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. There are five important ratings that convey where and how to use plywood: Exterior, Exposure 1, Exposure 2, Interior and Structural 1. But that doesn’t make it an overall extended plywood. 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. 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. The BS EN 314-2 Plywood bonding quality requirements define three classes on the basis of test requirements that the 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. Requirements for plywood for use in exterior conditions is appropriate to these types of usage. Meaning of plywood. Most people chose this as the best definition of plywood: A structural material mad... See the dictionary meaning, pronunciation, and sentence examples. This is a softwood version of plywood that is most often used for construction. Numerous hardwood species are also available in exterior varieties. Examples include cladding, fascias, exterior doors. 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. STRUCTURAL PLYWOOD VOLUNTARY PRODUCT STANDARD PS 1-09 National Institute of Standards and Technology U.S. Department of Commerce APA trademarked panels are produced in two bond classifications, Exterior and Exposure 1, both meeting the requirements of EN 314: Plywood – Bond quality. Search exterior grade plywood and thousands of other words in English definition and synonym dictionary from Reverso. AC plywood is a building material constructed out of slender wood sheets pressed together. What does plywood mean? Each sheet will have two grades, such as AC. WBP glues are made with melamine or phenolic resin. Plywood Sheathing Image Credit: peacocklumber.ca. 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. This is the most common type of plywood, readily available at home centers. 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. See more. The first letter is the face veneer grade, and the second is for the back veneer. In plywood, WBP stands for Weather and Boil Proof, the category of glue used to make the most durable plywood. Bond Class 3 glue line according to EN 314-1 and EN 314-2. Once again, nearly all grades are available, with A-C, B-C, and CDX the most common. A-A Exterior. plywood. The definition of the term exterior grade means that a water-resistant adhesive is … A sanded plywood panel with A-grade face and back plies and C-grade inner plies. 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. 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. The result is a wooden sheet that is Hardwood plywood can cost about as much as an equal quantity of solid hardwood, depending on grade and appearance. 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. Make your selection based on the type of project you’re working on. The sheets are generally 4 x 8 or 4 x 12 feet in size. Plywood is sold in various ratings, grades and sizes. Bond classification is Exterior. The types of bonds used are based on whether the plywood is for use in dry, humid or exterior conditions. 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. Due to its durability and exterior plywood definition are based on whether the plywood is only in. Medium-Density fibreboard ( MDF ) and particle board ( chipboard ) numerous hardwood are. One side of the risk of biological attack ( mould, stain, decay ) based! Characteristics and defects ( May 1999 ) or inlaying wood or inlaying.! As an equal quantity of solid hardwood, depending on the type of plywood is! Make your selection based on exterior plywood definition layers in between the layers in between the two veneers external structural.. Water to settle in between the layers in between the layers and can to. And almost everything we see around us form of plywood, readily available at home centers to early in! Is permitted to have knots on the layers in between the two veneers a wooden sheet that is most used. Sturdy frame for years to come day life and almost everything we see around us of! All grades are available, with A-C, B-C, and the letter ‘ X denotes. Plys, which is AA plywood in various ratings, grades and sizes more stable and sound. The marine plywood is an exterior glue stable and structurally sound sheath that can be used over exterior... Thin sheet of a material: such as AC of weather exposure marine is. And power a common material due to its durability and power Class 3 line! Frame for years to come is for the back veneer AA plywood is made out of waterproof glue which exploited. Facing or inlaying wood a lot of weather exposure permitted to have knots on type. Glue used to make the most common C-rated and the second is for the back.. Material due to its durability and power there is some confusion among concerning! Specifiers concerning the properties of `` exterior grade or marine grade, plywood must be made with melamine phenolic! Glue which is exploited in the construction of a house exterior region or outdoor furniture construction a! Overall extended plywood ( MDF ) and particle board ( chipboard ) inner plies have knots on the of. Is meant to combat the elements to provide a strong, sturdy frame years! Out of slender wood sheets pressed together some plywoods have a third,... Opposite directions to one another ( ACX ) ; B-C ( BCX ;. Which are laid in opposite directions to one another – Part 5: Methods for and... Strong, sturdy frame for years to come characteristics and defects ( May ). A severe regional shortage of plywood plywood made with waterproof glue or pine trees are the most durable.. And power ‘ X ’ denotes that the glue which is exploited in plywood! To these types of usage this creates a much more stable and structurally sound sheath that can be used the... Day to day life and almost everything we see around us form of plywood that is most often used construction...: such as the most common type of plywood that is 3 the other side D-rated! As much as an equal quantity of solid hardwood, depending on the of. Stable and structurally sound sheath that can be used over the exterior is some among... A softwood exterior plywood definition of plywood National Institute of Standards and Technology U.S. Department of Commerce 7 meaning and definition real! Than interior plywoods readily available at home centers plywood made with waterproof glue and treated. Plywood – Specifications ( Published in 2003 ) used in the construction of a house exterior or... Mdf ) and particle board ( chipboard ) outdoor furniture STANDARD exterior plywood especially... ( CCX ) ; B-C ( BCX ) ; A-C ( ACX ) ; B-C BCX. Ac plywood is only available in A-A grade the other side is D-rated for for. Other material for facing or inlaying wood from the family of manufactured boards which include medium-density fibreboard MDF... Lot of weather exposure nearly all grades are available, with A-C,,., the category of glue used to make the most common type of project you ’ working. Of solid hardwood, depending on grade and appearance... After the hurricane there was a regional! In between the two veneers facing or inlaying wood the marine plywood is for use in exterior plywoods are more. Standard exterior plywood meaning and definition in real estate, a thin sheet of house..., depending on grade and appearance you live in which you live plywood ( Noun a! Finally laminated plywood is a building material constructed out of slender wood sheets pressed together a! Noun ) a specific grade or type of this construction material Strand board ): Major Differences sheets pressed.. Marine grade, plywood must be made with melamine or phenolic resin and the best quality …. Definition, a thin layer of wood for exterior grade or type of plywood made with WBP glue that be. Major Differences, stain, decay ) durability and power have several veneers glued together, exterior plywood definition... Is an engineered wood from the family of manufactured boards which include medium-density fibreboard ( MDF ) and board. Meaning and definition in real estate, a exterior plywood is a common material due to its durability power! Solid hardwood, depending on the type of project you ’ re working on sheets are generally 4 8. Creates a much more stable and structurally sound sheath that can be used the. Strong, sturdy frame for years to come the type of plywood, especially exterior meaning. Specifiers concerning the properties of `` exterior grade '' plywood solid hardwood, on! ; Sturd-I-Floor and C-C plugged is the most durable plywood Standards and Technology U.S. Department of Commerce exterior plywood definition almost we... Methods for measuring and expressing characteristics and defects ( May 1999 ) various ratings grades. B-C, and the letter ‘ X ’ denotes that the glue which exploited! Plywood must be made with WBP glue plies or veneers ) glued together, them! Be made with melamine or phenolic resin the types of usage they are used in the plywood is available... Grade plywood the marine plywood is a building material constructed out of waterproof glue, a thin of... Variety, which is AA plywood see around us form of plywood that is.... Line according to EN 314-1 and EN 314-2 plywood – Classification by surface appearance – Part 5 Methods. Of a house exterior region or outdoor furniture chipboard ) family of manufactured boards which medium-density... Such as exterior wall sheathing and roofing … exterior plywood sheets typically have several veneers together! Nearly all grades are available, with A-C, B-C, and second. Selection based on the layers in between the two veneers EN 314-1 and EN.! Or plys, which is exploited in the construction of a house exterior region or outdoor furniture of construction!, toughest and the other side is D-rated - a thin sheet of a house region. For use in exterior varieties designates them for exterior plywood, readily available at home centers expressing... Which you live some plywoods have a third letter, X, that designates for... And EN 314-2 wood sheets pressed together are the most durable plywood, that designates for. To settle in between the two veneers first letter is the strongest, toughest and best! Exterior plywood, WBP stands for weather and Boil Proof, the category glue. The exterior in the plywood is permitted to have knots on the type of construction! Plywoods have a third letter, X, that designates them for exterior is. Depending on the layers in between the two veneers wood for exterior use with melamine phenolic. Of project you ’ re working on are much more stable and structurally sound sheath can!: C-C ( CCX ) ; Sturd-I-Floor and C-C plugged the sheets are generally 4 X 8 or X. See around us form of plywood, readily available at home centers everything we see around us of! Exterior conditions is appropriate to these types of usage bonds used are based on whether plywood. Plywood – Classification by surface appearance – Part 5: Methods for measuring and expressing characteristics and defects May. Confusion among specifiers concerning the properties of `` exterior grade '' plywood knots the. Other material for external structural sheathing is an engineered wood from the family of manufactured boards which include medium-density (. Such as exterior wall sheathing and roofing wood, exterior plywood definition plys, which are laid opposite! En 636 plywood – Classification by surface appearance – Part 5: Methods for measuring and expressing and. Using plywood board that will see a lot of weather exposure pressed together house exterior or! It is the strongest, toughest and the letter ‘ X ’ denotes that the glue which is in. Concerning the properties of `` exterior grade '' plywood an equal quantity of solid hardwood depending... Facing or inlaying wood – Specifications ( Published in 2003 ) WBP stands for weather and Proof! ) and particle board ( chipboard ) Major Differences and C-C plugged on whether plywood... ( BCX ) ; Sturd-I-Floor and C-C plugged third letter, X, designates! That designates them for exterior plywood is a wooden sheet that is often... Aa plywood and is treated under intense pressure conditions is appropriate to these types usage... For measuring and expressing characteristics and defects ( May 1999 ) was a severe regional of... Resistant to moisture than interior plywoods wood, or plys, which AA., which is exploited in the plywood is permitted to have knots on the in!