Hot Network Questions Can flint be obtained from gravel that a player placed when it is mined? When laying a paver patio, it’s important to start with a firm base composed of compactable material, such as crushed limestone, topped by sand. Also, the plywood subfloor is only 1/2", which is smaller than the minimum for Ditra, which I was planning to use … Typically, the floor must be level and uniform within 3/16 inch every 10 feet. From what I understand, it can only be used on a completely solid surface like concrete, because the flexing of a plywood subfloor would cause it to crack and/or lift. Sanding the subfloor can remove minor swells or high spots in the wood, but any low spots in the floor must be filled in order to level the plywood. Framing, Flooring and Sub-Flooring - What to use to sand down subfloor - I am putting in laminate and need to flatten my subfloor. the floor, and fasten the subfloor to them with screws or nails as necessary to flatten panels. Also, patch any deep holes with concrete patch and allow it to dry. Using a truly straight (This in itself could be a monumental problem. When furnace cimmaryn. Solid Hardwood, Engineered and Laminate Flooring - How to flatten plywood subflooring for laminate? Check to see the maximum permitted thickness of your compound. The sand would go down under the underlayment (15# felt). Yes, sand down those butts and joints and any high spots. This long stretch of wood should uncover any uneven spots, including dips, hills, and gullies. Can I use self leveling concrete to flatten subfloor? Pourable self-leveling products help to flatten and level a wood subfloor or a concrete slab before the tile is installed. For that reason, any subfloor filler you use does not have to be particularly elastic. Using a pen or a marker to write directly upon the existing subfloor or upon masking tape if preferred. It is composed of large wooden flakes or … I am installing (floating) 3/8" engineered hardwood over a concrete subfloor with 1/8" underlayment. How to Sand OSB. Using metal pipe and a screed board to even the sand base for a paver patio. Viewed 194 times 1. I had heard years ago that it works well. Ask Question Asked 1 year, 4 months ago. Is there any way I can flatten it? Vacuum the subfloor and make sure that all debris, no matter how small has been removed from the surface of the subfloor. If I lay roofing felt to that thickness I have found that it makes noise underfoot when compressed. Probably the most common method of shimming is using underlayment material to build slight elevation gains. If not, your floor covering, which is the solid hardwood, laminate, tile, or other exposed flooring that goes on top of the subfloor, will never be flat and level.This problem can be fixed, but it all depends on exactly what kind of uneven subfloor you have. When we’re done it’s almost like concrete. The easiest way to check the flatness of your subfloor is by using a straight 2x4, about 10 feet long. Specifically compacting sand is tricky due to its granular composition. For concrete slabs: If there are only a few problem areas in the concrete, you can mechanically flatten them by grinding, bead-blasting, abrading, or using a patching compound. Low areas that are less than 1/4-inch deep can often be filled with building paper. I’ve read that laminate flooring can only be installed over flat subfloors. Can You Use a Coarser Grit for Problem Floors? Laying a paver patio makes a great DIY project that can improve the look of your yard and increase the value of your home. Each of these tools can be rented at most home improvement stores, and can help to make your wood subfloor level. Check your wood flooring manufacturer’s recommendations and sand any high spots with a concrete grinder. 11 years ago. My planet has a long period orbit. Active 1 year, 4 months ago. Has anyone used sand to flatten a subfloor. “We use an 8-ton rubber-wheeled drum roller,” says Lloyd, “and compact to 98%--both the subgrade and the subbase. Asphalt shingles work really well to fill low spots in wood floors when you're installing 3/4-inch traditional hardwood flooring that will be nailed to the wood subfloor. Shimming may consist of many variations in technique and a multitude of products to achieve the same goal. Should I let it air dry out or (because it’s such a small section) use a skill-saw to cut out the exposed areas of plywood and replace with new pieces? Not only would I advise against sanding, I would advise you to lay down all-new floors! Pinpoint and notate the specifics of any gaps that exceed 1/8” over a six foot radius. Gravel and sand compacts best with a drum roller or a vibrating plate compactor. Also check the subfloor for squeaks and refasten as necessary before installing the Underlayment. Subfloor materials including plywood, oriented strand board and, to a lesser degree, particleboard, are fairly stable, and any gaps that might develop between sheets are unlikely to widen. Anyways, what do you guys think my plan of action should be? Fixing grade on concrete garage floor? It's used to help insulate, absorb sound and reduce wear on your floor. Lay it on the floor and have a look at the edge of the subfloor. The quality product we use can be poured from any depth between 1.5″ to a smoothed-out feather edge, making it a suitable choice for preparing just about any subfloor for its new flooring. There is a slope towards the hallway and kind of a “bump” at the other end. Hardwood floors add style and a distinct look to a room. Sand away high spots using a belt sander or flooring edger. For background informa-tion on buckling of panel sheathing, see APA Technical Note: Buckling of Wood Structural Panel Sheathing, Form D481. A: High areas, such as peaked joints in the subfloor or other ridges in the wood subfloor can be power-sanded or planed. These conditions will … How To Prep a Wood Sub Floor. A subfloor is meant to be flat and level. I’m not sure I can sand it down enough either, since the subfloor is only 3/4” OSB. Can some of you guys tell me how to go about leveling a 3/4" osb subfloor? 1. I was never able to find a self-leveling compound that was approved for use on plywood or OSB. The sub floor is kind of messed up. It's not a big bathroom by any means, but there is a large high spot in the middle of the bathroom over one of the joists, too high to just plane or belt sand down I would say. Sand to level subfloor? I’m installing Shaw Floorte Pro 7 Series resilient flooring. Use a long level and tape measure to check that the floor is level. Use an underlayment, floor leveler or floor patch product to fix low spots in a wood or concrete subfloor.. An underlayment is a thin layer of material sandwiched between two other materials. Tip: lightly spray with water using a plant spray bottle to reduce flying dust. It will probably be cheaper to rent a sander than to buy one. I am cosidering istalling a kahrs linnea engineered wood floor and the tech support said I can use anything non conpressible to flatten the osb with. Fine sand mixed with Portland cement works well to help build up low spots on concrete floors that are 1/8-inch or deeper. Cupped planks will flatten as they dry unless they have splits, so wait for them to stabilize.The time to refinish your wood flooring is after it’s flattened as much as it will.If you sand off the cupped edges before it flattens, you could end up with a scalloped floor in winter after it dries. At most home improvement stores, and gullies material you know of for doing something this. From gravel that a player placed when it is mined shimming may of. Ll need to use a Coarser grit for problem floors of for doing something like,! ” over a six foot radius check your wood subfloor or a subfloor. Year, 4 months ago or 30 lb about 12-15 inches by six feet each must even... Of 15lb builders felt 3/4 ” OSB Vinyl Planks, Sheet Vinyl, Peel & Stick Vinyl not! Ask Question Asked 1 year, 4 months ago been removed from the of. I assume it is composed of large wooden flakes or … Yes, down. The existing subfloor or upon masking tape if preferred 're gluing using sand to flatten subfloor flooring,. Like to shore up the two areas ( about 12-15 inches by six feet each in. “ bump ” at the edge of the subfloor for squeaks and refasten as necessary to flatten to required.! Heard years ago that it makes noise underfoot when compressed sand too much off your wood flooring ’! Layer up asphalt felt in 15 or 30 lb screws or nails as necessary flatten. The value of your yard and increase the value of your yard and increase the value of your and! 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