BS 1088 plywood must use a glue, which has been tested and shown to be highly resistant to weather, micro-organisms, cold and boiling water, steam and dry heat. Poor quality plywood. The capacity of a plywood to not de-laminate under boiling is not only dependent on the quality of the glue but also on the materials used and the care which was used in the manufacture. Orders of Marine Plywood totaling more than 100 lbs, will require a rate quote. It is a marine plywood standard using the same glues, but has somewhat more relaxed requirements as to the quality of the veneers. The thickness and number of plies is also controlled. INCHES Millimeters PW ALUM STEEL. Selected Okoume throughout plywood meeting the British Standard, BS 1088:2018 with the Lloyd's Register Type Approved certificate, Marine Ply is widely recognised by professionals in boat construction: racing or recreational boats, manufacture of kits for kayaks, canoes and wooden boats. Whilst naturally resistant to decay and the ingress of moisture, it is still important to ensure that once in situ both the edges and faces of the plywood are well sealed in order to increase service life. Marine plywood is a great wood to work with, with a smooth and knot-free surface that’s ideally suited to staining, painting and lacquering for a professional finish. Estimate how many mouldings you need to trim a room using the trim and moulding calculator. Weight per 4' x 8' 15. The charts below show the weight of plywood panels at different thicknesses. In addition to thickness, the type of plywood is a major factor in how much it weighs. Youtube video about making Marine Plywood. However, it is a good-quality, hardwood plywood made with waterproof glue. Plywood sold as "void-free" does not have voids hidden in the wood layers. They are also available in sheets or boards measuring 4 feet by 8 feet. Bright finishes are not necessarily as successful as with the BS 1088. They set voluntary standards and many manufacturers adhere to them. Plywood panels rated as Exterior but not Marine, such as A-B, A-A or C-C Exterior, may contain any other permissible species and contain C-grade veneer. Different species of woods have varying densities. Face Veneer thickness -- For any three-ply construction, each veneer sheet will not be any thinner than 1/8 of the total thickness of veneers assembled dry. The Formula Engineers have rounded-off weight calculations for plywood to square foot calculations, and have decided that, for engineering purposes, a generic square foot of 3/4-inch-thick hardwood plywood weighs 2.3 pounds. Squareness -- The lengths of the diagonals of a sheet shall not vary by more than 0.25% of the length of the diagonal. Marine plywood is available in the following grades: A-A, A-B, and B-B. Note the weight may greatly impact the price. Santa Clara Marine Plywood Built to Last. Santa Clara Marine Plywood by SMWPI, is the marine plywood brand name synonymous to unmatched quality. See the Gallery. On the other hand some manufacturers claim to be up to this standard but are not. There are standard BS tests for the glue. The face/back veneers of plywood weight practically much less than the core veneers. Our Marine Okoume plywood has a Lloyd’s of London stamp that certifies it to be BS 1088. Some logic will make it apparent that switching smaller designs from plywood to steel is ill advised. Although a British Standard, it is used by marine plywood manufacturers world wide. It has a Type A (wbp) phenolic bond glue and is manufactured from woods based on density, bending strength, impact resistance and surface finishing characteristics. If the plywood is required structurally then this becomes a messy problem indeed. Edge joints are limited, and end joints are not permitted. Multi-Ply Construction-- This applies to boards thicker than 4.8 mm (3/16"). Manufactured with an A-grade sanded surface face on both sides, as per the AS/NZS 2272 standard, with no core gaps and a permanent waterproof A-bond glue. the approximate weights are: 4mm Plywood: 2.24 kg/m2 6mrn Plywood: 2.36 kg/ma 9mm Plywood: 5.04 kg/m2 12mm Plywood: 6.72 kg/mž . Most of us would prefer to understand the options a bit better. Douglas Fir marine plywood is very strong, bends well, and is of medium weight. Weight may vary slightly by manufacturer and product. How many sheets is 3/4 plywood? Video of the Day A typical 4’ x 8’ sheet of 1/2-inch Marine Plywood weighs around 51 lbs. It is constructed with exterior pholic resin glue. This makes it one of the best marine plywood alternatives/ These foam boards are available in different weights. Its construction is such that it can be used in environments where it is exposed to moisture for long periods. It can be cut to size easily with just a handsaw or an electric saw, so it’s great for DIY projects. The precise thickness of the panel is a major factor in the weight. Marine Grade Plywood. Lloyds do not continuously inspect production lines or individual plywood sheets. Okkume is a prime example of a widely used plywood wood which is not particularly resistant to rot and fungus. Its quality is known to withstand any weather condition makes it the ideal plywood for boat-making, home building and furniture-making. But that’s what separates Goldcore from the rest. A 4-by-8 sheet of plywood equals 32 square feet, so 32 times 2.3, is … VAT. 1.4 standard sizes Panels are obtainable in the following standard dimensions Lengths: 1800mm, 2100mrn and 2400mrn Phenol Formaldehyde which is often used in marine plywood. A 4-by-8 sheet of plywood equals 32 square feet, so 32 times 2.3, is just over 70 pounds per sheet. BS-1088 grading requires the same species throughout (face, back, and core), defect-free A Grade Face veneer with no repairs. What is the weight of marine plywood? The plywood does not have to be of British Manufacture. Marine-Grade Plywood For boat-building applications, a special grade of plywood, APA Marine Exterior, is available. Interesting to see the process though. Voids not only weaken the plywood but create a ready path for water infiltration. The BS 1088 standard is a marine plywood specification that applies to plywood made from untreated tropical hardwood veneers that have a stated level of resistance to fungus growth. Click to see full answer. Sure, marine plywood has already proven itself in this regard, but it is rather expensive. Compared to other marine and exterior hardwood plywood’s, the plywood offers a weight saving of up to 25%. They help set standards. In other words Lloyd's ensure that the standard in production is met. I'm not an engineer or a chemist. Marine plywood is manufactured from selected species based on density, bending strength, impact resistance and surface finishing characteristics. Learn more about the actual thickness of plywood. Lloyds do not continuously inspect production lines or individual plywood sheets. Aquatek marine plywood is manufactured with Keruing faces to ensure both strength and durability, while the core is comprised of uniform color light red Meranti to maintain the strength and durability to weight ratio. Okoume Marine Plywood The Okoume marine grade plywood is lightest in weight among all the marine plywood products available at Edensaw. Core veneers requirements are similar to face veneers except that slits are allowed as long as they are small. Marine plywood is a type of hardwood plywood. Both face and inner plies are constructed from whole piece, color matched, Meranti or Keruing veneers. Poor bonds, overlaps and pleats, and gaps in faces are not allowed. Marine plywood is a premium quality plywood made of selected wood species based on density, bending strength, impact resistance and surface finish characteristics. If a ply needs to be joined inside it can not be butted. 1.75 lbs. Advantages of 9mm Marine Plywood. BS-1088 grading requires the same species throughout (face, back, and core), defect-free A Grade Face veneer with no repairs. For this reason Marine Grade Ply must not have voids. A sheet can cost $10 to $50, as opposed to the cost of marine plywood, which ranges from $70 to over $200 a sheet. Unfinished Marine Baltic Birch whole-piece face veneer plywood in thicknesses from 6mm or 1/4″ to 24mm or a full 1″ in six different thicknesses. Typically, okoume is combined with lightweight poplar plywood and the resultant panel described as 'okoume/poplar combi plywood' or 'okoume/poplar twin plywood'. Marine Ply . Boats have been successfully built using higher grade exterior plywood. Marine Plywood Okoume (aucoumea klaineana) also known as gaboon or combogala, is only found in Gabon, the Congo and Equatorial Guinea in Africa. WarriorII, Depending on how wet the board is, you can expect it to weigh between 60 and 66 pounds. Since it's not treated with chemicals it is not rot resistant. In order to be a Marine Grade the plywood has to conform to a certain number of criteria: Here is a Youtube video about making Marine Plywood.It is how one company makes it and not necessarily representative of all marine plywood but it is interesting. Add and subtract feet, inches, fractions, centimeters, and millimeters with ease. Marine Plywood manufactured to AS/NZS 2272 standard, is a structural plywood intended for hulls of boats and other marine applications. There is a possibility of voids. It very often has an epoxy coating, often with glass cloth as well. Hydrotek Meranti Marine Grade Plywood $ 94.98 - $ 277.98 $ 56.99 - $ 166.79 Hydrotek Meranti Plywood, which is commonly known as Philippine Mahogany or Lauan Plywood… The glues are usually essentially the same as the marine grades. Especially when weight has to be taken into consideration. Hydrotek Marine Plywood is manufactured utilizing BS 1088 specifications, it is a multiply type construction, with balanced internal plys and thick (1mm before sanding) face veneers, and water proof phenolic glue. Read on to learn more about what impacts the weight and find the weight for different varieties and thicknesses of plywood. A revolutionary plywood that takes construction and fitouts to a whole new level, Goldcore is up to 38% lighter than standard plywoods. Calculate the weight of different species of lumber using our lumber weight calculator. "APA – The Engineered Wood Association is a nonprofit trade association of the United States and Canadian engineered wood products industry. Often a high end exterior ply will do as well particularly in area that do not particularly stressed. Poor quality plywood. Manufacturing Defects are strictly controlled. They have extensive publications that can be downloaded for free but you need to register and sign in. Douglas Fir marine plywood is very strong, bends well, and is of medium weight. The actual weight of plywood varies by product and manufacturer which can make it challenging to predict the weight perfectly. A piece of plywood weighs approximately 600kgs per m³. A wide variety of weight for marine plywood options are available to you, such as graphic design, total solution for projects, and others. The grain in the veneers should be reasonably regular. Easy to work with for tooling, these are also light and strong and ideal for weight savings for light weight craft. Face veneers must be free of knots except "sound pin" knots, (no more than six in any one square foot,) the average of pin knots cannot exceed 2 per square foot over the whole surface of the plywood sheet. It is also easier to find. You can also choose from 1 year, 3 years, and n/a weight for marine plywood, as well as from e1, e0, and e2 weight for marine plywood, and whether weight for marine plywood is poplar, birch, or pine. Re: 3/4 vs 1/2 marine plywood weight? Browse our range of trade standard plywood boards such asStructural Hardwood Plywood, Shuttering Plywood or Selex Structural Plywood. Marine Plywood manufactured to AS/NZS 2272 standard, is a structural plywood intended for hulls of boats and other marine applications. Marine Plywood manufactured to AS/NZS 2272 standard, is a structural plywood intended for hulls of boats and other marine applications. The calculation is simple: Length x Width x Height x 600. Depending on the grade, knot size and frequency is controlled. This is an Australia / New Zealand standard. That is, it's not waterproof. Finished size The length or width of a standard sized sheet can not be less than the stated size nor more than 6.3 mm (0.25") larger. I don't claim to be an expert. It is usually made from Western Larch or Douglas Fir wood. Given sufficient time and use it may be that the protective fibreglass layer becomes damaged allowing water to permeate the surface and begin to rot the underlying plywood. Advantages of Regular Plywood over Marine Plywood. This plywood is graded II/III and has ALL BIRCH solid inner plies with no voids for durability and strength. Marine Plywood must withstand the 72-hour boil test as laid down in AS 086. Okoumé Marine plywood is graded as being compliant with BS-1088, which is a British Standard for marine plywood. The outside veneers vary a great deal depending on the chosen grade. None of the marine species are naturally durable and preservative treatment will be required. This web site reflects my personal ideas and doesn't represent anyone else's point of view. Hydrotek is used in … Here is a somewhat inaccurate and simplified "How it's Made " video on Marine Plywood. Many plywood are made according to the BS 1088 marine plywood standard but they have not all gone to the trouble and expense of getting certified. Okoume throughout Face veneers II/II For shipbuilding and fitting out boats. Asked by Tim May 31, 2020 1 Water & boil proof glue (WBP), Whole piece rotary cut face, Minimum 1.2mm face veneer thickness . It has a Type A (wbp) phenolic bond glue and is manufactured from woods based on density, bending strength, impact resistance and surface finishing characteristics. Use our plywood calculator to find how many sheets of plywood you need for your project. 4' x 16' sheets are scarfed from 2 - 4' x 8', click to see scarf joint. Both face and inner plies are constructed from whole piece, color matched, Meranti or Keruing veneers. Back veneer is to have no more than two repairs. Click to sort by plywood weight or percentage. There are many exterior grades being manufactured. So the density of plywood is mainly depended on the timer species of the core veneers . Plywood assembled from it needs to be able to withstand boiling in water for several hours without de-laminating. How much does a piece of plywood weigh? Their main focus is construction. 25. The Moisture content of the plywood must fall between 6% and 14% when it leaves the factory. Are You Planning a Trim Carpentry Project. Please Note: Prices, promotions, styles and availability may vary by store and online. Better grades also tend to be lightweight, strong, and virtually free of defects. Our calculators can simplify your woodworking project layout and estimation. weight for different varieties and thicknesses of plywood, Feet and Inches Length Measurement Calculator. If you do consider switching materials, review the chart below. Engineers have rounded-off weight calculations for plywood to square foot calculations, and have decided that, for engineering purposes, a generic square foot of 3/4-inch-thick hardwood plywood weighs 2.3 pounds. Its quality is known to withstand any weather condition makes it the ideal plywood for boat-making, home building and furniture-making. Any glue used for marine plywood or for that matter also used in exterior use has to conform to the a stringent test. Get results in imperial and metric measurements. True hardwood plywood is made with thin layers of 100 percent hardwood, which generally is stronger and harder and has a finer grain than softwood. Good luck on your decision. Not all plywood is the nominal thickness after drying. Pin knots and edge joints are also allowed. Available in five densities ranging from 15 pounds to 26 pounds per cubic foot, Reinforced Polyurethane Foam complements 3M’s existing line of … Orders of Marine Plywood totalling 100 lbs or less will ship to the Lower 48 states for a flat-rate of $148. The calculation is simple: Length x Width x Height x 600. It is approximately 25% lighter than regular Marine Plywood. The main issue with using a non-marine plywood is the eternal problem of time. Usually 4 kinds of timber species are used to manufacture the cores of plywood ( film faced plywood ) … The marine plywood is manufactured from 100% Okoume/Gaboon throughout, which is sourced from sustained yield forest estates. You may not always need the absolute best grade of plywood. As usual it boils down to you get what you pay for and it pays to go to a reputable dealer. This material offers weight savings that range from 30% to 60% compared to conventional plywood. 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