OSB board is an alternative product to traditional plywood. OSB stands for Oriented Strand Board, and is composed of pieces of wood oriented in the same direction. The compression of wood pieces that were cut along the direction of the wood fiber give OSB its formidable strength. OSB is typically used for structural applications, including roofing, wall sheathing , and sub-flooring.
OSB is chosen over plywood frequently due to its affordability over a comparable panel size. Though not popular, OSB can be used for exposed walls, siding, and becoming popular as an alternative for main flooring. In general, OSB is used where affordable strength is needed and will be covered up later.
When installing OSB, woodworkers may find that one side of the board has a rather rough side. But what does this all mean? I came across a house where half the sheathing was installed wrong "side down".
House is under one year warranty. I have tried to contact manufacturer but to no avail. The specs indicate must be installed with text side down. Hope this helps. I would suggest you call APA at They can typically answer your question on the first call. Their web site is www. But I find calling is faster. That side should be facing down, against the joists. When used as wall sheathing, that side should be against the studs. Acceptable Types of Wood You can apply drywall mud to any rough-grain wood surface.
Plywood or oriented strand board OSB are good choices, but the mud will also stick to painted wood, as long as the paint is flat and not glossy. Drywall mud is not intended for outdoor use, so don't skim-coat a garden shed. How do you seal OSB? Soak the tip of your paintbrush in your sealer and begin brushing it over the surface and on the ends of the OSB pieces.
Make sure you repeat this process on each side, not just where your cuts were made. Coat the pieces as they lay on the tarp, and then let the waterproofing sit to dry for 12 to 14 hours. How do you seal OSB edges? Use a measuring tape to mark off the needed length and width of OSB. Cut the wood using a circular saw. Mix a can of exterior waterproof paint using a stir stick. Use a small paintbrush to coat all newly cut edges.
Allow the paint two hours to dry. Give the wood an additional two hours of drying time. How long can a great white shark live? What is internal and external criticism of historical sources? Co-authors 9. Each subsequent piece of plywood will depend on the first piece being installed correctly.
If you do this properly, you'll have a beautiful plywood subfloor. Which way is plywood stronger? As a point of fact, this plywood may actually be stronger across its face grain direction than with its face grain direction.
And the reason has to do with the thickness of the face plies. What do the lines on OSB mean? OSB has its advantages. Some panels have a textured surface, which makes them less slippery when used for roof sheathing. OSB panels often have lines at and in. What are the lines on plywood for? It's more likely that your neighbor is using chip board, which commonly does have those markings for showing nailing lines.
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