BCX comes in a variety of thicknesses. Posted: Thu Aug 04, 2011 6:14 pm . Based on advice received here, I had decided to go with CDX plywood. Another type of construction sheathing that might work okay for rough shop projects, like work tables and... Sanded Pine . CDX Plywood is used primarily by contractors to build exterior walls and roofs. CDX PLYWOOD vs. OSD PLYWOOD OSD and CDX plywood are both commonly found on construction sites, because builders and contractors rely on both types of plywood to get the job done. Different species of woods have varying densities. You can typically find both OSD and CDX plywood on construction sites since contractors and builders depend on the two kinds of plywood to take care of business. CDX plywood … "The use of the in-process RTD sensors significantly reduced the delamination caused by insufficient heating of the plywood during the press cycle. Not all plywood is the nominal thickness after drying. In order to understand marine plywood well, it’s better to make a comparison between marine plywood and general exterior plywood. Plywood, on the other hand, is a type of manufactured wood panel. Our product mix includes sheathing, flooring, sanded, siding, plyform and insulating panels. For example, hardwood lumber weighs more than softwood lumber due to higher densities. Plywood is a powerful structural product Plywood is a powerful structural product used where strength and stiffness are required for subfloors, wall or roof sheathing and do-it-yourself projects. For example, many first-time homeowners confuse CDX plywood with OSB plywood. CDX stands for class C to D exposed plywood. Marine Plywood. In addition to thickness, the type of plywood is a major factor in how much it weighs. We stock our own Boise Cascade manufactured plywood and other leading brands. I may be a bit mistaken about the knot issue, but I think you have the idea. x 2 ft. x 4 ft. BC Project Panels are perfect for small projects and repair work. CDX stands for "C-D Exposure 1 plywood" . We used 5/8" CDX on one house and the same problems were apparent; the only advantage of the extra thickness was it felt stiffer underfoot. Usage. Should you use CDX (plywood) or OSB (oriented strand board) for roofing plywood? They are easy to transport, lightweight, and priced right - … The most typical marking for exterior plywood is "CDX." What is OSB. It can also be manufactured in lengths up to 16′, sometimes even longer whereas plywood can only done in 8-10′. Generally, the biggest decision you’ll make when it comes to choosing Plywood grades is whether you’ll use Structural or Non-Structural grade Plywood. Learn more about the actual thickness of plywood. In fact, both materials have its one of a kind properties and characteristics. 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. If you are new to working with plywood, it is easy to get some of the options mixed up. x 48 in. than CDX plywood. Thus, they use each in … Whether it is CDX or OSB, we deal with only the best quality producers of panels. The two are bonded together with glue which can withstand a little moisture. Here’s the ultimate plywood for building nice shop furniture. They are used in the construction of a house exterior region or outdoor furniture. Pines are considered to be a softwood, light weight and less expensive. x 4 ft. x 8 ft. Fir Sheathing Plywood (Actual: 0.688 in. ft. home, OSB is about $700 less expensive compared with plywood if used as the subfloor, sheathing, and roof decking. Trubord 7/16 is rated 24/16 and 15/32 and 1/2 are rated 32/16. It can also be used under hardwood, laminate, and carpet, but this is much less common these days because subflooring is typically smooth enough for these materials, many of which are installed with a different type of underlayment or pad. Due to its light weight, pine is quite popular for bedroom furniture, such as wardrobes, beds, as it is much easier to move this furniture around. The marine plywood is only available in A-A grade. Cost of Plywood vs OSB. x 47.75 in.) This plywood is made to function better outdoors - deals with temp changes and moisture better than other forms of plywood. It is made by gluing together plywood layers, also called veneers. Sanded Plywood (Common: 1/2 in. 1/2 in. Because of this strength, CDX plywood is the most popular choice for interior flooring; CDX plywood will stand up to … All these products meet or exceed all the requirements for meeting codes be it new construction or remodel. Available in fir and southern pine as well as other desired imported species. For a typical 2,400 sq. x 2 ft. x 4 ft. BC Project Panels 1/2 in. The APA would recognize CDX Grade Plywood as C-D Exposure 1 plywood. The letter "X" means the glue of the plywood is exterior glue . 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. Baltic Birch - . (d) Strength axis is defined as the axis parallel to the face and back orientation of the grain (veneer), which is generally the long panel direction, unless otherwise marked. If so, it therefore, means CDX has the most number of knots and defects, making it a lower grade plywood. OSB, on the other hand, stands for Oriented Strand Board which is a cheaper version of CDX. The letters C and D represent the grades of either side of the plywood, while X stands for exposure. The Spruce / Joyce Lue Plywood Bonding Types . Each of these materials has its own unique properties and qualities, and so each is used in specific applications. 23/32 in. x 2 ft. x 4 ft.; Actual: 0.451 in. The higher the grade, the higher the price, of course. Construction Plywood vs Project Plywood CDX - . On page 6 is OSB Sheathing info and a 24/16 L/180 has a uniform load of 68 at 24″o.c. x 23.75 in. The grades of plywood in case of exterior are A-C, B-C and CDX. I live in BC and we could see the effects of the Florida hurricanes in our materials pricing on the opposite corner of the continent. Job-site handling • OSB panels lie flat and are engineered for consistent The thickness of this plywood is normally measured in 32nds of an inch; with the standard sizes being 1/32” smaller than the nominal thickness. plywood cdx -vs- OSB. CDX plywood is considered Exposure 1 plywood. Marine Plywood. Both plywood and OSB are used for sheathing roofs, walls and subfloors. Exterior plywood is glued together with adhesives that are meant to survive in wet or moist areas. Newbie Contributor: Joined: Mon Jan 25, 2010 6:19 pm Posts: 21 We will be floating a 3/4" plywood subfloor over our slab. CDX is a type of veneer plywood that is fabricated by gluing then pressing sheets of wood together to strengthen them. Post subject: CDX vs. ACX Plywood for Subfloor over Concrete Slab. CDX Plywood Vs OSD. Lets learn the differences between CDX and OSB so you can make a more informed decision when it comes time to choose one or the other for your roofing project. On page 2 you will see the plywood sheathing info. Made entirely of Douglas Fir or Western Larch, marine-grade is one of the highest designations which can be given to a piece of plywood and is considered to be "premium." newbuilder | Posted in Construction Techniques on November 6, ... Lumber and sheet goods prices are super volatile, especially in middle of summer building season. Plywood underlayment is a thin plywood material that is most commonly used under resilient flooring materials, such as vinyl and linoleum sheets and tiles. For a decking, or substrate underneath shingles, you can usually use either material. CDX plywood has one side veneer grade “C” and one side veneer grade “D”. CDX plywood is much thicker and can be bought for low prices in large volumes. It is made of wood chips, resin and glue, cast and baked together to produce a CDX-like sheet. (c) 5-ply applies to plywood with 5 or more layers; for 5-ply/3-layer plywood, use values for 4-ply plywood. You will most usually see, "AC, BC, CD, etc. x 96 in.) CDX is a rough grade with exterior (X) grade glue. In addition to the plywood grades, there are four common plywood bonding types. the letter "A" is the best level of plywood veneer you can buy (that means plywood without any noticeable knots, holes, or repaired defects), then letters C and D certainly indicate a lower grade of quality when talking about plywood in general—and the price will reflect this. If the plywood sheet is found to have delaminated areas, it is sold as a lower grade plywood at a reduced market value. The “RTD” in RTD plywood stands for Resistance Temperature Detector. The noticeable difference between these two grades of Plywood is that Structural Plywood is legally classified and rated for structural purposes due to its use of either an A-Bond glue or a B-Bond glue. 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. It can encounter high moisture content but needs to be sealed for complete outdoor use. Plywood quality is ranked by letters of the alphabet, with "A" being the best ranking. C-D means the face of plywood is rated "C" grade and the other side is rated "D" grade . Moisture resistance • Plywood absorbs water faster and dries out faster than OSB. CDX Plywood vs OSB . 3/8 Cat Ps1-09 Square Structural Douglas Fir Sheathing, Application as 4 x 8. Item #12181 Model #185109 Both types of panels swell around the edges as they get wet, but plywood returns nearly to its original thickness as it dries, while OSB swelling is irreversible. About CDX Plywood. CDX plywood is durable and moisture proof. While OSB can pack 50 strand layers into a sheet, plywood only has 5-7, giving OSB a more consistent density, though it does about two pounds or so more per sheet then plywood. CDX plywood is used as flooring materials, wall sheathing, roofing ply . OSB is cheaper than plywood by about $3 to $5 per panel. There you will see that a 24/0 plywood panel has a uniform load at L/180 of 57 at 24″o.c. The following is the comparison between marine plywood and general exterior plywood : 1. So, 3/8” plywood is actually 11/32” ½” plywood is actually 15/32”, 5/8” plywood is actually 19/32” and ¾” plywood is actually 23/32”. Formation. plywood/adhesive is uniformly heated during bonding of the plies. 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