how to sand subfloor

This article is part of our series on installing hardwood flooring. Thoroughly vacuum the existing floor, and use a long floor leveler and tape measure to ensure the subfloor is level within 3/16 inch for every 10 feet. Watch out for nail and screw heads as you sand. Installing 3/4 hardwood on all of the lower level. Over time it’s also possible that 5/8″ plywood running parallel instead of perpendicular could sag but again, probably not that big of a deal. What do you think? Sometimes I am doing a plywood subfloor leveling with a wood edger. Sanding of the thickened area should be delayed until the panels have dried. Step 3: Identify a method to determine what constitutes “level.” We decided to use a piece of the hardwood we are installing which registered as flat against our 4 foot level. I’ll have to remove the flooring and re-install it, since I was a bit careless in making sure the floor was flat. Sand the floor with the orbital flooring sander and 80-grit sandpaper. I've been using a … You must make precise cuts on the subfloor material since it will be resting only on half of the neighboring joists. Make your plywood subfloor preparation sorely: clean up all garbage from it. Fill with wood filler. Set popped nails below the surface of the plywood with a nail punch and hammer. Paint the floor with at least two coats of quality floor paint. Rent a machine with a dust-collecting bag to minimize the dust. Step 2: Set the blade on your circular saw to the subfloor depth (no more!) Span rated OSB (or plywood) is typically applied perpendicular to the joists, again for span rating (load rating). Advantech looks akin OSB, but it is OSB on steroids. If you are able to preserve the existing subfloor, you may be able to re-use it (we didn’t). As with every article on our site, use this information at your own risk! Span rated OSB (or plywood) is typically rated for continuous span over several joists. This process was fairly simple and straightforward–the details are below. Not sure if this room is also getting your layer of additional plywood, if so that will help a bit. There are also other safety hazards–such as the gaping hole left by the subfloor being removed mid-process. We got as close to the walls as practical in our situation. Step 5: Plane the joist until level with the neighboring joists. Step 1: Locate the centers of the joists on either side of the offending joist and mark these on the floor using chalk line. This process is much easier if you know the approximate location of the joists (we can see them from our basement). Let it dry, sand it lightly with a pole sander and 150-grit sandpaper and vacuum the floor. Complaits of sand being poured on my floor quit that practice. Thanks for visiting! I’d seen the asphalt shingle approach mentioned by a builder on another site, so I tried that first. 2 Phillips bit to sink any heads that are above the surface. Sand the floor to 100 grit sandpaper, remove edger marks, and screen entire floor. Hi, we're Ethan, Jocie, Kim and Fred. How to Pull Up Carpet and Paint the Plywood Floor, Renovation Headquarters: Removing Staples When Lifting Wall-To-Wall Carpeting, Quasius Equipment, Inc.: Orbital Floor Sander, How to Install Unfinished Oak Hardwood Flooring, How to Paint a Floor Until You Can Afford New Carpet. shows and demonstrates the shape your subfloor needs to be in to install underlayment ,and what to look for while sandinig and prep before sanding 4. You'll need to know how to level a floor: Just sand any high spots and fill the low spots with leveling compound. If you do, you’ll have the exact opposite problem on your hands. Self explanatory. I will be installing laminate flooring soon and have been flattening the subfloor (made of concrete or gypcrete) in my bedroom. Make sure to remove stray nails or staples. I may have to live with this floor for an indeterminate period of time, maybe years. The key in this step is to not over-plane. Remove carpet staples with a mini pry bar or a slot screwdriver, hooking the beveled end of the bar or the head of the screwdriver under each staple and prying it out. Also, is there a minimum gap allowed between sheets of plywood/osb or should they basically be touching? However, we are laying 3/8″ plywood on top of this OSB, and 3/4″ hardwoods on top of that for a very high strength floor. It is also comprised of fine sand and a bonding agent like latex or polymers as well as a water-retaining agent like an alkyl derivative of cellulose. In our situation we laid the subfloor parallel to the joists which creates a weaker subfloor. 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). floor boards and reinstalled them. Can I remove the plywood and plane the 2X6 to compensate for the crown in the 4×6 beam and then reinstall the 3/4 plywood? Up first in hardwood flooring week is tackling a particularly challenging section of our subfloor that couldn't be leveled using our asphalt shingle subfloor leveling method. Up first in hardwood flooring week is tackling a particularly challenging section of our subfloor that couldn’t be leveled using our asphalt shingle subfloor leveling method. Let the floor dry completely before continuing. the problem area is about 16′ by 10′. The room is 12 x 16. Sand the water-damaged area with a medium-grit sandpaper by hand or by using an electric sander until the spot is flush with the dry areas. Work it into all the joints, knots and nail holes and let it dry overnight. Prime the floor with a high-quality floor primer to seal the wood and provide better adhesion for your topcoat. Great post! Watch my Family take on the task of painting our plywood subfloor in our new house.

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