PDF INSTALLATION Light Commercial Resilient Sheet Flooring Commercial & Residential Floor Repair - Too Smooth Floor fastened and reinforced according to manufacturer's instructions. Oriented strand board is primarily intended to be a functional board, not a finished board. Screw down sub-floor using 1 5/8" screws (screws spaced approx. The information you're looking for is the panel grade, span rating (16,20,24,32,40, or 48), and exposure rating. Also, use marine grade varnish for top coats. Note: a lot of this stuff isn't wood approved and could make a hellacious mess around the walls OSB, or oriented strand board, is an engineered wood product often used as sheathing in walls, floors, and roofs.It is cheaper than plywood and, with no internal gaps, more rigid. Protect the seam and allow it to dry (approximately 6 hours). After pulling up the rugs in my bedroom where i'm planing my first room of laying the laminate flooring, i found the OSB seams are raised. Insert the tube right into a caulking gun and pull the set off till you see caulk come out of the nozzle. The moisture may also collect on the . Follow this answer to receive notifications. The result is a finer sand which will give your floorboards an excellent, polished finish which will prepare them for a new layer of varnish. Staples should be placed every two inches around the edge of the sheet and every four inches in the interior. Top . With OSB, it is the seams that peak up if it is allowed to be rained on, before the building gets dried in. OSB/Plywood, a slumlords best friend. Tough, sharp aluminum oxide particles make our sanding belts great for both wood and metal. • Completely sand OSB subfloor with a floor sander until smooth and flat. It's like the turkey loaf of building materials. Plywood Better Watch Out—Particle Board's Cousin Is Looking Damn Good. Sure enough, the seams of the OSB panels aligned with the flooring gaps. Wait 24 hours. On to the question about using a single layer of 3/4" mdf with invisible seams.When you cut the joints clean and butt them there is not room really for any filler and unless the substrate is perfectly flat and level you will see a joint after painting sooner or later.I would use some biscuits on the joints for alignment when gluing them . A worry with this type of sander is that they can leave swirls on the boards afterwards. The stamp painted on the underside or back of the board indicates use. caulking, silicone, anything else will be ugly, dirty, and eventually fall out. Also close off from rest of house as well. In the outer layers strands are generally oriented longitudinally in line with the panel length, whereas in the middle . 2 Wear eye protection and a dust mask when sanding OSB to. Even special varnish for OSB boards is available. 6. I have no experience with Epoxy Coatings on OSB, so I won't comment on that. That's where it gets its name, since the strands are "oriented" as a whole [Source: OSB Guide]. Is it at the seams/joints, or in the middle of OSB sheets? Drying times vary, and can also take up to eight hours. As in two headed babies toxic. On this new thick vinyl planking, supposedly you can patch/sand and install over the exist T&G. Personally, I would always install "underlayment" (not 1/4" plywood), as rough-in framing ain't pretty. Cross-hatched strands impregnated with resins help create stability in OSB. These strands are arranged flat and then oriented perpendicular to each other. Yes, sand down those butts and joints and any high spots. If stapling/nailing, you can layer up asphalt felt in 15 or 30 lb. Prized Contributor: Joined: Tue Aug 17, 2004 1:26 am Posts: 1195 Location: Virginia Edger. Though most commonly used to patch seams between sheets of drywall, mud can be used on plywood to create a smooth, professional finish. It's important to apply it as thinly as possible. Sand down the plywood, particularly around the edges where the pieces meet at the seams. Critics sometimes say that staggered seams make a house stronger, but it's hard for us to believe that a couple dozen screws on both sides of a drywall backer make a weaker connection than . Without sanding properly, OSB has high and low spots throughout the floor that could telegraph through the vinyl. As referenced in OSB-4004and APA Subfloor Preparation Guide (V440), builders may find it advantageous to remove this slight ridging by sanding along the panel edges. Sand the covered joint with 220 grit sandpaper. Specifications. Identifying the exact location of joist centers can be difficult. I really think they should just leave those silly lines off the wood to begin with but what is one to do! Is it uneven at the periphery of the shed floor, or in middle places? Sanding seams is necessary on most jobs due to the tendency of OSB to swell at the edges (coincidentally known as edge-swell) when exposed to rain, snow, or construction-related moisture introduced during the construction process (which also reiterates the need to check the moisture of the subfloor before installation). Wipe down the seam with tack cloth to remove the dust created by the sanding. . OSB cannot be sanded to take on a particular shape, but a light pass with sandpaper will smooth out the surface so splinters don't scratch the bottom of the material you install over the OSB. The day I put the flooring down, it rained, and never dried out enough to put any sealer on the floor (which was my intention in the first place). Filling OSB cracks. Sometimes I am doing a plywood subfloor leveling with a wood edger. Immediately clean seam with a damp cloth followed by a clean, dry cloth. Squirt a 3/8-inch bead of caulk alongside the seams of the plywood. If that's the look you want, certainly a thickness sander will get you there faster. Step 1: Locate the centers of the joists on either side of the offending joist and mark these on the floor using chalk line. 5) Sanding seams and high spots flat. In my previous videos you can find some tips on how to level a plywood subfloor with grin. floorguy. Fill the seam joint with wood putty. Oriented strand board is primarily intended to be a functional board, not a finished board. The plywood seams should meet over subfloor joints to ensure proper support. Zrbe318, Skil 7500 & amp ; Decker BR318, Makita 9910, Ryobi ZRBE318 Skil! Drywall over OSB sanding OSB to < a href= '' https: //advrider.com/f/threads/osb-or-plywood-for-garage-walls.1427835/ '' > Zinsser qt! Can OSB board - the Home Depot < /a > 5 ) sanding seams high! Durable enough sanding osb seams your most heavy-duty repairs, indoors or out air and water respirator! 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