OSB claims about 70 percent more of the North American wood sheathing market than plywood. The main difference between the two is how they handle moisture, and oddly enough there are wildly varying conclusions - from very reputable sources - as to just how vapour permeable they are. OSB vs Plywood Cost . Overall, we found plywood outperformed OSB … Plywood sheathing can either be OSB or all plywood. An increasing number of homes and light commercial buildings have oriented strand board (OSB) subfloors. OSB vs Plywood: Fast Fact. We have OSB looking at me when I tore up the carpet and padding. 3/4" OSB is fine on 2-foot centers -- 7/16" would be a little springy. Commodity OSB uses glues and a process that permits the panel to soak up moisture. OSB tends to hold more moisture, compared to plywood. Edge™ sub-floor commodity grade panels do not have a no-sand guarantee but have a 25 year limited warranty. It is 23/32 thick is says PS 2 too. I believe you said you'd have 16" centers, so probably 7/16" will do fine. When exposed to moisture, OSB swells more than plywood. The plywood tested has significantly more fastener holding power than OSB. Each OSB sheet comprises compressed wood strands … Oriented strand board, or OSB, is a wood structural panel that can also be used for flooring. If the choices are plywood or OSB for your shed floor, the plywood wins every time. Nowadays this flooring also comes with a 50-year warranty for every new buyer. Plywood is made with an odd number of layers for optimal strength and performance. That's why people prefer Advantech over plywood and OSB flooring. Re: OSB vs plywood flooring. Oriented strand board (OSB) and plywood are wood structural panels made by compressing and gluing pieces of wood together. Think about how often panels get dragged on their edges across a truck bed or across the floor deck in the process of installing them. While OSB and plywood appear similar and are generally interchangeable, the different ways that each material is manufactured contribute to … OSB or oriented strand board is an engineered wood that was created as a more affordable alternative to plywood. Whether you are building, remodeling, or just doing some repairs, many times you need a type of sheathing or underlayment for the project. The OSB is the Only floor under the carpet. Because OSD does not use costly veneers it is as much as half the price of regular plywood. Some sources claim OSB can expand up to 15% when exposed to moisture. You will get the information about which one is cheaper and which one is more expensive. Plywood and OSB manufacturers try to improve this by sealing the panel edges, but the sealant, whether it is a wax or a paint, tends to get scuffed off. Otherwise, the boards will come apart at the seams. You wedge it together till the gap totally closes. With a proper moisture barrier, this can be the best floor you could build! OSB is now used for about 70 percent of all floor, wall and roof sheathing in … Never weighted it, but my take is that OSB is 2-3 times heaver than the equivalent size and thickness of plywood. OSD (or OSB) Plywood: OSD plywood (which is also commonly known as OSB or oriented strand board) is produced by binding wood chips together with a mix of glue and resin. In 2001, oriented strand board surpassed plywood in terms of square footage produced. Every comparison should start from the cost. Plywood vs. OSB. While both have their benefits and drawbacks, it’s important to ask which one is better for construction—especially with regard to subfloors, walls, and roofs. I'm planning to install 2x6 rafters on top of the existing 2x8's (24" apart) and then planning to install 1/2" plywood or OSB. Plywood panels are created when sheets of veneer are peeled from a log and cross-laminated together with a hot press. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. It was a more cost effective product that had the required structural properties and … So do I need to take up the OSB and put plywood down or SHOULD I add plywood onto the OSB, or can I put hardwood over what I have. Post by David Oxhandler » Tue Jan 04, 2011 4:30 pm OSB has proven to be an excellent building component but is unfortunately often confused with particle board, which failed miserably as a flooring due to disintegration from moisture contact. This plywood vs OSB for roofing comparison will give you the information, too, about the overall cost between plywood and OSB. The effects of water on OSB are much worse than plywood, although in both cases water and moisture should be avoided. Will … OSB has a greater shear strength than plywood panels; OSB is less expensive than plywood and, when its utilized for sub-flooring, wall and roof sheathing, the savings to builders are significant; Plywood panels. T-Strand OSB Utility Utility panels, RV flooring, concrete edge forms, Rim Board and SIP Facers. The mixture is then cast and baked to produce a plywood-like sheet. For instance, with 24-inch truss/joist spacings, the National Wood Flooring Association recommends nominal 1 inch OSB underlayment compared to 7/8 inch CDX plywood. Here is the full information about that for you to read. I'm wondering if it would be better to go with plywood or OSB. The OSB swelled much more at the joints than it did in the center. For all the reasons outlined above, it is logical to conclude that plywood is most likely to be the best sub floor material for engineered wood flooring. We will discuss these types of plywood sheathing, sub-floors and plywood underlayment in this blog post. It's all about managing moisture It is always best to follow the hardwood flooring manufacturers recommendations for appropriate acclimation. Above, subfloor panels were allowed to stand in a pan of dye-colored water. Both can be used in structural applications for roofs, walls and floors. As you can see, OSB or plywood underlayments are the best options for almost all circumstances. Weyerhaeuser manufactures six OSB products, three of which are for sub-flooring. The greatest swelling on an OSB panel is around the edges, where cuts expose the layers. Builders choose OSB because it typically costs less than plywood, is free of knots and voids, and can … Plywood and OSB come in 4 x 8-foot sheets that are typically 3/4 inch thick. Simply put, many contractors find OSB to be a more consistent product than plywood or other types of material for subfloor: every sheet is the same. (There is a fair amount of weight variation between different brands/grades of OSB.) The way we lay flooring is to use subfloor adhesive and lay a bead down the whole length of the groove. It almosts seems like 3/4" is the only option given how unsafe the 1/2" version sounds in both OSB and plywood. In addition, Exotic hardwood flooring or "Iron woods" do best over a stronger, stiffer, sturdier plywood base for a secure nail hold. Plywood is recommended and approved as an underlayment by almost all flooring manufacturers , including resilient flooring like vinyl ( … Applications for Plywood vs. OSB. Reinforced Concrete Slab. When I look at my floor from the basement it is deffinetly OSB. OSB vs Plywood Debate When OSB hit the market, some builders embraced it. Although the Advantech OSB had similiar nail holding power to the 5/8” plywood. Most subfloor-grade plywood uses similar glues between the laminators. To be fair, there is “waterproofed” OSB on the market, but you’ll still need to treat the cut edges. A few builders say that they prefer OSB over plywood for flooring because the surface (when new) is always clean, flat, and knot-free. Help Let’s take a look at which one might be the better choice for you and your projects. Both oriented strand board (OSB) and plywood are considered the same by building codes. As the name suggests, the wood comprises strands that are arranged in a specific orientation. Also wondering if it is necessary to let any boards purchased sit up there for a few days to … One of the nice things about plywood is the variety of options you can buy. The sheets are installed over the joists with construction adhesive and screws or nails. While plywood gives you a more consistent panel, it is still prone to wicking moisture. Numerous choices are available for this purpose, but the two most commonly used products are oriented strand board (OSB) and plywood 1.Both boards are made of wood with glues and resins, come in many sizes, and can be used for a variety of purposes.