PLYWOOD GRADING INFORMATION Timber is a natural product and has an infinitely varying range of characteristics and appearances. What is CDX plywood? The videos and photos found in lessons also help the user to have a better understanding of automotive practices." Your source for the latest products and trends within the architecture, construction, interior design, and building materials industry. Different types of wood can offer different pros and cons, and while CDX plywood may be the best pick for one DIY project, it may not hold up for other home construction tasks. Herein, the letters C and D denote the quality of the surfaces (both front and back). CDX stands for “C-D Exposure 1 plywood”. CDX plywood is the lowest class of plywood and is often used in the construction industry or as a base for other materials. Additionally, what kind of wood is CDX plywood? If you are set on using CDX plywood for your next home building project, then it is time to explore the options available in terms of size, thickness, and availability. Because plywood is rated as shop grade because of defects, almost any type of plywood can end up in the shop grade bin. For 15/32 and 1/2-inch the Standard provides for 3-, 4-, and 5-ply panel construction. Also, if my memory serves me correctly I believe the "X" stands for Exposure 1 not Exterior, and CDX is not recommended for long-term exterior exposure. … CDX is the most common exterior plywood grade. This creates a much denser and thicker piece of wood. submitted to our "DoItYourself.com Community Forums". As far as the plywood, BC grade Douglas Fir would be best, but I’m sure that a good brand of spruce CDX would be just fine, that’s what I just used for a floor repair in my own house just last week. TT-037A February 2007 Page 1 of 2 7011 South 19th Street • Tacoma, WA 98466 Telephone (253) 565-6600 • Fax Number (253) 565-7265 Knowing about CDX plywood will help ensure you are using the correct materials for your next project. As a result, some plywood manufacturers now use low formaldehyde-emitting glue … This plywood is made to function better outdoors - deals with temp changes and moisture better than other forms of plywood. Plywood as we know it has been produced since early in the 20th century. Plywood is a sheet material manufactured by gluing together several thin layers of softwood or hardwood veneers. Some mistakenly think the "X" stands for "exterior"—which is not true, exactly. Common Plywood Dimensions. The result is a wooden sheet that is proportionally as strong as steel, without the weight that comes along with concrete or steel. A plywood grading system is used to specify aspects of the finished look of the plywood, thus allowing the user to select a material that is suitable for their application. Any form of plywood is made from a number of plies, which are pressed tightly together to form a stronger and larger piece of plywood. 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. CDX stands for class C to D exposed plywood. A common error is thinking that it's an exterior plywood, which is a mistake many DIY beginners make. OSB which stands for oriented strand board, is composed of wood chips bonded together with resin and glue. CDX plywood is still a great piece of plywood if you are looking to build something that does not require a pristine surface. © Innovative Building Material | All Rights Reserved | Privacy Policy. The difference is in the glues that are used to bind the plies, or layers of the plywood. Appearance stamps on plywood range from cabinet-grade (A) to construction grade (C and D). Your email address will not be published. When it comes to CDX plywood, the ‘X’ signifies exposure, which means that while CDX plywood is slightly water-resistant, it is not waterproof, and therefore the CDX plywood can only withstand a limited amount of moisture over a short period of time before showing signs of degradation. Now you're all set. Because of these differences, OSB is generally the better choice for exterior roofing projects and shingle foundations. CDX PLYWOOD 201826_AtlasRoof_DidYouKnow-CDX_Plywood-ATL-1713F What do the letters mean? Depending on the quality of glue used, the plywood will be more or less susceptible to damage due to exposure. Form No. to this site, and use it for non-commercial use subject to our terms of use. "CDX" should only be used for applications as outlined under Exposure 1 above. We take the mystery out of the plywood grading system and show you what you will get in each grade. We will only send you awesome stuff!Privacy Policy. For example, consider a 15/32 or 1/2-inch C-D Exposure 1 (CDX) plywood meeting the requirements of U.S. CDX plywood is an exposure plywood. CDX plywood is created by bundling layers of wood together. This Plywood is CDX graded meaning the “C” side has a more rough surface with visible knots and splits. It’s typically covered with bricks or shingles for roofs, storage bins, or garages. Primary Sidebar. Rain and snow can serve as a serious threat to the integrity of a structure made with CDX plywood. OSB was introduced in the 1970s and steadily gained market share from plywood, surpassing plywood in production in 2000. “X” in CDX is for the purpose plywood should be used. Because of its chemical properties, however, OSD is … Plywood sheathing delivers outstanding stiffness, strength and versatility. CDX is a type of plywood. “CDX” is not the name of a plywood grade. This includes interior and exterior plywood of any thickness. CDX plywood is the lowest class of plywood and is often used in the construction industry or as a base for other materials. It cannot stand prolonged periods of exposure to water so it must be covered by another material. One of the main grading systems when talking about the plywood is the smoothness of its front and back sides. That is, C and D describe the two sides of the plywood sheet. When you think about it, this single piece of CDX plywood actually has a lot of elements to consider! How Contractors Keep Up with Building Trends, Leaking Skylights: Why It Happens and What to Do About It. After all, because of the composition of wood grain that is used during CDX plywood production, this type of plywood is able to absorb moisture at a certain level without warping, splitting, or rotting. However, because of its low-quality exterior, CDX plywood is not often used for pieces of … I've got a plywood question for all you wood pros out there...I've built a ... 10' long section of house exterior wood wall rotted. One of the main grading systems when talking about the plywood is the smoothness of its front and back sides. As you can see, CDX plywood offers a lot of pros and cons. Without veneers applied to the exterior, OSB board is much more affordable than CDX plywood. It comes in 3/4-, 5/8- and 1/2-inch thicknesses. However, when used on the interior, such as in a bathroom, laundry area, or another room that experiences frequent humidity, the composition of CDX plywood should be able to hold up reliably. home improvement and repair website. 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. Plywood comes in a wide range of classes, which can quickly determine its quality. Website operating Every piece meets the highest grading standards for strength and appearance. CDX plywood can tell you a lot about how it is made simply in its name. In addition to the plywood grades, there are four common plywood bonding types. Please note that Apa Rated Plywood Sheathing Exposure 1 is not the only meaning of CDX. The Spruce / Ran Zheng. CDX is listed in the World's largest and most authoritative dictionary database of abbreviations and acronyms The Free Dictionary – Caleb Kautz, Automotive Student "The program is very knowledgeable and has activities that keep a reader’s mind focused. Anything that can prolong the performance and longevity of a product is a big plus when it comes to home ownership and maintenance, so CDX plywood that has been treated with extra protective qualities is a popular choice. Hardwood plywood can cost about as much as an equal quantity of solid hardwood, depending on grade and appearance. How is Plywood Made? ACX plywood is a version of a plywood panel that has a very specific makeup, with one rough face and one sanded face on either side. The letter “X” means the glue of the plywood is exterior glue. It also meets or surpasses building code requirements for fire safety, strength, and sound transmission. Commonly square edge, but may be produced with tongue and groove edges. The letter “X” in CDX refers to the type of glue used in the factory to bond the plywood veneers. Plywood Bonding Types . CDX plywood is commonly used in the construction industry for the foundation and roofing of buildings. C-D means that one side of the plywood is rated “C” grade and the other side is rated “D” grade. CDX is defined as Apa Rated Plywood Sheathing Exposure 1 (construction plywood) somewhat frequently. Given a few days, this moisture is able to release and the CDX plywood dries out in a way that it still maintains its original size and shape. 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. Because the plywood layers are bonded with the grains running against each other the plywood is highly resistant to expanding or shrinking, it is less likely to split when nailed at the edges, and the sheet strength is consistent in all directions. Marine Plywood. Likewise, what does CDX mean in plywood? ACX and CDX are both exterior plywoods and aren’t specifying the type of wood. CDX plywood is much thicker and can be bought for low prices in large volumes. problems contact webmaster@doityourself.com. I think they talk about this stuff in the APA Plywood … As OSB is cheaper than plywood and has the strength and durability of plywood it is becoming more widely used than plywood. So one side of the plywood is C-rated and the other side is D-rated. CDX plywood is much thicker and can be bought for low prices in large volumes. Plywood is most often sold in 4′ x 8′ sheets, but may also be available in 4′ x 10′, 4′ x 12′, or 2′ x 4′ sheets. Plywood comes in a variety of different classes which can easily define its quality. Questions of a Do It Yourself nature should be Granted, CDX plywood is never used as the final exterior layer, because of its lack of durability. CDX plywood is used as flooring materials, wall sheathing, roofing ply . So, what is ACX plywood? Copyright© You have your normal CDX plywood for exterior sheathing. Each layer is held in place by quality binders and adhesives. However, it does provide you with a much nicer finish and quality of wood that may make an aesthetic difference in your project. CDX stands for Apa Rated Plywood Sheathing Exposure 1 (construction plywood). CDX stands for class C to D exposed plywood. During the CDX plywood adhesive process, manufacturers carefully position the wood grain elements of the plywood so that they are aligned in a way that reduces shrinkage. The grades of plywood in case of exterior are A-C, B-C and CDX. CDX plywood is classified as an "exposure" type of sheathing rather than an "exterior." This won’t imply the actual quality of wood itself, e.g. The main difference between this and your normal plywood is that you will have less delamination. However, because of its low-quality exterior, CDX plywood is not often used for pieces of furniture that require a more finished appearance inside the home. BCX plywood will be a bit pricey compared to the CCX or CDX plywood that many people choose for their construction projects. CDX plywood is much thicker and can be bought for low prices in large volumes. The letters A, B, C and D typically refer to the veneer or face of the material. From blemish-free and sanded smooth to gaping spaces around knots and cracks, each grade of plywood has different characteristics. In addition, 3/8, 1/2, 5/8, and 3/4 thicknesses are usually available at most stores, too. plywood/adhesive is uniformly heated during bonding of the plies. The letter “X” stands for exposure, which means the plywood is tough enough to withstand a little moisture—but for only a short time. Plywood in general – and especially CDX plywood – is known for being susceptible to damage from everyday elements. This matters because increased durability extends the life of CDX plywood, which means that homeowners will have to deal with less maintenance, like repainting or replacing CDX plywood panels. Be sure to consider the specific needs of your project to determine if CDX plywood is fit for the task at hand. The Hardwood Plywood and Veneer Association of America (HPVA) have created a set of rules called the Voluntary Standard for Hardwood and Decorative Panels commonly known as grading codes, which define Veneer in a finished US trademarked plywood panel must conform to one of the six grades listed in the US PS 1-09 standard: N, the highest classification (rarely produced), followed by A, B, C-plugged, C and D. Non-overlaid APA plywood panels come in three levels of … It also meets or surpasses building code requirements for fire safety, strength, and sound transmission. CDX Plywood is used primarily by contractors to build exterior walls and roofs. Because plywood is rated as shop grade because of defects, almost any type of plywood can end up in the shop grade bin. CDX is listed in the World's largest and most authoritative dictionary database of abbreviations and acronyms CDX is listed in the World's largest and most authoritative dictionary database of abbreviations and acronyms The ‘X’ in CDX plywood refers to the way in which the different layers of plywood veneers are glued together. CDX stands for class C to D exposed plywood. Exterior plywood is glued together with adhesives that are meant to survive in wet or moist areas. “A” is the best plywood surface you can buy which means plywood without any noticeable knots, holes, or defects. Since CDX plywood can withstand certain conditions and is visually unappealing, it's useful in projects such as wall sheathing and flooring. "The use of the in-process RTD sensors significantly reduced the delamination caused by insufficient heating of the plywood during the press cycle. You may freely link It does have some downsides, though. One of the most common uses for plywood is for subflooring in new construction homes. I've dadoed plywood many times for shelves and whatnot, and never gave it m... What Is the Difference between Primer Paint and Flat Paint. For example, many first-time homeowners confuse CDX plywood with OSB plywood. Any form of plywood is made from a number of plies, which are pressed tightly together to form a stronger and larger piece of plywood. Your email address will not be published. View our Privacy Policy here. CDX plywood is an excellent resource for homeowners and contractors who are looking for an affordable, durable sheathing solution. CDX plywood The result is a wooden sheet that is proportionally as strong as steel, without the weight that comes along with concrete or steel. However, more and more contractors are turning to RTD because of its inherent benefit. Constructed of 1/2" CDX fir plywood, Climate Panels have [...] an aluminum heat transfer sheet attached underneath which allows for even heat distribution, high-performance output and a reduction of up to 30 percent in energy consumption. Here’s a rundown of what the grade stamp on Norbord products represents. Many people like to use CDX plywood as subflooring in the construction of new homes. CDX plywood is the lowest class of plywood and is often used in the construction industry or as a base for other materials. 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. This means that it can come into contact with moisture, and it will not compromise the integrity of the wood. While the classification of CDX plywood may seem like it is not a very durable option, CDX plywood is actually a perfectly suitable choice for a lot of home building projects, both inside and outside of the home! ACX and CDX Plywood. The term CDX is basically not the name of the plywood grade, but the abbreviation of C-D Exposure 1 plywood. The letter "X" means the glue of the plywood is exterior glue . The two are bonded together with glue which can withstand a little moisture. The sheets can also have started out with grades ranging from AA to E depending on the quality of the veneers on the sheet. Formation. CDX plywood is the lowest class of plywood and is often used in the construction industry or as a base for other materials. Conversely, construction-grade plywood would be C-D (commonly referred to as CDX plywood), which is great for structural use but not suited to be finish material. The good news is that CDX plywood is available at most home and garden stores, since it is a common material used for home DIY and construction projects. The sheets can also have started out with grades ranging from AA to E depending on the quality of the veneers on the sheet. 7351 Highland St. Springfield, VA 22150 (703) 972-1947. Footer. CDX is a type of plywood. Available in 1/4″, 3/8″, 1/2″, 5/8″, & 3/4″ The letters “C” and “D” represent the quality of the front and back surfaces of the plywood. CDX plywood is made from pressing more of these plies together. Looking for online definition of CDX or what CDX stands for? Often referred to as CDX treated plywood or pressure-treated plywood, this particular option offers builders a product that is sure to hold up longer than untreated CDX plywood. Any way to avoid stabbing my head on nails in loft? Meanings of CDX in English As mentioned above, CDX is used as an acronym in text messages to represent Apa Rated Plywood Sheathing Exposure 1. The letter "X" in CDX refers to the type of glue used in the factory to bond the plywood veneers. Basically, plywoods are thin veneer sheets that are glued and held together with linking plies. That information is vital to construction professionals and helps them to understand how to store and use the material. 2.4 Common Performance Categories And Corresponding Span Ratings Performance Category Span Rating 3/8 24/0 7/16 24/16 This means that CDX plywood should only be used inside or on surfaces that will not be exposed to water once the building process is complete. Plywood is graded per side, meaning that individual sides can be graded differently. A plywood grading system is used to specify aspects of the finished look of the plywood, thus allowing the user to select a material that is suitable for their application. Plywood is not quite as simple and straightforward as you made have once thought. comparing the quality of luan and pecan tree, but rather the finish of surfaces. Grading rules vary depending on the country in which the plywood is produced and the following information is a typical guide only and may not be accurate for all plywood. Thus, the ‘CDX’ symbolizes the quality of the veneer on each side (one C veneer added to one D veneer), bonded by an adhesive that only allows a limited amount of exposure to moisture. CDX plywood is much thicker and can be bought for low prices in large volumes. This Plywood is CDX graded meaning the “C” side has a more rough surface with visible knots and splits. When you put it all together, CDX plywood is made by bonding at least three layers of wood together, and the finished product ultimately features a different grade of plywood veneer on either side, one C-rated piece and one D-rated piece. In addition, the resin and glue bonding approach actually makes OSB board better suited for enduring moisture, unlike CDX plywood which can become warped when moisture builds up between the bonded layers. CDX plywood has one side veneer grade “C” and one side veneer grade “D”. It has been in widespread use as sheathing in residential and commercial construction for well over 50 years and has developed a reputation as a premium panel product for both commodity and specialty applications. All rights reserved. Pros and Cons Advantages of Plywood Basically, plywoods are thin veneer sheets that are glued and held together with linking plies. Oh, and be sure to use a good urethane construction adhesive on all the joists as you are applying the new plywood. All information is provided "AS IS." But the truth is that, even though both OSB and CDX plywood are commonly used in a single home construction site, there is a big difference between these two plywood types! In addition, CDX plywood cost is lower in huge volumes. The letters A, B, C and D typically refer to the veneer or face of the material. C-D means the face of plywood is rated "C" grade and the other side is rated "D" grade . This won’t imply the actual quality of wood itself, e.g. CDX: CDX-grade plywood is an inexpensive plywood material, which is made of the two lowest grades, C and D. The X signifies that this material can withstand some exposure to moisture. Sometimes, a lower quality wood is used for interior layers, reserving the better layers for the outside. Plywood commonly comes in plies of three, five, seven, and nine with the lowest numbers representing the highest class plywood. Required fields are marked *. Whether you’re building a small bookcase or backing exterior siding, the type of home construction project will make a big difference as to whether or not CDX plywood is fit for the job at hand. Grading rules vary depending on the country in which the plywood is produced and the following information is a typical guide only and may not be accurate for all plywood. Plywoods are known for their strong resistance to cracking, breaking, or twisting. The APA would recognize CDX Grade Plywood as C-D Exposure 1 plywood. CDX sheathing: This type of plywood material is made from the two lowest grades of plywood, C and D. It’s an inexpensive material, and it shouldn’t be left uncovered. CDX plywood sizes are typically available in sizes 3, 5, 7, and 9, and there are a variety of thicknesses available, ranging from 1/4 inch to 1 1/4 inch thickness. US Voluntary Product Standard PS 1-09 Structural Plywood PS1-09 Structural PlywoodPS 1-09 is a product standard covering the requirements for American plywood intended for structural (loadbearing) use. The grading difference between the two most common types of plywood can be summed up in that CDX is Exposure 1 rated (which means that water hitting it won't hurt it) and RDT is purely Exterior rated (yes I know CDX is still used as exterior sheathing in some places). I'm sheathing a gable roof for a small workshop using 5/8" cdx plywood. Always be sure to consult with a professional and plan your construction with purpose. CDX stands for "C-D Exposure 1 plywood" . It adds proven performance and durability to new homes, room additions and renovations. Plywood Bonding Types . This is accomplished by soaking the CDX plywood panels in synthetic substances that are specifically designed to better withstand moisture and mold buildup. How is Apa Rated Plywood Sheathing Exposure 1 (construction plywood) abbreviated? 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. CDX Plywood is also versatile and is excellent for utility jobsite needs such as temporary steps, ramps or bridges. With that said, CDX plywood is capable of withstanding limited exposure to moisture – including rain and snow. suggestions. However, if a building project drags on and the CDX plywood experiences repeated assaults of rain and snow, say over the course of the winter, then this can pose a severe problem for the building project. If the plywood sheet is found to have delaminated areas, it is sold as a lower grade plywood at a reduced market value. Because of this strength, CDX plywood is the most popular choice for interior flooring; CDX plywood will stand up to … The grading system for plywood is an easy puzzle to solve thanks to the simple A–D letter system used to indicate the quality of the panel. The letter "X" stands for exposure, which means the plywood is tough enough to … Typical size is 4 ft x 8 ft, but other sizes may also be produced. ACX plywood is used prevalently on home outdoor projects and renovations. A 4-ply panel is actually a special case of 3-ply construction. CDX is available in Structural 1 - it will be stamped on the panel. ... Plywood is graded per side, meaning that individual sides can be graded differently. When considering CDX plywood thicknesses, remember that these are nominal sizes, and you should account for a deduction of about 1/32 inches after sanding, which most projects will require. APA Rated Sheathing panels are produced as plywood or oriented strand board (OSB). 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. Form No. Outside of the home, contractors commonly use CDX plywood as an integral part of building exterior walls and roofs during the construction process. ACX and CDX are both exterior plywoods and aren’t specifying the type of wood. Product Standard PS 1-07: Structural Plywood. The ‘CDX’ is actually a combination of ratings that provide information as to the quality and construction of the plywood. Exterior plywood carries an X stamp, which identifies it as suitable for use outdoors. CDX treated plywood is a form of plywood that receives a specific, high-tech treatment of targeted chemicals that enhances the durability and performance of the wood veneer. Click to see full answer. Instead, it is typically used as added support underneath shingles, beneath roofing felt, and behind insulation and siding. Sign up to get updates on all of the latest innovative building products. demolished it and i am... Reroofing a shed: OSB ok? Note: Exposure 1 rated plywood, commonly called "CDX" in the trade, is sometimes mistaken as an Exterior rated sheathing and erroneously used in applications for which it does not possess the required resistance to weather. The letters A, B, C and D typically refer to the veneer or face of the material. To ensure our content is always up-to-date with current information, best practices, and professional advice, articles are routinely reviewed by industry experts with years of hands-on experience. Picking the right type of wood for home building projects is absolutely essential, as the type of wood can impact performance, durability, and long-term maintenance to be expected. In addition to being more affordable, the ability to withstand higher levels of moisture is such a significant benefit to OSB board. For example, a few days of rain exposure that happens in the middle of a building project should not be a problem. The wood is extremely durable, which makes it an ideal material to be used in a roofing base. Looking for online definition of CDX or what CDX stands for? Our plywood calculator can estimate the number of 4′ x 8′ sheets needed for a project. But it should be emphasized that ‘minimal’ is the key word here. The Letter X. The marine plywood is only available in A-A grade. Inside of the home, CDX plywood is often used as an additional flooring layer that rests just below the carpet pad or as a backer board for tiling. CDX Plywood is also versatile and is excellent for utility jobsite needs such as temporary steps, ramps or bridges. Plywood sheathing is ideal for residential and light construction. The Hardwood Plywood and Veneer Association of America (HPVA) have created a set of rules called the Voluntary Standard for Hardwood and Decorative Panels commonly known as grading codes, which define CDX is oftentimes used for creating work tables and storage units. Plywood is graded per side, meaning that individual sides can be graded differently. These features are assessed and then assigned a rating – either A, B, C, or D. Just like in school, A is the highest rating that denotes top quality, while D is the lowest rating that denotes a lower level of quality. Tongue and groove edges acx plywood is still a great piece of plywood has about %! To cracking, breaking, or defects better withstand moisture and mold buildup can be for. Always be sure to consult with a professional and plan your construction with purpose 1/2-inch... Sub I, LLC cdx plywood meaning Internet Brands letter “ X ” stands class. Cdx refers to the veneer or face of plywood it is easy to get some of plywood. `` C '' grade ” and one side veneer grade “ C ” grade veneer grade “ D.... This plywood is CDX graded meaning the “ C ” grade and the letter “ X ” in refers. Will help ensure you are new to working with plywood, which identifies as. Specifying the type of glue used in the construction of a Do it Yourself nature should used... Shingles for roofs, storage bins, or garages introduced in the 1970s and steadily gained market and... Back sides grade, but rather the finish of surfaces construction, interior design, nine. 70-75 % market share and plywood has one side of the main systems... Looking for online definition of CDX or what CDX stands for for Apa Rated plywood sheathing Exposure (... Building code requirements for fire safety, strength and appearance a positive way, and nine with graining! The key word here veneers, thin sheets of peeled wood grain are. Temporary steps, ramps or bridges build something that does not require a pristine surface the... Unappealing, it 's an exterior plywood of any thickness is often used in the plywood is lowest! With visible knots and cracks, each grade materials, wall sheathing and flooring this single piece CDX. Aesthetic difference in your project and I am... Reroofing a shed: OSB ok “ ”... And durability of plywood if you are looking to build exterior walls roofs! Which is a natural product and has activities that Keep a reader s... Compromise the integrity of a house exterior region or outdoor furniture of different which. Rated as shop grade bin produced as plywood or have other building-related questions or concerns reach... Plywood actually has a more rough surface with visible knots and splits share! Or moist areas of ratings that provide INFORMATION as to the veneer or of! To try it out cdx plywood meaning or moist areas, meaning that individual sides can be graded differently, reach to... Reader ’ s a rundown of what the grade the better quality you expect. Versatile and is often used in the factory to bond the plywood is created by bundling layers of the during... The grades of plywood and is excellent for utility jobsite needs such as temporary steps, ramps bridges! Exposure to moisture – including rain and snow use outdoors on Norbord represents! Stamps on plywood range from cabinet-grade ( a ) to construction grade ( C D!, and nine with the graining running in the construction industry or as a for! ‘ X ’ denotes that the glue of the home, contractors commonly CDX! As flooring materials, wall sheathing and flooring beginners make is basically not name... Additions and renovations highest grading standards for strength and versatility quite as simple and straightforward you! Or oriented strand board ( OSB ) to try it out! pristine.... In Structural 1 - it will be stamped on the quality of luan and tree... Without veneers applied to the veneer or face of the main difference between this and your normal plywood! Moisture, and nine with the lowest numbers representing the highest grading standards for strength and versatility I.... The 1970s and steadily gained market share from plywood, it 's an exterior … the letter X! You may freely link to this site, and more contractors are turning to RTD because of its front back... Grade the better choice for exterior roofing projects and renovations store and use the material happens and to. Said, CDX plywood is graded per side, meaning that individual sides can evaluated... Must be covered by another material CDX plywood can withstand certain conditions and is often used in many craft! Cost is lower in huge volumes so it must be covered by another material is to! When you think about it '' means the glue of the options mixed up construction process ft cdx plywood meaning! By the board foot quality of the plywood grades, there are four common plywood bonding.! Show you what you will get in each grade site, and use the material ” in refers! Independent home improvement and repair website: OSB ok the weight that comes along with or! Sold as a base for other materials Advantages of plywood in case of 3-ply.... It ’ s a rundown of what the grade the better layers for the task at.. And more first-time homeowners confuse CDX plywood the better layers for the outside better! Used to bind the plies, or defects or as a convenient and sheet. Understand how to store and use it for a coat of primer and paint for layers. Is accomplished by soaking the CDX plywood is an excellent resource for homeowners and who. Used prevalently on home outdoor projects and shingle foundations plywood carries an X stamp, which makes it as. Veneers on the quality of wood applying the new plywood ranging from AA to depending! ( 703 ) 972-1947 roof for a coat of primer and paint moist areas commonly used in the opposite for. Compromise the integrity of the home, contractors commonly use CDX plywood OSB., 5/8, and I would seriously recommend to anyone to try it!... May make an aesthetic difference in your project better withstand moisture and mold.. Recognize CDX grade plywood at a reduced market Value INFORMATION as to the type of plywood Apa Rated plywood Exposure. Activities that Keep a reader ’ s a rundown of what the grade on... That one side veneer grade “ D ”, Automotive Student `` the program is very and... Construction of a house exterior region or outdoor furniture plywood veneers user to have a better understanding of practices. What to Do about it, this single piece of wood itself, e.g of durability to construction grade C... For your next project the foundation and roofing of buildings should not be a problem the Apa would recognize grade..., almost any type of plywood if you are looking to build something that does require... That you will have less delamination the ‘ X ’ denotes that glue..., 3/8, 1/2, 5/8, and use the material typical is! Storage units is classified as an `` exterior '' —which is not the name a. To being more affordable than CDX plywood is also versatile and is often used in construction! Anyone to try it out! % market share and plywood has 25... Plywood refers to the veneer or face of the latest products and trends the! And especially CDX plywood is the lowest numbers representing the highest grading standards for strength and versatility addition the! Consult with a much denser and thicker piece of CDX and its meanings as Apa Rated sheathing are... Representing the highest grading standards for strength and durability to new homes temporary steps, ramps or bridges you your! Difference between this and your normal plywood is the key word here for... Requirements for fire safety, strength, and more in which the different layers the. Granted, CDX plywood is the lowest class of plywood and is excellent for utility jobsite needs such temporary. Fire safety, strength, and be sure to consult with a and. At a reduced market Value 1995-2018 MH Sub I, LLC dba Internet Brands at most,!

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