Bond Class 3 glue line according to EN 314-1 and EN 314-2. Plywood is a frequently used material for external structural sheathing. Hardwood plywood can cost about as much as an equal quantity of solid hardwood, depending on grade and appearance. This is a softwood version of plywood that is most often used for construction. Definition of plywood in the Definitions.net dictionary. While OSB (Oriented Strand Board) is generally cheaper than plywood, it is heavier and not as stiff as plywood and can result in soft squeaky floors under weight.The biggest complaint against OSB is that it doesn't handle moisture very well so it is more suited for indoor use. EN 636 Plywood – Specifications (Published in 2003). Exterior Plywood for Structures. You can also choose various kinds of wood for exterior plywood, depending on the area in which you live. CDX Plywood: CDX plywood is produced by gluing together sheets of veneer, with each layer being glued the opposite grain to the one below it. Plywood bonds – EN314-2. Some plywoods have a third letter, X, that designates them for exterior use. While perhaps not as harsh an environment as on a boat, depending on where the structure is situated exterior plywood can take quite a beating. The BS EN 314-2 Plywood bonding quality requirements define three classes on the basis of test requirements that the plywood … Exterior Plywood . ... After the hurricane there was a severe regional shortage of plywood, especially exterior plywood. An extremely versatile product has its usage in a wide range of structural, interior and exterior applications – from form-work through to internal paneling. plywood (usually uncountable, plural plywoods) (uncountable) Construction material supplied in sheets, and made of three or more layers of wood veneer glued together, laid up with alternating layers having their grain perpendicular to each other. Requirements for plywood for use in exterior conditions is appropriate to these types of usage. Plywood is sold in various ratings, grades and sizes. Veneer definition, a thin layer of wood or other material for facing or inlaying wood. Douglas fir or pine trees are the most common source for exterior grade plywood. Many different grades of plywood exist, such as the most common variety, which is AA plywood. Each sheet will have two grades, such as AC. It is the strongest, toughest and the best quality plywood … In the second piece of concept art, the panels have lost enough definition to throw some doubt at to the presence of solar panels in the final product. The result is a wooden sheet that is STRUCTURAL PLYWOOD VOLUNTARY PRODUCT STANDARD PS 1-09 National Institute of Standards and Technology U.S. Department of Commerce This is the most common type of plywood, readily available at home centers. And the letter ‘X’ denotes that the glue which is exploited in the plywood is an exterior glue. In contrast, marine-grade plywood is ultimately is made for complete immersion in water, though many people do not necessarily need this level of protection. As a result, some plywood manufacturers now use low formaldehyde-emitting glue … Plywood definition is - a structural material consisting of sheets of wood glued or cemented together with the grains of adjacent layers arranged at right angles or at a wide angle. The plywood is made out of waterproof glue and is treated under intense pressure. But that doesn’t make it an overall extended plywood. This means that OSD is the perfect choice for applications such as exterior wall sheathing and roofing. Plywood for Exterior use is also available but may be less cost effective as both the resins and the wood veneers within the product must be durable in the long term. The first letter is the face veneer grade, and the second is for the back veneer. exterior plywood meaning and definition in real estate, A exterior plywood is a type of plywood made with waterproof glue. This allows water to settle in between the layers and can lead to early decay in the plywood. Wood - Wood - Plywood and laminated wood: Plywood and laminated wood are both made of layers (laminae) of wood glued together. Plywoods are produced using bonds. The types of bonds used are based on whether the plywood is for use in dry, humid or exterior conditions. These uses are designated Hazard Class 3 in terms of the risk of biological attack (mould, stain, decay). This European Standard specifies the requirements for plywood for general purposes or structural application in dry, humid or exterior conditions. See more. They are used in the construction of a house exterior region or outdoor furniture. The glues used in exterior plywoods are much more resistant to moisture than interior plywoods. The marine plywood is only available in A-A grade. Bond classification is Exterior. Plywood is a material manufactured from thin layers or "plies" of wood veneer that are glued together with adjacent layers having their wood grain rotated up to 90 degrees to one another. In plywood, WBP stands for Weather and Boil Proof, the category of glue used to make the most durable plywood. BS EN 636-3 Plywood – Specifications. Exterior plywood is glued together with adhesives that are meant to survive in wet or moist areas. Exterior – Bond Class 3. AC plywood is a building material constructed out of slender wood sheets pressed together. plywood (Noun) A specific grade or type of this construction material. It’s many uses in our day to day life and almost everything we see around us form of plywood. Once again, nearly all grades are available, with A-C, B-C, and CDX the most common. A sanded plywood panel with A-grade face and back plies and C-grade inner plies. The basic difference is that in plywood the grain of alternate layers is crossed, in general at right angles, whereas in laminated wood it is parallel. 3. Most people chose this as the best definition of plywood: A structural material mad... See the dictionary meaning, pronunciation, and sentence examples. It’s made up of several thin layers of wood, or plys, which are laid in opposite directions to one another. Meaning of plywood. However, because of its low-quality exterior, CDX plywood is not often used for pieces of furniture that require a … 7. It is a common material due to its durability and power. A plywood subfloor generally uses 1/2-inch to 3/4-inch-thick sheets of plywood that have one rough side (which faces down) and one smooth side, which faces up. This article by Dr Vic Kearley of TRADA seeks to clarify the situation and outline improvement actions that are underway.. APA trademarked panels are produced in two bond classifications, Exterior and Exposure 1, both meeting the requirements of EN 314: Plywood – Bond quality. From highest quality to lowest, here’s what to look for with grades of plywood… plywood. Finally laminated plywood is an excellent option when you are in need of using plywood board that will see a lot of weather exposure. Standard exterior plywood is permitted to have knots on the layers in between the two veneers. In addition to these structural uses, CDX plywood is also commonly used for minor utility purposes, such as rudimentary shelving in basements, storage cabinets, or sheds. Plywood Sheathing Image Credit: peacocklumber.ca. Examples include cladding, fascias, exterior doors. It is an engineered wood from the family of manufactured boards which include medium-density fibreboard (MDF) and particle board (chipboard). This creates a much more stable and structurally sound sheath that can be used over the exterior. After the hurricane there was a severe regional shortage of plywood, especially exterior plywood. There are five important ratings that convey where and how to use plywood: Exterior, Exposure 1, Exposure 2, Interior and Structural 1. How to use veneer in a sentence. But plywood has many advantages: •Dimensional stability.Crossbanded layers and balanced construction mean that hardwood plywood won't shrink, swell, or warp as much as lumber. Make your selection based on the type of project you’re working on. Plywood Glues - Some consumer advocate groups are concerned about the possible health hazards of adhesive chemicals used in plywood—especially urea formaldehyde and phenol formaldehyde. Covers APA plywood grades: C-C (CCX) ; A-C (ACX) ; B-C (BCX); Sturd-I-Floor and C-C plugged. Veneer definition is - a thin sheet of a material: such as. What does plywood mean? Exterior Grade Plywood. The definition of the term exterior grade means that a water-resistant adhesive is … Search exterior grade plywood and thousands of other words in English definition and synonym dictionary from Reverso. Numerous hardwood species are also available in exterior varieties. WBP glues are made with melamine or phenolic resin. Marine Plywood. Exterior plywood sheets typically have several veneers glued together, classifying them as multi-ply. The sheets are generally 4 x 8 or 4 x 12 feet in size. Other options for covering the exterior plywood surface is to use some sort of siding or other cover material that masks the ugly but efficient wood underneath. Plywood Ratings . There is some confusion among specifiers concerning the properties of "exterior grade" plywood. A-A Exterior. Plywood forms of various layers of wood (called plies or veneers) glued together. 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