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Quick Column Summary: OSB roof boards swelling Pull off or cover over OSB OSB can swell and still be good Question builder on delays Steve, who's having a house built in Ann Arbor, Michigan, has a questionable builder. I see big trouble brewing. "We are having a home built and OSB boards were used for […]

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Plywood and OSB (oriented strand board) has a grading system. The Engineered Wood Association has a labeling system to grade lumber for its recommended use. How to read the grading stamps and some sample OSB and plywood ratings are provided.

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Plywood is very strong. You can use it even make plywood hurricane shutters. There are different plywood grades and plywood types such as CDX plywood and marine plywood. If you are building a home in an area raked by hurricanes, plywood is a great material to use, better then OSB.

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Floors that bounce up and down when you walk across them are annoying. The floor may be structurally sound and built within code limits. In almost all cases, the floor can be fixed so that it is solid and does not bounce.

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Engineered I joists offer many advantages. The floor joists can be purchased in varying depths with different flanges on the top and bottom. The I joists install in the same way as a traditional wood floor joist and make for a stiffer, squeakless floor.

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Engineered I joists are similar to traditional floor joists, but have a few special care requirements. I joists should be stored upright and not come in contact with moisture and need to be blocked to prevent rollover. Here are some tips for installation and cutting holes in an I joist.

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There are all sorts of places to get literature for Plywood and Oriented Strand Board (OSB board), but the best place is the Engineered Wood Association. This group produces some of the best descriptive booklets, technical manuals and brochures in the world.

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Oriented strand board (OSB board) can be used for many things that plywood can do. However, it does have its limitations. In some cases, treated plywood is a cheaper and just as useful choice. Be sure to read the label on OSB board to make sure you're purchasing the right kind for your job.

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