Bill Brousseau Jul 21, 2017. From the looks of the transom in this boat, I would estimate a typical transom will last about 20 years or so before they need to be replaced. Whether it’s cabin cruises, pontoon boats, or any water-based vehicle, they are mostly made from marine Plywood.. – Core material – should I just go with plywood, or is it worth spending the extra $$ on a composite/synthetic core material? Please hit the like and subscribe buttons. Therma-Lite boards are available in sheets or pre-cut parts or kits. Read on to learn more about the best marine plywood alternatives including their features and advantages. ft. (320 kilogram per cubic meter to 640 kg/cu.m.). You may have to make the new transom … For any future projects I would recommend AquaPlas III Transom board. The 9 best marine plywood alternatives include the following: © 2020 Copyright - We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to To enhance the durability and consistency of plywood, the grain of each layer is oriented in a different direction. Okoume is lightweight, doesn’t easily deteriorate in wet conditions, and is handsome enough to add beauty to any boat. It also looks like real wood even if it is actually made of wood veneers and cores. It is actually made in such a way that it is not 100 percent wood. Choose between 8' and 8-1/2' wide CCA treated marine grade plywood 4-SHEET MINIMUM ORDER This CCA treated marine grade plywood has a B face and C bottom. This is not a high-density material, but it can still hold its own in the boat building industry and other construction industries. This saves a lot of construction time, money and effort since some of the building process are already eliminated. Its resin component makes fiberboard resistant to moisture. Solid oak he pointed out. You can use any conventional woodworking tools with these boards because they are very easy to work with, says its manufacturer. The alternative involves the use of a pourable material to cast a new transom core in place. wide and 141 in. There is a reason that boat builders put "Certified Coosa Board" decals on their transom! They claim that this material will revolutionize not only the boat building industry but all other industries that use plywood as the default material. [With 7 Examples]. Their natural characteristics make Birch plywood ideal marine plywood alternatives. Read on to learn more about the best marine plywood alternatives including their features and advantages. The term “exterior” means this type of plywood is intended for outdoor or exterior use. The process of making wax-resin fiberboard is quite similar to the others. Call & email photos to us to help how to repair your boat with the ONLY PERMANENT MATERIAL and FREE TECH ALL below. Its wet-resistant properties could be even more enhanced by sealing its surface with high-quality varnish, resin and sealant. They have good impact strength; they provide excellent bonding surfaces and are resistant to high temperatures and contamination. Now, if I were to rebuild a transom on an old boat I would probably go with that fancy Greenwood plywood just for the strength. It is also a good alternative to marine plywood because it is strong. What Are The Must Have RV Kitchen Accessories? Their boards can withstand the toughest marine conditions, so they claim, because they are environmentally stabilized. This material contains wax-resin that gives it more solidness and strength. Because of this it is important to use more layers of thin plywood to build up the required thickness. Fo… In producing this board, fibers of softwood are mixed with wax resin. Total layup thickness can continue as you see needed. Marine-grade plywood, often simply called marine plywood, is not what it's often claimed to be. It contains vertical stripes run along the length of the wood. This plywood is remarkably smooth. It is cheaper than marine plywood and much better than lumberyard exterior ply. Thread starter NSfishing; Start date Jul 20, 2020; Jul 20, 2020 #1 N. NSfishing Ensign. But it is still a long-lasting wooden board material. This material is made by combining wood fibers and cement. The bonded wood fibers are cut into wood sheets of standard sizes. This does not effect the durability of the plywood, it just may not look It is not actually made of 100% wood but is composed of small softwood fibers bonded together by a wax resin. What Is The Best RV Deep Cycle Battery For RVs & Travel Trailers? After this process, the wood panels are as strong and as durable as marine plywood. Day, Week, and Party Rate, Average Boat Speeds: Sailboat, Pontoon, & Cruiser. 12 Best Marine Batteries [Marine Battery Reviews], Best GPS for Marine Use - Our Top 7 Picks, Best Marine GPS Fishfinder Combo - Our Top 4 Picks, Boat Rub Rail Kits - Our 6 Best Picks [TACO Marine], Fastest Jet Ski – Top 11 [Stock and Production], Boat Brands to Avoid [4 of the Worst Boat Brands], How Much Does It Cost to Rent a Yacht? In this process, the boards are held together and compressed and the process of hydrogen bonding is introduced. Testing a couple things to use for a floor covering in my boat. The most common alternative to marine plywood is fiberboard, also known as medium density board or MDB. A Thermo-Lite executive claims that their boards can be used in many applications. (6 mm to 50 mm.). There are several grades and qualities in marine Plywood which directly affects its cost.. Why Marine Plywood. They are resistant to rotting. October 11, 2012. That is, it's not waterproof. Aside from fiberboard, there are other alternatives to marine plywood that are equally strong and long-lasting. On to fabricating the replacement transom: Most, if not all wooden transoms in smaller boats are made of plywood. The strength of this plywood is evenly distributed across the sheet, making it tough and durable. It is a good-quality, hardwood plywood made with waterproof glue, but since it's not treated with chemicals it is not rot-resistant. wide and 3580 mm. These wood sheets or panels are then subjected to high pressure and high heat. You can use it for curved surfaces, just like in some curved parts of a boat or in the boat flooring. The material is a polyester based liquid to which you … Plywood is less susceptible to rot than Balsa and has a much higher compressive strength. Whilst exterior ply may not be pre-sanded and visually free of imperfections, it should still use 100% waterproof glue and should be suitable for permanent exposure to outdoor environments. They call it 3M Reinforced Polyurethane Foam boards. Birch plywood is also an economical marine plywood alternative. A sheet of this material typically contains vertical stripes of grains running along the wood’s length. Thankfully, many alternative materials offer the same quality and features. The original transom had a dip in the middle where the motor is mounted. In this video I laminate two pieces of plywood together to make the transom for my boat. Compared to solid hardwood, FCB is very light. I'm assuming since you cannot buy wood of this thickness it was multiple sheets laminated together. The foam boards are reinforced with fiberglass so they can be used in marine applications. There are no such tendencies with these 3M foam boards. It has to transmit the full power of the engine to the rest of the hull, as well as carry the pounding of the hull back to the engine. Thus, if you really want to use ordinary plywood for marine applications, all you need to do is to use good quality ordinary plywood. Fiberboard is a popular alternative to marine plywood. Sandwiching multiple panels together is easy enough. Their densities range from 19.98 pounds per cubic feet to 39.95 lbs./cu. Exterior grade plywood. The best marine plywoods will also use plies made from wood that are highly stable such as Okoume and Meranti. What is the best marine plywood alternative? FCB can be used as a paneling material for different kinds of construction. The Cabosilthickened epoxy would be slippery and make overall alignment a challenge so I needed to consider how to do this with minimal fuss. It is a rot-resistant and lightweight material that can be used in semi-structural and structural constructions. Once the resin has bonded all the wood fibers together, the interim product is cut into several sheets. Tech Support Hours M-F 9-2 EST -email us photos and/or call 386-428-4722. The coosa board will act as an insulator between the aluminum and plywood and will continue to add stability to the transom. Another material that can be used in place of marine plywood is wax resin fiberboard. – Materials – For a load-bearing structure like the transom (holding a Yamaha T70), am I good with your standard 1.5oz CSM + 1708 glass, or should I … Some of these alternative products are more affordable than marine plywood, while others have higher prices. One affordable alternative to marine grade plywood is by using ordinary plywood and making it waterproof. HDP transoms are a rot proof alternative to marine plywood with the additional benefits of being stronger, stiffer and lighter. Crow Survival - All Rights Reserved. Another good marine plywood alternative is fiber cement board. There’s another way of producing this kind of fiberboard. Due to its high initial cost, boat builders and other construction companies may look for a marine plywood alternative that is just as good but without the hefty price. Product Failure, Economics and Safety When the transom on your boat fails in the middle of the lake and the motor falls off, the wisdom of having saved fifty dollars by buying cheaper pressure-treated plywood instead of marine grade plywood will come to question rather quickly. Nearly all plywood that is incorporated into the fiberglass construction of a boat is very likely AC plywood. The stringer system is the backbone of the bottom, the structure Depending on the brand and who your talking to, lots of stringer designs, grids and/or the like It is not made wholly of wood. The process is called hydrogen bonding. Exterior grade plywood may have more voids in the inner layers of veneer than true marine grade. One of the most popular alternatives is fiberboard. These sheets are perfectly straight and level. The manufacturer of King StarBoard claims that they are the original producer of marine-grade high-density polyethylene and their plywood is the standard in the industry. The great forces exerted between the engine and the hull come to a focus at the transom. Not only does this ma… This process enables the natural lignin in the wood fibers to do its work in strengthening the final product. This is due to its natural wood cross-grains. The lightest is 15 pounds per cubic foot, and the heaviest is 28 pounds per cubic foot. The combination of wood and cement makes it a good alternative to marine plywood for making boat floors, walls, and anything that needs to be moisture resistant. This is a good choice because it is also strong and very durable. This is the prime reason why it is quite expensive. Better grades also tend to … It is a PVC foam that is a good match for plywood as far as density goes. I would sandwich some marine plywood in a layup that looks like this coosa board west epoxy plywood west epoxy coosa board then a final layer of plywood with a finish of mat and west to seal it off from the elements. They are ideal for making cores and veneers for plywood. These foam boards are available in different weights. They are made from the finest polymers using the K-Stran proprietary process to ensure excellent flatness and consistency. All the edges of the plywood board must be protected and sealed by layers of oil/wax products, sealant or water repellent varnish. These boards also provide better adhesion compared to ordinary wood because their moisture content is very low. Marine Grade Plywood for Boat Building. But, of course, it can also be used for interior purposes. The resultant wood product is very strong. The material has a high tolerance for moisture. Its greatest advantage over other similar materials is its lightness. Sealing its surface with high-quality varnish, resin and sealant will make it wet-resistant. Transom material ? Due to its high initial cost, boat builders and other construction companies may look for a marine plywood alternative that is just as good but without the hefty price. This process makes each resultant product unique and different from the others. I broke it down into two steps. There’s no need for any changes after it is installed. Ribbon Grain Plywood. Just curious what the best type of wood to use for a transom. It is suitable for boat construction purposes if it will be used to make boat parts that are not fully submerged in water all the time. long (1510 mm. Water resistance, bending ability, and appearance are all key. Marine grade has no special waterproofing in or on the wood. In this article, I will list some of the best marine plywood alternatives. Most boat builders that still use plywood in the construction of the transom in a fiberglass boat use AC plywood. Being highly versatile, it is used in different applications, including boat building. They are rot-free, lightweight and strong – thus offering excellent lifetime performance. Marine Plywood Alternatives 1. Not a lot of marine plywood suppliers carry >3/4" ply. Joined Nov 13, 2018 Posts 9 Likes 2 Age 31. about to do the new floor in my Steigercraft, what's everyones opinions on type of plywood to use? This material is also strong and very durable. Exterior grade plywood is a good alternative to marine ply. Thermo-Lite boards are manufactured by Thermo-Lite Australia in partnership with Pacific Paint and Fiberglass. Marine Plywood is a renowned material when it comes to the construction of boats. Hardwood or Plywood ? How Much Does a Pontoon Boat Weigh? It can be used for interior as well as exterior walls. In other words, use four layers of 3/8″ or 6 layers of ¼” plywood to build up a 1½”-thick transom instead of three layers of ½”. Being designed for exterior use, the surface of this plywood is typically not very smooth and is not free of visual defects. The resultant product is a wooden sheet that is strong, moisture-resistant and is a good alternative to marine plywood. Seacast™ Facts. The rest of this article will discuss these other marine plywood alternatives. Like the fiberboard material, the FCB uses small wood fibers. This material is now used in building exterior walls, ceilings, cabinets and many more. Marine Plywood California Residents see Prop 65 Warnings Details Okoume Marine British Standard (BS) 1088 Okoume (gaboon) face & core veneers 1.5mm face veneers Equal or nearly equal laminations WBP (Water Boil Proof) Gluelines Lightweight plywood Excellent bending and finishing characteristics Lloyds Certified and Stamped Meranti Marine, British Standard (BS) 1088 Meranti face & core […] ... ↳ Boat House ↳ Jon and V boat Conversions and Modifications ↳ Motors ↳ Electrical ↳ Trailers; Jet Boats When the wood is made, broken down fibers of softwood are mixed in with a wax resin. 10 Best RV Ladders 2020: Brand Buying Guide, 10 Best RV Awning Covers: Top Picks and Buying Guides, The 10 Best RV Sewer Hose of 2020: Brand Buying Guide & Reviews, The 9 Best 12 Volt TVs for RVs: Brand Buying Guide & Reviews, The 10 Best RV Water Filters of 2020: Brand Buying Guide & Reviews, The 10 Best RV Surge Protectors of 2020: Brand Buying Guide & Reviews, The 10 Best RV Covers of 2020: Brand Buying Guide & Reviews. Both sides of these boards have handsome matte finishes. They are made in different thicknesses ranging from 0. Marine plywood is not the only material that you can use to build boats and other structures that are exposed to water. Instead of resin, hydrogen is used to bond the small wood fibers together. 23 inches to 1.97 in. They say this process is the most advanced manufacturing method of making consistently flat continuous sheets. It's very easy to work with (although you'll want some gloves and a mask because it does have fiberglass in the sheet). The result is a material equally or superior in rigidity at a fraction of the weight of plywood. In some ways it would make most sense for the plywood suitable for boat building to be the only plywood with a marine grade label. 30% - 40% lighter than plywood; This glue securely bonds the core and the ply veneer sheets together. Post by Lunker777 » 29 Apr 2009, 02:35. This all translates into increased boat performance under a range of conditions. Seacast™ is almost 3 times the strength of a marine plywood transom. Question I have a boat which has 1 5/8" thick pressure treated transom. The name of this plywood is Ribbon Grain because it looks like grains and has patterns like ribbons. This material offers weight savings that range from 30% to 60% compared to conventional plywood. This type of plywood is made from premium B/BB grade timbers of Northern European Birch trees. First I stacked all the dry panels together to determine the order I would glue them up. Their boards are made through their proprietary process they call K-Stran. Conventional plywood is prone to chipping and warping. To build up the strength of the wood, it contains a wax resin as well. Lignin is the cementing or reinforcing agent that binds the individual fiber cells together. By coating it with 100% waterproof glue, sealant and high-quality varnish or paint, this plywood can still be used for outdoor building constructions that will be permanently exposed to all kinds of weather conditions. Advantages of Coosa Board. The sheets come in sizes of 60 in. Seacast™ is Green! What is the best marine plywood alternative in the market? Plywood as a core material is the first in this list that is appropriate for transom repair. 3M has developed an alternative to marine plywood. The installed cost of these boards is less than that of fiberglass and other conventional marine woods. It needs to be exactly 1" think. They are ideal replacements for defective marine plywood installed on boats because they will not rot, splinter, swell or delaminate when exposed to the harshness of ocean weather and water conditions. It can be ordered at most good lumberyards. It is truly the premier decking & transom material in the marine industry. Certain maintenance work such as refinishing and repair is minimized since cleaning these boards are easy. Medium density fiberboard is particularly strong and has high durability. But this time, instead of glue or resin, cement is used to bond the wood fibers together. They are easy to work with, and they do not tend to warp. Best Answer: Coosa board is ideal for transoms, and most high end boat builders have gone to Coosa for the long term durability & weight savings. These boards, according to its maker, will not discolor or rot like teak, oak or any other solid wood. You can do this because all plywood, including the marine type, are made with the same adhesive, Type A Phenolic Bond glue line – EO formaldehyde rating. Buy the required materials and follow the legitimate instructions on how to properly waterproof that plywood sheet. It is also called a medium density board or MDB. The top is sanded smooth but may have small knots and the bottom will have unfilled voids. Fiberboard is made by mixing wood fibers with the resin wax. How to Tie a Boat Knot? This makes it one of the best marine plywood alternatives/. Adhesive recommendations for a treated plywood lay-up for a boat transom that will be submerged in water. How to Tie a Boat to a Dock? One of the most common alternatives to marine plywood is fiberboard. Plywood is so-called because it is made of thin layers of wood veneer or “plies.” These layers are glued together to achieve the desired thickness. Thanks Sure, marine plywood has already proven itself in this regard, but it is rather expensive. The name of this plywood is taken from the presence of what appears like grains in ribbon patterns in the surface of the board. Many Species of Wood Meet These Requirements, But we Believe that Okoume is the Best Possible Species for Use in Marine-Grade Plywood. The new transom … Its an aluminum boat with a wood transom. Their laminates will not peel off like the laminates of other plywood. The quality of the glue line determines the degree by which birch plywood and marine plywood can resist moisture. Alas this is not so. The transom of a power boat is the strongest part of the vessel. There are certain advantages to using these reinforced polyurethane boards. It is good for DIY aficionados who are searching for the right solutions to refurbish, upgrade or repair their boats, home or motorhomes. long). These boards are made of non-absorbent materials which makes them dimensionally stable and extremely durable. HDP transoms are backed by Lund’s lifetime warranty and available on … When I bought my boat this spring the previous owner was quite proud of the brand new transom he had installed. The wood used in plywood layers can also vary depending on the desired characteristics of the final product. These sheets will then be subjected to high pressure and high heat to even out their surfaces. Also known as “medium density board”, this material is very durable and strong. With the layers only roughly cut out, there was some variation in size between them. This type of material is called ‘marine plywood’ because it is typically used in the building of boats. new floor/transom regular plywood or marine grade? But since you can see the surface defects with your naked eye, it is wise to choose the best plywood in the lot if you will use it to build a boat. Â. What are the best marine plywood alternatives in the market? It is also highly flexible and easily workable. The adhesive used to bind these layers together is typically made of resin, the specifics which vary from one plywood to another. The 9 best marine plywood alternatives are as follows: Marine plywood is customarily expensive because of its strength and moisture resistant properties. 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And then research the proper method of waterproofing it. These boards, says the manufacturer, has all the features and advantages that builders of all kinds are looking for. While it is less durable than marine plywood, its lower price and higher quality make it a good option. These trees grow in cold climates and have close growth rings that make them exceptionally strong and durable. They are also available in sheets or boards measuring 4 feet by 8 feet. It is incredibly smooth and does not need any betterment or changes after installation. thought about coosa but having a hard time justifying the price. The resultant product is also strong, durable and moisture resistant.