the same type hardner as the Duratech or is all hardner the same? -How much do I thin it down to spray with a gravity feed HVLP gun? 10:1?. I would not use it for more than 1-2 sg. Change gel coat. This gun is ideal for spraying gel coat into open molds. ) Each Quart, Gallon, and 5 Gallon Pail of Sea Hawk Gel coat is sold with the appropriate amount (under ideal conditions) of MEKP catalyst and 8140 Wax Additive (Surfacing Agent). Partall Coverall Film is the new non-hazardous, low VOC water-based polyvinyl alcohol (PVA Parting Film) coating that acts as a barrier between parts and reactive mold surfaces. Also including PVA Mop, etc. Gel coat is applied directly to a prepared mould by brush, spray or roller. Gel coat is used as an in mold coating on composite parts to produce a durable part surface. RE: Sticky Gel Coat Repair HELP! Dang, that sucks. This spray gun is able to atomize almost any liquid and offers a professional finish. If you spray with a PVA, wait for it to cure and then peel it off before sanding. PVA needs to have at least three layers (more can be used if desired). The magic mix was 1 oz gelcoat, 6 ml acetone, a TINY dab of brown coloring agent and the appropriate amount of catalyst for the outside temperature. Everything you need associated with gelcoat. PVA forms an air-tight barrier without the hassle of wax additives that clog up sandpaper. Our broad product line is the result of our sole focus on spray technology. #180 Clear Gel Coat should be reduced with #1040 Hi-Gloss Gel Coat Additive to be sprayed through this type of equipment. v) Wait one hour and wash the PVA off the texture surface with warm water. This will form a barrier to the air and prevent the tackiness problem. Improved formulation enhances use – no fisheyes or cob webbing, self-leveling and faster dry film build up. Unfortunately, we found out later that this was a mistake. I’ve not used it very often at all so I’ll be interested to see how it works out. Spray enough thickness that you can sand off gelcoat to get a smooth surface. Hi All, I am just finishing a cockpit repair. non-skid and textured patterns 11 Painted Non-Skid Surfaces Polyurethane Paints 1. 01925 812809 [email protected] ), or adding 1oz per quart of wax additive sanding aid. The color wet is the color when dry. 5 millimeter thick layer of tooling gelcoat over the PVA mold release. Blisters — Appear shortly after part is pulled, especially when put in sun——-. High Quality Airless Spray Guns designed to minimize hand fatigue with a solid, safe & robust design supplied by Specialized Coating Systems (Pty)Ltd South Africa. The PVA will dry in approximately 30 - 60 minutes (depending on the ambient temperature) and is then ready for the first layer of. The advantage of using PVA and an unwaxed gelcoat is that you can spray multiple coats of gelcoat. 18 mils is standard but sometimes the gelcoat is thin and once you get outside the repair it is very easy to go through. Apply up to three coats and allow at least 30 minutes to dry. We also sell a Brushable Gelcoat that can be applied with a brush. Length of the gloves: 355mm. 7 steps to using PVA to glue wood. Allows a full cure at the surface of the mold (where air doesn't exist) and eliminates the tacky feel. v) Wait one hour and wash the PVA off the texture surface with warm water. The Quick Glaze system provides a great textured surface for porcelain, cast iron, gelcoat and acrylic bath products as well as tile, concrete or metal surface. When sanding flat areas use a rubber block. Over-spraying with PVA before. Fibre Glast offers three different spray guns: a 1/4 Pint Touch-up Spray Gun (HVLP), a. If used for touch-up or any top-coat application it will remain tacky unless covered with Mylar or PVA mold release. It is thixotropic to reduce sag and run off. I intend to use diluted PVA as a primer/sealer before I emulsion the walls. Remember, the gelcoat needs to remain in liquid form during this step. You can spray with PVA before gel coal reaches its gel stage (5-10 min. • Laminate as usual when the additive/tooling gel coat blend “tacks off” to the thumbprint stage. Even small quantity patch / scratch kits. An introduction to PVA release agent, which is used in fibreglass laminating. Polyvinyl alcohol, however, is said to have negative effects on the final mold's surface finish. This parting film is particularly recommended as a parting agent for separation between polyester or epoxy resins and various mold surfaces. Allow the gel-coat to cure for a day or two, then wash the PVA off with soapy water. Tooling gel coat is used to give the mold surface a strong, scratch resistant surface. ISO NP Gelcoats are high performance grade resins, based on NPG isophthalic polyester. Let cure overnight. Spray with PVA using a preval sprayer. Spraying PVA over gelcoat is tricky, better to use waxed styrene or finish gelcoat for final coat? Polish with 400, 600 etc all the way to 1200 Polish with 400, 600 etc all the way to 1200 How to Gelcoat Fiberglass: 12 Steps (with Pictures) - wikiHow. Flowcoat is basically gelcoat with the wax in it to allow it to cure on the surface in the presence of air. Applying Gelcoat, Spray or Brush? Also, when spraying laminating gelcoat (no wax additive), use of PVA will be required to achieve a full cure. The advantage of using PVA and an unwaxed gelcoat is that you can spray multiple coats of gelcoat. After part release, the film can be removed easily with water. Polyvinyl Alcohol (PVA) is for use as a curing agent for Gel-Kote and other air inhibited polyester resins. classicmako. with Gelcoat to create a repair coating. Keep applying until the gelcoat is slightly higher than the surface surrounding it. I was going to add wax to the gel coat mix before spraying. • To affect a final 'cure', spray on several thick coats of a 'parting fluid' - Polyvinyl alcohol -PVA ***. ) Partall Film #10 can also be used as a surface cure agent during gel coat repairs (locks out moisture in the air that inhibits resin cure). Part of the mold - a small spot of gelcoat - pulled away with the seat, so now that must be repaired. ***Do not use gel coat with wax in it. PVA Release Agents are a liquid solution of polyvinyl alcohol resin in a mixture of water and industrial methylated spirits sometimes including small quantities of dye and/or matting agent dependent upon the grade. For finishing with spray, especially if using a gun or Preval, thin the gelcoat with 50% Duratec. Check color thoroughly before applying. It accomplishes two important roles on boats: First, it looks good! It is available in many colors and provides a smooth, attractive finish. Then I sprayed normal Tap Plastics Gel Coat. Do It Yourself GelCoat Repair the repair is ready to prep and spray with gel coat. Even small quantity patch / scratch kits. If using a waxed resin or gelcoat, no PVA required. Preheat your hull by putting a trouble light inside the boat for at least and hour before you spray and keep it in there for at least an hour after you spray. If you decide to roll on the gelcoat, be sure to use a solvent-resistant 1/8” or ¼” nap. • Easy to spray from HVLP Spray Guns. 30pm, *Sat 8am-12pm *(March-Oct only). HVLP stands for high-volume, low-pressure, and spray guns with this type of material transfer give you better, more consistent coverage than conventional spray guns, and with minimal messy overspray. It features an easy to use, easy to clean construction. The higher viscosity of Partall® Coverall Film allows application by brush, roller, sponge or cloth as well as excellent spray characteristics. Common Uses: hull bottom coating for trailerable boats and commercial boat decks, fuel tank coating. The gelcoat must be thinned slightly with reducer to spray evenly (although acetone is often recommended from thinning, it will cause the finish to more quickly lose its brightness, color, and gloss). Automatic Electrostatic Spray Guns. 5 millimeter thick layer of tooling gelcoat over the PVA mold release. Also including PVA Mop, etc. FIBERLAY Tooling Gel Coat will give the mold a hard, glossy and long lasting surface. If mold is of plaster, wood, or new fiberglass, apply soft wax and buff with soft towel. Permanently repair or replace. Since 1968, West Marine has grown to over 250 local stores, with knowledgeable Associates happy to assist. HOW TO FIBERGLASS * PVA * Polyvinyl Alcohol * Attn Wild Card Customs. 30pm, *Sat 8am-12pm *(March-Oct only). Easy to use and easy to clean. PVA 6000 2013 vintage. Gelcoat is UV Stabalised for improved weather resistance, and has an excellent water resistance. Also, you may be too close to the gel coat surface while spraying and air pressure in the spray-gun is forcing the PVA into the gel coat. Gel coat is used as an in mold coating on composite parts to produce a durable part surface. An introduction to PVA release agent, which is used in fibreglass laminating. This spray gun is able to atomize almost any liquid and offers a professional finish. Gel Coat Application. If you don't use Duratec, you will never spray gel coat again!!!!! I just did a project on my Grady and it came out BEAUTIFUL! I mixed 50-50 durance and gel, no reducer needed. With waxed gelcoat, you need to let it cure then sand it before you can add an additional coat. for spray application. APPLYING PVA: preferably, use an HVLP gun with a tip between 0. With practice and good spray equipment, a Class “A” automotive quality finish may be obtained. The product cures to a hard finish and does not require Evercoat Mold Release (#105685) to attain a fully-cured surface. Spray a second coat of gelcoat if desired. 1) Spray gelcoat, spray pva, then remove PVA and hope things worked out or otherwise you are dealing with orange peel. Apply it as evenly as possible, keeping in mind that you may have to work quickly before it hardens completely. Most gelcoat brands want a thickness of. Preval stands alone in the paint industry with a full line of complementary spray products and accessories, designed to make spraying convenient and effective for the PRO and DIY user. Easy to use and easy to clean. I'll try and post a few pics for you. non-skid and textured patterns 11 Painted Non-Skid Surfaces Polyurethane Paints 1. Change gel coat. The pva-release-agent creates a release film that is comparable to an onion skin. Release agents are used to separate mold and component. Is that a good system for applying gelcoat? Should I apply gelcoat and spray with PVA to cure it? Have any of you sprayed gelcoat with good results. Allows a full cure at the surface of the mold (where air doesn't exist) and eliminates the tacky feel. By using PVA, you can spray a coat of gelcoat, then mix and apply another coat within an hour or so. The spray wax PVA Mold Release, will ever so slightly seal the entire surface and allow No Air to make contact with the surface. (Essential for all types of Gelcoat repairs and so easy to use. GS 140 - Gelcoat Spray Gun / Spray Gun for gelcoats & resins. spray gelcoat (quart) (spray gelcoat is formulated for 1953-72 corvettes. Shop, read reviews, or ask questions about EVERCOAT PVA Polyester Curing Agent at the official West Marine online store. They didn't offer to fix it?? I keep a spray bottle close by filled with soapy water. Start with fine (600) grit sandpaper to save time and prevent burn-though. RE: Spraying PVA I water it down about 50/50 with water and spray down with my HVLP gun at about 25 psi. PARTALL One-Coat PVA REXCO is the leading manufacturer of PVA film-forming solutions (parting films) for composites in North America. Preval stands alone in the paint industry with a full line of complementary spray products and accessories, designed to make spraying convenient and effective for the PRO and DIY user. Then, attach the cord on the gun to an air supply source, like an air compressor. A gelcoat spray gun will make it easier to get an even coverage on a large fiberglass surface. I'm choosing that kind of sprayer because of my low budget. Hi All, I am just finishing a cockpit repair. Wax and spray PVA 6. Gelcoat derives its name due to it high viscosity and ability to be applied thickly on vertical and overhead surfaces in one coat. Spray or brush with PVA, parting compound and allow to dry. Release agents are very easy to use. Wait 30-45minutes till it gets tacky then spray or foam brush PVA. The tooling gel coat should be applied in two smoothly sprayed coats of 20 wet mils per coat. ISO NP Gelcoats are high performance grade resins, based on NPG isophthalic polyester. Will migrate or "bloom" to the exposed surface of the laminate or casting. The highest-quality, ISO NPG marine finish gel coat used to permanently repair or replace original, high-gloss finish. PVA Mold Release Typical Spray Gun If the PVA is applied with a spray gun, apply 4 or 5 mist coats at 50 PSI. Polyvinyl Alcohol Mold Release is used to ensure a surface cure. 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. I want to buy a HVLP paint sprayer to apply gelcoat and PVA to fiberglass projects. I got the seat off the mold but it was more of a struggle than usual, and I think it was the wax that was doing the mold release job, not the hair spray. 5 tips on using PVA Release Agent August 9, 2016 September 7, 2016 FGCI 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. 19 tide water horizon blue 12-13. TAP Gel Coat: As the first coat applied to the surface of a mold, Gel Coat becomes the finish surface when removed from the mold. If you want to use gelcoat, the best way to exclude air and not disrupt the surface is to spray the gelcoat with PVA mold release. It's easier to use the surfacing solution than PVA and for most jobs the results are about the same. Reduce w/acetone by 20 -30%. Also get a pint or so of PolyVinyl alcohol. GSW4 White+Spray+Gelcoat 4kg GSWP White+Spray+GelcoatPail 20kg GSW230 White+Spray+GelcoatDrum 230kg PVAB025 PVA+Blue+Release 200g PVAB05 PVA+Blue+Release 450g. PVA Blue Release was designed as a mould release/parting agent for use when fabricating mouldings in polyester gelcoat and layup resins in GRP construction. The thinner will slow down the pot time also. Over-spraying with PVA before. You can apply PVA-release-agent also with a spray gun. Then I sprayed normal Tap Plastics Gel Coat. PVA can be sprayed, brushed or sponged on (depending on the size of the part), spraying we recommend at 50 – 80 psi. Two Step System Waxes. Pop the part off and see what. If gel-coat is to be sprayed on with a gel-coat gun, spray up to a thickness of. Use it if you want a high gloss. Finishing: let the gelcoat cure a minimum of 6 hours, overnight is better. Spray 8-10- mils thick over repaired area. let me add something here: interprotect 2000e: it needs to be applied to a thickness of 10m,for it to be fully effective,as a waterproof barrier. How long do I have to wait before I apply the 1st emuslion coat after I have applied the PVA mix. Once the final layer of wax has dried, PVA should be applied with the following considerations: Glass fiber release agent can be brushed on or spray on, but for best results, apply with a spray gun, 12–18 inches away from substrate. Three coats of PVA should be applied and the plug kept for drying for about 30 minutes. Showcasing Gel Coat Fiberglass available to buy now online. The key is to spray enough gel so it flows on your work piece. I have repaired my hull before using gelcoat. This is a discussion for the topic how to spray gel coat on the board Gelcoat / Paint / Fireberglass Repair. The layer should be between 15 and 20 mils. The PVA seemed to have too much surface tension, so I tried thinning with water. Partall® Film #10, the original green parting film, is resistant to solvents and styrene yet is water soluble. It can also be used as a non-waterproof interior varnish, perfect for papier mache projects. I picked up a pamphlet, at West Marine, by West System brand epoxy systems which tells me I can mix gelcoat with a clear low-viscosity resin that is not air inhibited so it will dry hard and tack free. Once the part cures, any PVA residue can be cleaned away easily with a wet rag. The FLEX-MOLD is coated with green polyvinyl alcohol (PVA) to serve as a release agent as well as a barrier coat that prevents a chemical reaction that will occur between the FLEX-MOLD and gelcoat, resulting in a distorted pattern. Liquid release wax and PVA release agent are used for closed-pored surfaces such as GRP forms. The PVA glue can be dilated up to 5:1 with water for maximum use. Store gel coat in a cool, dry place. • Eliminate low-gloss areas on the edges of repairs… the low-gloss donut often seen in gelcoat repairs. With over 30 years experience in the North American composites industry, The Gelcoater knows what its customers need in a spray gun and backs them with the best warranty in the business! The GX1000 gelcoat and resin spray gun, also know as the "dump gun" or "cup gun" is a perfect example of this. Take the gel coat, thin it, leave out the surfacing agent, spray it, let the surface dry 2-3 hours, and spray 3-4 mist (thin) coats of PVA mold release lightly over the gel coat. We also sell spray guns and the Gel Coat Cup Gun. That keeps it from sliding around. For repairs, you want it waxed. Wait for several hours and then lightly spray PVA (Polyvinyl Alcohol) The PVA serves as an air barrier, allowing the gel-coat to fully cure. The top supplying country is China (Mainland), which supply 100% of spray can gelcoat respectively. The advantage of using PVA and an unwaxed gelcoat is that you can spray multiple coats of gelcoat. PVA is also used in gelcoat repair for achieving a tack-free finish post spraying. Flowcoat/Gelcoat Browse by All Flowcoat Sort by Featured Best Selling Alphabetically, A-Z Alphabetically, Z-A Price, low to high Price, high to low Date, new to old Date, old to new. John Sweet of Sweet Composites, reports a cap gun works well and requires minimal cleaning. PVA is water soluble, so cleanup with warm water is a snap, I mark my PVA brush with a felt marker, so I don't use it for something else. Also, you may be too close to gel coat surface while spraying or air pressure in the spray gun is too high forcing the PVA into the gel coat. It uses a one-quart paper or plastic cup to hold the spray material. Gel coat is made to be sprayed onto a mold and then have the glass laid up on top of it. ) Partall® Film #10 can also be used as a surface cure agent during gel coat repairs (locks out moisture in the air that inhibits resin cure). At McLaughlin we always spray black gelcoat behind lighter colors like white. Permanently repair or replace. The layer should be between 15 and 20 mils. I wouldn't mix wax in the gel coat, I wouldn't mix anything besides the required ammount of Hardener or Color into the Gel Coat. gelcoat in it starts to set. The mold release agent is a special wax, and/or PVA. The gelcoat with wax is used for an air dry post-applied application. PVA will clean off easily and leaves a tack free surface. These high quality products make the maintenance and repair of your boat better and easier than ever before. Gel coat will not fully cure without adding a surfacing agent or over spraying with PVA. One gallon of gel coat will typically coat approximately how many square feet at 20-25 mils? 20-40. Unfortunately, we found out later that this was a mistake. Conformal coating machine With FCS300 spray valve and rotational head 2013 vintage. Please select appropriate gauge in the. Is that a good system for applying gelcoat? Should I apply gelcoat and spray with PVA to cure it? Have any of you sprayed gelcoat with good results. Spraying PVA over gelcoat is tricky, better to use waxed styrene or finish gelcoat for final coat? Polish with 400, 600 etc all the way to 1200 Polish with 400, 600 etc all the way to 1200 How to Gelcoat Fiberglass: 12 Steps (with Pictures) - wikiHow. There is no need for PVA, or some other mechanism to cut off the air supply to the new Gel Coat, which allows it to cure. All PVA glues are designed to work on porous materials only. • Safe on painted, fiberglass, gel coat, colored plastic, glass, chrome and stainless steel surfaces. Call 1-800-838-8984 to speak with a knowledgeable sales representative. Fibre Glast professional-grade spray guns won't let resin set up in the gun. Remember, the gelcoat needs to remain in liquid form during this step. Now this stuff can get a little messy if you use too much, some people like to spray or mist it on, I prefer to brush on. Three coats should be applied if you want the best possible release. Since 1968, West Marine has grown to over 250 local stores, with knowledgeable Associates happy to assist. *** Spray (recommended) a thick layer of gelcoat on the plug. I was going to add wax to the gel coat mix before spraying. Make note: Too much PVA can cool down the Gelcoat heat reaction. Apply PVA with a squirt spray bottle achieving a light mist. Shop, read reviews, or ask questions about EVERCOAT PVA Polyester Curing Agent at the official West Marine online store. We also sell a Brushable Gelcoat that can be applied with a brush. Tooling gelcoat requires a special spray gun. Unfortunately, I have had mixed results with the gel coat portion. Application Instructions for Resin & Gelcoat Additives Wax Solution Description: Surfacing Agent is a clear liquid added to produce a less tacky finish and improve sanding properties. If using a waxed resin or gelcoat, no PVA required. Polyvinyl Alcohol (PVA) is for use as a curing agent for Gel-Kote and other air inhibited polyester resins. Flowcoat is basically gelcoat with the wax in it to allow it to cure on the surface in the presence of air. Tips for applying PVA release agent on moulds Showing 1-5 of 5 messages. ***Do not use gel coat with wax in it. adding dyes to the glue). I agree and anyone who thinks they can spray jell and have it turn out like paint and just wet sand and buff is crazy. When you're finished filling, seal the repair off from the air with a PVA curing agent or a piece of plastic wrap or wax paper. Polyvinyl Alcohol-I plan on mixing Gelcoat and Duratech 1:1 and then adding about 2% hardner? (not sure how to do this accurately) Do I need to use a gelcoat that uses the same type hardner as the Duratech or is all hardner the same? -How much do I thin it down to spray with a gravity feed HVLP gun? 10:1?. Gel coat is made to be sprayed onto a mold and then have the glass laid up on top of it. 18 mils is standard but sometimes the gelcoat is thin and once you get outside the repair it is very easy to go through. Liquid release wax and PVA release agent are used for closed-pored surfaces such as GRP forms. Designed as a mould release/parting agent for use when fabricating mouldings in polyester gelcoat and layup resins in GRP construction. Gel coat will not fully cure without adding a surfacing agent or over spraying with PVA. Spray over wet gel Mix 50/50 with gel coat and spray with a siphon cup gun. MEKP is used in all polyester layups and yes this is the hardener or chemical that is added to the resin to harden. If the PVA is applied with a cloth, saturate the cloth and wipe the PVA onto the plug with one pass.