Review the information in the SDS (safety data sheets) for each product, including Section 8: Exposure Controls/Personal Protection. Recommended Number of Coats for Barrier Coating: 2-3 coats (minimum), when using a 3/8" roller cover; 3-4 coats, when using a 1/4" roller cover; 4-5 coats, when using a 3/16" roller cover. Spread the epoxy into thin even film, 5. To avoid sanding between coats, it is best to apply all coats in the same day. Three months or so isnt too long. Water cant get in to do damage. Don't Threaten. Over the course of years water vapor can permeate the fiberglass hull that is below the waterline. As more blisters occur, the situation can become a problem that might threaten the structural integrity of the hull. A barrier coat seals the surface, making it impenetrable to water in order to prevent blistering, which compromises the integrity of your hull. Shake or stir the curing agent (small can) and base (big can) components thoroughly before dispensing and combining. Roll lightly and randomly over a small area. I want those areas prepped and coated as its instructed. Before you begin any project, we recommend the following: Carefully read the safety information on all product labels. Increase the coverage area if necessary to spread the film more thinly and evenly. For best adhesion, use TotalBoat Aluminum Boat Etch Wash, as directed, immediately after sanding. Gloves, face masks and bunny suits are wise precautions. This means about five or six coats of InterProtect are required. Solvent wipe with denatured alcohol or acetone. For these coatings, it's very important to allow the TotalProtect to cure enough to be sanded (24 hours @ 50F, 16 hours @ 70F, or 12 hours @ 90F. Under the right conditions this blister might expand and begin to delaminate the local area around the blister. Both can be and are applied by boat owners all the time. This category only includes cookies that ensures basic functionalities and security features of the website. The West System comprises a base system epoxy resin (105) that can be used with several alternate hardeners, 206 Slow, 205 Fast, 207 Clear and 209 Extra Slow (Tropical). Apply TotalProtect, as directed. Disposable, thin urethane foam rollers, such as WEST SYSTEM 800 or 790 Roller Covers, allow greater control over film thickness, are less likely to cause the epoxy to exotherm and leave less stipple than thicker roller covers. Steel or Iron - For maximum adhesion, these metals must be shiny and clean. To understand more about blisters here is a quick review how the typical fiberglass boat is constructed. LinkedIn sets the lidc cookie to facilitate data center selection. The longer the hull dries out the better. racist or sexually-oriented language. It is a bit of a stretch but can be done. "datePublished": "2017-04-28", TotalProtect did not cure properly: Improper mix ratio: The mix ratio is 3:1 by volume. It is added to the mixed epoxy resin at the rate of 15% to 20% by weight. Everyone tells me dont worry about, they usualy paint it while its hanging in the travel lift, shortly before they drop it back in the water. The web site URL is www.yachtpaint.com.There is a 12 page InterProtect technical bulletin located at: http://www.yachtpaint.com/USA/hotlinks/interprotect_bulletin.pdf. Water barrier techniques and products have grown into maturity over the past few decades. Mix only as much resin/hardener as can be applied during the open time of the mix. Threats of harming another Before starting any treatment, we strongly recommend seeking the advice of a qualified marine surveyor with experience in osmosis repair. The InterProtect instructions lay out a timeline that will allow applying all five to six coats of InterProtect in one weekend. Mark the blisters, so you dont miss any later. To ensure the best bond, apply 1 coat of TotalBoat TotalProtect within 1 hour of completing all surface prep. Complete all fairing and cloth applications before beginning the final coating. I always wanted to know how one goes about doing the areas covered by the boat stands. After mixing, set the can aside and allow TotalProtect to induct for 15 minutes. By clicking Accept All, you consent to the use of ALL the cookies. Choose a size and copy the code below to embed this guide as a small widget on your site / forum. Sand with 80-grit. The mixture needs to sit for at least 20 minutes to let the two components react. Also check out the super handy HOW TO article on bottom paint which covers barrier coat and then, of course, applying your antifouling paint as well. How To Apply Barrier Coat to Your Boats Bottom. Apply a minimum of two coats of WEST SYSTEM epoxy for an effective moisture barrier. But the biggest problem is that fiberglass isnt totally waterproof. Keep it Clean. No racism, sexism or any sort of -ism Both are two-part epoxies. Use a clean, dry, wooden stir stick to mix both components thoroughly. Sand lightly with 80-grit sandpaper; remove residue by wiping with a lint-free rag dampened with Dewaxer & Surface Prep. This cookie is used to store the language preferences of a user to serve up content in that stored language the next time user visit the website. The good news is that if you overcoat with antifouling paint within 3-10 hours (see temperature details in technical data sheet), you dont need to sand between coats. However, you may visit "Cookie Settings" to provide a controlled consent. The cookie stores information anonymously and assigns a randomly generated number to recognize unique visitors. Barrier coating tools "@type": "ImageObject", Do this by dragging a foam roller brush lightly over the fresh epoxy in long, even, overlapping strokes after each batch is applied. Apply TotalProtect within 1 hour of metal prep. For example, for the 1st coat, move vertically, for the 2nd, horizontally, for 3rd coat vertically and so on. Items can include, but are not limited to, the following: Proper respirators for product application and for sanding cured material. Press your thumb gently into the TotalProtect film; if you left a thumbprint and your thumb is clean, the surface is ready to apply antifouling paint. Good question. First, mold release wax is sprayed onto the inside of the mold, then the layers of gel coat, a specially formulated pigmented polyester resin that gives the boat its color and smooth exterior finish, are sprayed on. "url": "https://www.totalboat.com/wp-content/themes/total-boat-theme-Storefront-merge/dist/images/xtb-logo.png.pagespeed.ic.sE_9E4HgnO.png" A review of their manuals will reinforce how seriously they take this problem. Brush or vacuum to remove residue. As builders determined that blisters resulted from water penetrating the gel coat surface, the barrier coat (usually an epoxy, or similar material that seals out the moisture better than polyester gel coat) was born. In these cases, it may only be necessary to fix the blisters and put off the much more costly barrier coat application for a few more yearswith luck, forever! Roll out the excess on the raised section of the roller pan to make sure there is a uniform coating round the roller. Lead - TotalProtect will not stick to dull, oxidized lead. When using TotalProtect as a barrier coat, its critical that you apply antifouling paint over TotalProtect. Recently we saw it used on the Vela restoration on the interior of the hull which will not see any sunlight and which required a bright, white finish. Flush with water and allow the damaged areas to dry, which could require from several days to a few weeks. Any amines in the epoxy will settle on the surface, depriving the next coat of a good bond. Just 10 mils (about 4 to 5 coats) of a barriercoat like TotalProtect Epoxy Barrier Coat Primeris all it takes to establish an aggressive barrier coat. The first coat of epoxy is applied without the 422 barrier coat additive. The ANONCHK cookie, set by Bing, is used to store a user's session ID and also verify the clicks from ads on the Bing search engine. "mainEntityOfPage": { They are inexpensive and full of information. my boat is a 16ft. If that vapor finds a weak spot a blister can result. Wipe clean with a clean, lint-free cotton rag dampened with TotalBoat Dewaxer & Surface Prep, and follow with a clean, dry cotton rag. The _ga cookie, installed by Google Analytics, calculates visitor, session and campaign data and also keeps track of site usage for the site's analytics report. ", The object of barrier coating is to build up an epoxy thickness. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. Allow the temperature of porous surfaces to stabilise before coating. Cored hulls present a complex problem in that both the core material and the fiberglass/ gelcoat may be damaged in extreme cases. Notify me of follow-up comments by email. 6. First of all, we need to talk about preparing the hull for the barrier coat. One of the keys to a long-lasting bott, I knew I had a blister problem as soon as I pulled the boat in Tennessee to prep her for moving. Tip off the coating by dragging a foam roller brush lightly over the fresh epoxy. As more water enters, the pressure increases and eventually, a blister is formed. If your boat has a fiberglass hull, you MUSTprotect it with a barrier coat beneath your bottom paint. Subsequent coats of epoxy (WITH 422 added) need to be applied as soon as the previous coat has cured enough to support the next coat. Hull constructions are very varied so there is no way to guarantee long-term 100% success after a repair. Gougeon Brothers has an extensive web site at http://www.westsystem.com/ with product descriptions and application notes. or anything. Previously Painted Surfaces: Always verify that you're not attempting to overcoat a 1-part paint. When overcoating with solvent-based antifouling (not including specialty racing coatings) use the thumbprint tacky method to overcoat. "@context": "https://schema.org", Linkedin - Used to track visitors on multiple websites, in order to present relevant advertisement based on the visitor's preferences. The thumbprint tacky test is an easy way to know when to recoat. Sever problems might require stripping the gel coat entirely, testing the laminate with a moisture meter and letting the boat sit on the hard for as many months as it takes for the meter to read the same both above and below the waterline. We also recommend two introductory publications from Gougeon Brothers series of WEST SYSTEMS books: Fiberglass Boat Repair and Maintenance and Gelcoat Blisters: Diagnosis, Repair, and Prevention. Our tech help hotline is always open for advice on your preparations and applications of all of the products we sell. 2022 Hamilton Marine. Sand after curing and youre then ready for bottom paint. This will transfer the epoxy evenly over an area of approximately 600mm x 600mm. This cookie is set by Google and is used to distinguish users. Created from years of extensive boat knowledge working with local builders, makers, and DIY-ers, our innovative marine grade products are used in thousands of applications. This may allow three or more coats per Always dispense the proper amount of base and curing agent, which is 3 parts base to 1 part curing agent. Brush (high-quality natural bristle brush, such as a chip brush); Roller (3/16" - 3/8" nap or foam solvent-safe roller cover); Spray Equipment (pressure pot, conventional, HVLP, or airless/air assisted - see technical data sheet for details on spray equipment setup). Aluminum: Sandblast or disc sand the surface down to shiny metal. New hulls will need to be thoroughly cleaned to remove all traces of the waxes used in the molds used to make the boat. Please avoid obscene, vulgar, lewd, I am curious as to what you would recommend since screwing this up is not an option considering the time and expense doing my vessel. Recoat TotalProtect with more TotalProtect within 2 hours to 60 days. The induction period is the time it takes for a chemical reaction to occur between the two components, and is very important for the epoxy components to cure properly. Wipe clean with Dewaxer & Surface Prep. 3/16 Inch Solvent-Resistant Smooth Mohair Roller Cover, TotalBoat TotalProtect epoxy barrier coat primer, Mix thoroughly and allow a 15-minute induction period, Recoat with TotalProtect after doing the 'thumbprint tacky' test, Overcoat with bottom paint when the surface is 'thumbprint tacky', Overcoating with topside paint (or other coatings), How to Apply a Barrier Coat Below the Waterline, TotalBoat TotalProtect Epoxy Barrier Coat Primer. There are two popular barrier coat systems on the market and Ill talk about both of them.