Deane Biermeier is a contractor with 27 years experience in home repair, maintenance, and remodeling. When it comes to selecting the support for your finished floors, typical plywood and traditional commodity oriented strand board (OSB) subflooring satisfy minimum standards in current building codes. Subfloor sheets for both OSB and plywood come in 4 x 8 or 4 x 12 sheets. 2x10 FJ there now. These numbers indicate the diameter or thickness of the screws. Local store prices may vary from those displayed. x 47.75 in. Below is a guide to the building materials weights for typical supplies used during the construction of your walls, ceilings and floors. Specialty Panel. A well-installed subfloor should last as long as the house itself. The National Wood Flooring Association advises that OSB sub-flooring panels be glued and fastened. However, the difference is not very significant, and the cost-saving offered by OSB makes it a perfectly acceptable subfloor material in most situations. (171) Model# 15114 $ 9 27. This high-performance sub-floor is designed to help you avoid costly and time-consuming joint sanding. OSB has untreated edges that are somewhat more susceptible to swelling if they get wet. OSB (oriented strand board) is made from large, flat chips arranged in as many as 50 layers, which are adhered together with glues and pressed into sheets. x 47.75 in. x 8 ft. OSB TechShield Radiant Barrier, Advantech 23/32 in. A well-installed subfloor should last as long as the house itself, but OSB is slightly more flexible than plywood, so it is not the best choice under heavy flooring like ceramic or stone tile. Plywood is available in the same sizes as OSB. C. Both CD EXPOSURE 1 plywood and OSB Exposure 1 subfloor panels are appropriate subflooring materials, but the proper thickness of the material will be determined by the In the 1950s, this material quickly replaced solid wood planking as a subfloor material in homes. However, check with your local code authorities for the official recommendations. Plus, DryGuard comes with a 200-day no-sand warranty. Oriented Strand Board (Common: 7/16 in. Some local codes may require 1-inch thick sheets for joists up to 24 inches apart; for these, you may need to buy from a construction lumber yard since general home-improvement centers may not stock them. Limit 90 per order. Can You Add Padding Under a Hardwood Floor? Use OSB panels rated for the distance between the floor joists. The sheets are anchored to the joists with nails or screws driven 6 inches apart, and they are secured to joists across the "field" of each sheet with screws or nails driven every 8 inches. B. Solid-board subflooring should be ¾” x 51/ 2” (1” x 6” nominal), Group 1 dense softwoods, No. Standard plywood can be used for subfloors, but it is more common to use tongue-and-groove sheets that interlock along the edges. OSB comes in the same sizes as plywood subfloor sheets. Under some circumstances, OSB may flex underfoot when installed under carpet or vinyl flooring; this usually occurs if joist spacing is a wide 24 inches rather than the standard 16 inches. x 2 ft. x 4 ft.; Actual: 0.435 in. Because plywood is the stronger material, very observant home buyers may place a small premium on plywood subfloors. x 4 ft. x 9 ft. Square Edge Oriented Stand Board, Subfloor Membrane Panel 3/4 in. OSB costs significantly less than plywood subfloor sheets. I'm finishing off a bonus room. The sheets are generally 4 x 8 or 4 x 12 feet in size. Thicknesses for products used for subfloors are generally 23/32 inch (just under 3/4 inch), but thicker sheets are available where building codes call for them. x 23.75 in. 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. These flat chips are clearly visible when the sheet is viewed from above, and it is clear that OSB is not a sheet of solid wood. Sub-floor adhesives prevent uneven and squeaky floors. Because it makes use of leftover wood material, OSB tends to be cheaper than plywood, and it is more uniform, since it has none of the knots and other defects that may be present in plywood. Since the subfloor is entirely hidden, neither material is visible, except from the unfinished space beneath the floor.