On page 2 you will see the plywood sheathing info. For a decking, or substrate underneath shingles, you can usually use either material. The glue The glue for marine plywood should … CDX is a rough grade with exterior (X) grade glue. Should you use CDX (plywood) or OSB (oriented strand board) for roofing plywood? 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. Available in fir and southern pine as well as other desired imported species. It can encounter high moisture content but needs to be sealed for complete outdoor use. Trubord 7/16 is rated 24/16 and 15/32 and 1/2 are rated 32/16. In addition to the plywood grades, there are four common plywood bonding types. CDX Plywood Vs OSD. BCX comes in a variety of thicknesses. CDX plywood is durable and moisture proof. Usage. Moisture resistance • Plywood absorbs water faster and dries out faster than OSB. plywood cdx -vs- OSB. CDX plywood is used as flooring materials, wall sheathing, roofing ply . 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. Not all plywood is the nominal thickness after drying. There you will see that a 24/0 plywood panel has a uniform load at L/180 of 57 at 24″o.c. CDX stands for "C-D Exposure 1 plywood" . 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 use of the in-process RTD sensors significantly reduced the delamination caused by insufficient heating of the plywood during the press cycle. 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”. Another type of construction sheathing that might work okay for rough shop projects, like work tables and... Sanded Pine . About CDX Plywood. Newbie Contributor: Joined: Mon Jan 25, 2010 6:19 pm Posts: 21 We will be floating a 3/4" plywood subfloor over our slab. Plywood quality is ranked by letters of the alphabet, with "A" being the best ranking. In order to understand marine plywood well, it’s better to make a comparison between marine plywood and general exterior plywood. They are used in the construction of a house exterior region or outdoor furniture. You will most usually see, "AC, BC, CD, etc. The letter "X" means the glue of the plywood is exterior glue . (c) 5-ply applies to plywood with 5 or more layers; for 5-ply/3-layer plywood, use values for 4-ply plywood. Plywood underlayment is a thin plywood material that is most commonly used under resilient flooring materials, such as vinyl and linoleum sheets and tiles. x 4 ft. x 8 ft. Fir Sheathing Plywood (Actual: 0.688 in. x 48 in. CDX plywood is much thicker and can be bought for low prices in large volumes. 23/32 in. Post subject: CDX vs. ACX Plywood for Subfloor over Concrete Slab. The grades of plywood in case of exterior are A-C, B-C and CDX. 1/2 in. 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 “RTD” in RTD plywood stands for Resistance Temperature Detector. 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. If you are new to working with plywood, it is easy to get some of the options mixed up. As far as OSB vs. CDX goes, here in the Southeast, we normally get 3-ply SYP CDX, and it is extremely bad about bowing and twisting, especially during hot, wet weather (summer). x 2 ft. x 4 ft.; Actual: 0.451 in. OSB, on the other hand, stands for Oriented Strand Board which is a cheaper version of CDX. Marine Plywood. CDX is a type of veneer plywood that is fabricated by gluing then pressing sheets of wood together to strengthen them. For example, many first-time homeowners confuse CDX plywood with OSB plywood. x 23.75 in. Pines are considered to be a softwood, light weight and less expensive. 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. ft. home, OSB is about $700 less expensive compared with plywood if used as the subfloor, sheathing, and roof decking. The marine plywood is only available in A-A grade. In addition to thickness, the type of plywood is a major factor in how much it weighs. It can also be manufactured in lengths up to 16′, sometimes even longer whereas plywood can only done in 8-10′. For example, hardwood lumber weighs more than softwood lumber due to higher densities. Major differences between OSB and CDX 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. If the plywood sheet is found to have delaminated areas, it is sold as a lower grade plywood at a reduced market value. Marine Plywood. 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. We stock our own Boise Cascade manufactured plywood and other leading brands. Whether it is CDX or OSB, we deal with only the best quality producers of panels. than CDX plywood. Job-site handling • OSB panels lie flat and are engineered for consistent plywood/adhesive is uniformly heated during bonding of the plies. Cost of Plywood vs OSB. Item #12181 Model #185109 It is made of wood chips, resin and glue, cast and baked together to produce a CDX-like sheet. OSB is cheaper than plywood by about $3 to $5 per panel. All these products meet or exceed all the requirements for meeting codes be it new construction or remodel. CDX stands for class C to D exposed plywood. Both plywood and OSB are used for sheathing roofs, walls and subfloors. 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. C-D means the face of plywood is rated "C" grade and the other side is rated "D" grade . 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. This plywood is made to function better outdoors - deals with temp changes and moisture better than other forms of plywood. Here’s the ultimate plywood for building nice shop furniture. I may be a bit mistaken about the knot issue, but I think you have the idea. CDX Plywood is used primarily by contractors to build exterior walls and roofs. Each of these materials has its own unique properties and qualities, and so each is used in specific applications. You have your normal CDX plywood for exterior sheathing. On page 6 is OSB Sheathing info and a 24/16 L/180 has a uniform load of 68 at 24″o.c. The two are bonded together with glue which can withstand a little moisture. 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. x 96 in.) The following is the comparison between marine plywood and general exterior plywood : 1. What is OSB. The letters C and D represent the grades of either side of the plywood, while X stands for exposure. Different species of woods have varying densities. 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. Construction Plywood vs Project Plywood CDX - . The most typical marking for exterior plywood is "CDX." x 2 ft. x 4 ft. BC Project Panels 1/2 in. x 47.75 in.) x 2 ft. x 4 ft. BC Project Panels are perfect for small projects and repair work. In fact, both materials have its one of a kind properties and characteristics. Based on advice received here, I had decided to go with CDX plywood. 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. Sanded Plywood (Common: 1/2 in. If so, it therefore, means CDX has the most number of knots and defects, making it a lower grade plywood. CDX plywood … 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. newbuilder | Posted in Construction Techniques on November 6, ... Lumber and sheet goods prices are super volatile, especially in middle of summer building season. Our product mix includes sheathing, flooring, sanded, siding, plyform and insulating panels. The APA would recognize CDX Grade Plywood as C-D Exposure 1 plywood. CDX plywood is considered Exposure 1 plywood. Exterior plywood is glued together with adhesives that are meant to survive in wet or moist areas. They are easy to transport, lightweight, and priced right - … Plywood, on the other hand, is a type of manufactured wood panel. CDX Plywood vs OSB . For a typical 2,400 sq. 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. 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." Posted: Thu Aug 04, 2011 6:14 pm . CDX plywood has one side veneer grade “C” and one side veneer grade “D”. It is made by gluing together plywood layers, also called veneers. Baltic Birch - . 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. (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. Formation. Thus, they use each in … The Spruce / Joyce Lue Plywood Bonding Types . 3/8 Cat Ps1-09 Square Structural Douglas Fir Sheathing, Application as 4 x 8. 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