If your roof is not flat and you cannot climb to the peak to get accurate width measurements then you can add a multiplier for the pitch of your roof. OSB is made by combining glue, resin, and wood chips and pressing them into the shape of a plywood sheet then baking everything together. It has been estimated that OSB has a stronghold of ¾ of the market share, mainly because it’s the more affordable option. Use 5/8 inch C/C PTS grade for your overhangs and 5/8 inch CDX for the rest. Plywood OSB vs Plywood comparison. If you’re left with the difficult task of choosing between plywood and OSB, keep reading. Cheapest way to board it out would probably be shiplap surely. One article said staples better than nails. "Just to keep the rain off" is different from … OSB is … OSB can get mushy easy, and someone will have to walk around up there in the future. osb isnt suitable for direct exposure to the elements, its good stuff for shed floors and roofs though. Because of this manufacturing process, OSB is at least half the cost of CDX plywood. A layer of plywood also offers an additional layer of soundproofing from rain landing on the roof, though the air pocket between the roof and the interior drywall plays a larger part in keeping noise down. If the roof dips here and there because of the thin plywood the 1/8 jump may no be so bad in the mix of it all – Jack Jul 26 '16 at 4:24 Here (in snow country) 1/2" OSB is standard, with 7/16" being common for walls. OSB is now used for about 70 percent of all floor, wall and roof sheathing in North America. The Minimum Plywood for Roofing. Shed roof thickness Discussion in 'Builders' Talk' started by Dazzchazz, Oct 27, 2017. One sheet = 32 ft² This basically calculates the number of Although, OSB typically offers a higher shear rating which adds rigidity to your structure. if your layout is greater than 16" on center for some reason. A roof truss, simply put, is a wooden frame that supports the roof of a built structure, like a shed. I'd call a truss My personal opinion is that OSB performs well on the wall and floor but stick to CDX Plywood on the roof. For a decking, or substrate underneath shingles, you can usually use either material. OSB and plywood are both commonly sold in 4-by-8-foot sheets, but OSB can be made in much larger panels, up to 8-by-24 feet. Plywood vs MDF vs Particle Board vs OSB – Pros & Cons To begin with, let us try to understand more about each of these four types of wood. Question is, what will you use the roof for? Just make sure it is exterior grade ply so it will not delaminate if it gets wet. Plywood shed flooring is usually 3/4 inch and OSB 5/8 inch thick. sam_underhill Full Member I’m replacing some knackered 10mm ish T&G that’s had a rought time under some felt with holes in. One of the nice things about plywood is the variety of options you can buy. Use our roof pitch calculator to find the pitch of your roof or find the pitch multiplier, then multiply the area of the footprint of your roof by the multiplier to find the actual area. Plywood vs. OSB Which is the better option, plywood vs. OSB? Far too often I see OSB “sag” between the trusses making your roof look wavy. Replacement shed roof – OSB or Ply? Roofs are framed with rafters or trusses, which are rafters joined by internal braces so they install as a single component. Structurally, OSB and plywood are very similar in strength and ability to hold nails or screws; OSB may have greater shear strength -- the ability to span distances -- than comparable thickness of plywood. There is no question that plywood is better then OSB. Cheapest way to board it out would probably be shiplap surely. OSB is more resistant to moisture since the glue Should you use CDX (plywood) or OSB (oriented strand board) for roofing plywood? Well, each has their own strengths and weaknesses when used as exposed decking or subflooring. There are many ways to design and connect trusses, and shed builders often have their own techniques and styles. Estimate the amount of plywood or OSB needed for sheathing a roof. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features The calculation is based on that the Plywood or OSB (Oriented Strand Board) sheets are of a 4' x 8' size. But my research was too brief. Both can be used in structural applications for roofs, walls and floors. Dazzchazz New Member Just about to build an extension to my shed. Usually anything under 10’x12’ or so can be OSB vs Plywood: Fast Fact In 2001, oriented strand board surpassed plywood in terms of square footage produced. ..Especially Whatever you do do not be taken into by this – always ask whether the shed floor and shed roof is made from chipboard, OSB board (which is sometimes known as wafer board or sterling board) or made from proper T&G timber Once we have the details of each one, we can study how they differ from each other. While plywood remains a good and viable option, the fact remains that OSB is now the preferred choice. Posted by dignato on 16.00 / with No Comments Under or, osb, plywood, roof, Shed Shed roof osb or plywood Exterior plywood - osb lumber | carter lumber, Carter lumber features a wide selection of plywood and osb products, so no matter what … 30 years on it's working out fine. Exactly one roll of thick tar paper. In this OSB vs. Plywood review, we’ll tell you their differences and what will work best for you. 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