Having said that polyester is more brittle as noted by Pinecone so you need to be more attentive to the layup around mounting points. It is also considered as the traditional surfboard. Once cured, the epoxy and polyester resin shouldn't stick to silicone. The thing is, epoxy resin is more expensive than polyester and tougher to work with, so the masses gravitate toward the cheaper and easier alternative. Mayo, There are several kinds of resin. Resin cures with a tacky surface so that subsequent layers may be added without sanding. The key difference between epoxy and fiberglass resin is that epoxy resins are made mainly from the reaction between epichlorohydrin and bisphenol A, whereas fiberglass resin is made from the combination of alcohols and organic acids. I wanna find the limit of what one . The hallmark of epoxy surfboards is that they are incredibly light and tough. One reason for this is the ability of epoxy to form a stronger mechanical bond to a damaged laminate than polyester resin. Environmentally Friendly - Epoxy surfboard are significantly less toxic. When the repair will be finished with gelcoat . For that application epoxy laminating resin is the only way to go. It is a lot tougher and a lot more flexible because it absorbs the impact instead of shattering. FIND YOUR PERFECT BOARD Extruded Polystyrene (XPS) Boards Epoxy surfboards vs. Art Friendly, Eco Friendly,Surfboard production friendly all at Sanded Australia. Epoxy resins generally produce a surfboard with superior strength and durability than polyester resins. Epoxy generally has a bonding strength of up to 2,000 psi. per square inch. If you are really fixed on using epoxy, do like the others said and MAKE SURE you sand down the place you will patch as best as possible (don't leave any smooth spots). Traditional Glass: Cuts Through Chop - A poly blank is a fairly dense foam. It offers excellent moisture barrier qualities when used as a coating. 6oz Fiberglass w/4oz Patch // E-glass has the highest strength-to-weight ratio 4. Epoxy resins and fiberglass resins are important materials that have enhanced chemical and physical properties. KEEP IN MIND Epoxy adheres to wood much better than polyester does. It became popular in 2005 since there was a massive shortage of fiberglass for board making. Is it suitable, or should > spend the money on some new fishing gear? Sully says: January 9, 2016 at 11:24 pm. The flex and surfing benefits of epoxy vs. Polyester is a matter of personal preference, with some people (and pro surfers) preferring epoxy boards over poly boards. PolyEster Resin // Advanced polyester resin for strength and flex 3. They are glassed with epoxy resin making them extremely tough and durable. It has excellent thin film cure characteristics and resists micro- cracking better than polyester resin. An epoxy's relative strength can hold up to 2,000 lbs. Should I Use Epoxy Or Polyester Resin Surfboard? Epoxy resin is the only resin that can be used on EPS foam. If you have no idea, see the differences below. If you're contemplating some major build or repair projects involving fiberglass this summer, then you are probably trying to decide whether it is worth the added expense of using epoxy instead of polyester resin. Structure : Despite both boards having the same structure, its interior is made with foam, the materials used are different. by kitesurfer » Fri Jun 25, 2010 6:57 am. Epoxy resin is very resistant to osmosis, so it is the best choice for yachting applications, especially for parts under water. Epoxy is a much better choice if you are looking to reduce your carbon footprint. Fiberglass vs Epoxy Surfboards. Polyester resins differ from epoxy as they are hardened by adding a small amount of catalyst (MEKP catalyst) to the resin and mixing it in thoroughly. Polyester off-gases VOCs and has strong, flammable fumes. In the case of extreme conditions, epoxy will yield superior results. Most other surfboard manufacturers charge $100-$150 for epoxy. The shelf life of polyester resin is about 6 months - 1 year. The surfboard market is already a very tough market to make any money in so most surfboard builders use . That makes epoxy resin usually the best choice for fiberglass repair work. Jan 5, 2007. That has been well proven by OSHA and many others in industry. This ultimately provides strength by acting as the matrix and as an adhesive that holds the fiber sheet on the substrate. To make a hot coat or sanding resin just add surface agent to the S249A surfboard resin. Polyester Resin Characteristics: Polyester resin is brittle and prone to micro-cracking. Shop now online or come and visit us at Central Coast NSW Typically, epoxy boards are made from EPS foam and are coated in epoxy resin. Under most circumstances, resin makes up a large part of a completed board's overall weight. Epoxy surfboard repair is slightly more specific than that of polyester. PU Blanks - PU stands for Polyurethane. Epoxy surfboards, made from EPS foam, are some of the most innovative surfboards out there. Some hardcore surfers or traditionalists like the feel or flex of a "poly" surfboard and how it rides. Surfboard Resins. Reply. Epoxy also allows for more flex strength than polyester, which means that your board can withstand greater punishment from the lip. This method was outlined in RCM's Flight Training Course and it worked . Board #2.) Surfboards can be glassed with two types of resin: polyester and epoxy. Responsive - Another benefit to the poly blank is the spring it provides. - Resin that will not damage EPS Foam . For that reason, hobie hotline recommended vinylester for EPO repairs. Cost - Epoxy resin costs more than polyester resin and therefore requires an upcharge. A PU surfboard has more flex but is easier to ding. Our customers' fiberglass repairs range from filling a minor screw . Monthly Tech-Talks, cool kite adventures of our team riders, new board models or factory news. Being a major component of the surfboard, surfboard makers can control the weight of the board by using a lighter resin.Two forms of resins are used in surfboard manufacturing, Polyester and Epoxy. surfer98-. Most people still use the regular PU or the polyester resin and fiberglass opposed to the epoxy. An epoxy's relative strength can hold up to 2,000 lbs. Epoxy resins contain one or more epoxide groups. Epoxy was first created in 2005 by surfboard design experts. To achieve the highest bond strength and water resistance use LBI's 901 Vinylester Resin. - Comparing Epoxy to Polyester as to the effect on the end result of the sandwich. Board #2.) Like to learn more about the new range of resins we carry, epoxies, Epoxy acrylic, eco friendly resins and surfboard poly resins that the big Surfboard brands in Australia use. Pros Using polyester resin on a surfboard will also remove the polystyrene core, therefore ing polyester resin on an epoxy surfboard it will eat away the polystyrene core. Resistance to Wear Polyurethane: The magic PU board is glassed with one layer of fiberglass S-cloth on the bottom and two layers on the top and set with polyester resin. Think of it as going with the grain in wood instead of against it. Epoxy will not bond to polyethylene, polypropylene, EPDM, anodized aluminum, Teflon or Tedlar. EPOXY for the resin and EPS for the core. Epoxies made from alkylated phenol and formaldehyde . While you can apply epoxy to polystyrene while driving, it will do not adhere to styrofoam, which makes epoxy the most effective repair. It has been the traditional surfboard core for over 60 years. One of my first power planes was finished with polyester resin only, no cloth. Additionally, these boards also float better compared to fiberglass boards. Polyester Resin vs. Epoxy Resin. Epoxy vs. Polyester. Polyester Surfboard Resin is formulated to cure water white (clear) and to cure in thin laminates. Generally, Epoxy is a lighter and stronger material than Plastic, although it is technically a bit harder. Epoxy emits 50-75% fewer VOCs (volatile organic compounds) than polyester resin. Re: fiberglass resin vs epoxy. Epoxy resin (in general) is better than Polyester resin. per square inch, while a polyester resin can hold less than 500 lbs. Blog: inside news from Appletree Surfboards. This surfboard comes with an EPS core. KS. Most do-it-yourselfers understand that epoxy's adhesive bond is much stronger than polyester, but two additional characteristics might also tilt the scales in favor of epoxy . We stock a wide variety of polyester resins including general use resins, tooling resins, vinyl-ester resins and specialty resins for the surfboard industry. Since Clark Foam closed in December 2005, Epoxies have been developed specifically for the surf industry and are now whiter, stronger, and easier to use than ever. per square inch. Epoxy resin is far superior in strength to polyester. When I started Wave Arcade, I knew that bio-based epoxy resin was going to be a key component to making my fins and boards. Don't get me wrong though. It does not bond well to epoxy. . The resins we produce (Resin Research Epoxies) are all high solids and have 1/50th the vapor of polyester surfboard resins. Not the foam…the Epoxy. EPS is an open cell foam, meaning it's extremely water absorbent. Gallon, S249A Surfboard Laminating Resin: Gallon, S249A Surfboard Laminating Resin- This resin cures "water white" (clear) and is suitable for applications such as surfboards that require a clear coating or lamination. No boat is made with epoxy resin and . As for ease of use, I haven't noticed much difference, personally. Epoxy resin can only be used with EPS foam and boards made in this fashion are referred to as EPOXY/EPS surfboards. If you are using polyester resin, follow there instructions. As the name ("expanded polystyrene") implies, EPS foam is expanded into a mold to ultimately end up with a finished surfboard blank at a specific density. Polyester resins are mixed with a catalyst to cure. An epoxy resin board can take more "force" (stress) and be "flexed". Wood-Ply Stringer // Natural wood fibers creates a natural flex and adds break-strength 5. There is a fast flex pattern and less dense foam that contribute to epoxy construction boards being springier and smoother than poly construction boards. I personally liked laminating over wood (vs foam) since it's hard surface gives you something to squeeze the glass and resin against. Epoxy Coating Resins Vs Casting Resin The most obvious difference between the two is the intended use. In the meantime, here is an example of a term that can be confusing: Tint . EPS stands for "Expanded Polystyrene." This is open-celled, beaded foam, which is used in everyday items such as cups and car seats. Epoxy resins are mixed with a hardener to harden. An epoxy board has resin that is up to 35% stronger than resin used on a fiberglass board. Although epoxy surfboards and epoxy resin surfboards are more durable than polyester, dings are still inevitable with time. This varies per square inch, while a polyester resin can hold less than 500 lbs. And the other great advantage of epoxy resin that it doesn't degrade over time. Polyester is an adequate adhesive but not as good as epoxy. We also stock filler resin, gloss resin, general purpose resin and acetone products that are used by some of the leading shapers throughout the industry. Both resins are very fuel proof. You can vary the cure time of polyester resin by adding more or less of MEKP catalyst. Our boards will remain strong even if they get a little bit older. Key differences between epoxies and resins 1. FCS II or Futures Fin Boxes // Takes just seconds to insert and remove . If the epoxy is a product of the reaction between bisphenol A and epichlorohydrin, it is referred to as bis A epoxies. I agree, I've been dealing with fiberglass since the early 60's, building surfboards, then later building 2 boats a 42' powerboat and a 38' LOA Bristol Channel Cutter sailboat. Polyester resin generally costs slightly less than epoxy resin. a few rules of thumb if you don't have a lot of experience with this type of construction; the eps can have a texture to it, so look for small veins or round looking beads under the glass, as for. For what it's worth, surfboards have been made with polyester resins for a very long time and they are quite successful being used year round in all the same conditions our boats get used in, except possibly ice. Beginners prefer to use epoxy surfboards since these boards are lighter and easier to handle. Check the link to see the finished boards and the learn about the bio-epoxy resin used. Since our humble beginning in 1991, Epoxy Pro has expanded and improved its production line and services, taking our place as one of the most complete surfboard factories in the world. The strength in the part should come from the density of the fiber and not the type of resin used. The shelf life of polyester resin is about six months - 1 year. I know West epoxy will work but based on the large quantity I will need I wanted to see if cheaper polyester resin would work. Our surfboard resin is Silmar S249A which is the surfboard industry standard for laminating and hot coating. Superflex: Glassed with a layer of glass that has additional strands following the nose-to-tail direction called Warp glass. Thank you for the reassurance and not saying its impossible. Our polyester laminating resin is one of the clearest on the market, Sold in 1L, 4L and 20L Drums. We didn't come to any marvelous conclusions yet, but we're working on it. We've been building Epoly boards for years and with more and more positive feedback we feel it's the optimum direction for resilient yet affordable surfboard construction. Polyester and epoxy do not bond but more importantly the chemicals used in polyester can have some rather "interesting" effects on eps, if this is what the board is shaped from and the resin reaches the foam. #2. This gives smoother on the water when riding. Thanks for the help! Advantages of an epoxy surfboard Here we have a list on the main advantages that an epoxy board will have vs a polyester board. They don't flex as much as fiberglass boards, but an epoxy surfboard will be much more durable. Epoxy surfboards have polystyrene foams and coated with an epoxy resin. In addition, epoxy resins are applied to the dry fiber sheets in the field and then cured in-situ. It used to have a bad rap because it would yellow quickly. Resin Research Epoxy for Surfboard Shaping & Ding Repair Resin Research 2000CE Ultra with Fast Hardener 1.5 Gallon kit $202.90 Go ☛ Resin Research epoxy is super easy to work with if you're new to shaping or repairing your own boards. An epoxy surfboard doesn't flex as much and rides slightly different so that is something to keep in mind if that is a concern for you. The Hi-Lite Laminating Resin Formula is used by Australia's leading Surfboard Glassers. Nope you need to use the epoxy one. The boat is a J24. - Resin that dries Non-Tacky in Minutes. I have much more limited experience with the polyester resins though. PU blanks can be glassed with either polyester resin or epoxy resin (epoxy becoming more popular due to its superior strength). Epoxy Surfboard Buying Guide 2. Polyester resin is brittle and prone to micro-cracking. Catch Surf, as well as others, use wood stringers and epoxy resins to add stiffness and strength. EPOXY- Epoxy is a hard type resin that is used as an essential component for the construction of epoxy surfboard. Superflex: Glassed with a layer of glass that has additional strands following the nose-to-tail direction called Warp glass. Watch more How to Choose a Surfboard videos: http://www.howcast.com/videos/507804-Fiberglass-vs-Epoxy-Surfboards-Surfboard-BasicsWhen you're working with Epo. This resins features are Un-matched and include: -Resin that repairs both Poly and Epoxy boards.
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