To resurface an uneven concrete slab, begin by laying a long, straight, 2x4 wooden rail across the concrete-slab floor, with one end positioned on the high point in the room. You can also fill a paint tray with the primer and use a long-handled paint roller to spread it over the floor. unlocking this expert answer. You must find the highest and lowest areas and section so it levels , this can be somewhat a job in itself . I would like to level the floor prior to tiling but have struck a huge problem. After you have left the concrete cleaner for a long enough time, wash the concrete cleaner away with your pressure washer. ACI 117-90, St andard Specifications for Tolerances for Concrete Construction and Materials , gives a level alignment tolerance of … Leveling a sloping concrete floor is a lot easier than it seems. And so, when water drops off the car from rain or more particularly, ice and snow, it drops off onto the garage floor and starts to go in different low spots on the floor. This needs to surround the perimeter of the entire concrete area that slopes. If the board leans or has gaps in certain spots, then you can see where the floor is uneven. % of people told us that this article helped them. Normally the floor should slope towards the drain . To level concrete floors, start by cleaning the floor and filling in any cracks or holes with concrete filler and sealer. To resurface an uneven concrete slab, begin by laying a long, straight, 2x4 wooden rail across the concrete-slab floor, with one end positioned on the high point in the room. The type of product that you would use for that, I think, would probably be a concrete resurfacer. Most concrete products are the same, as it is a very simple product. Nothing seems to be draining. Written by Chloe Meltzer. Make sure that you mix these compounds in the right order. Only about $120 from City Hire near you, and maybe an hours work. To level concrete floors, start by cleaning the floor and filling in any cracks or holes with concrete filler and sealer. This step needs to be done carefully. This is when you will use your hammer and 2-inch nails. TOM: OK. It's important that the floor receiving the cement (the stumps) is in good shape before you even start pouring the cement. To learn how to mix concrete leveler compound, scroll down! The consistency of the self-leveling compound should be lump-free. However, if you want to spray your wood, you should do this before you begin building the frame to make it easier on you. The floor floats from the footings and walls, which show no sign of movement, but the slab has cracked across the middle of the room and one half now slopes down with a pitch of about 3" in 10'. Once dry you can then use the self-leveling compound as described on this page. The square footage of the floor determines how much of the bonding adhesive is needed, and the volume of the slope helps in deciding how much concrete mix is needed to create a level surface. Whether you want to refinish an uneven basement floor, or replace or add new flooring on top of an existing concrete floor somewhere in your home, you most likely will need to level the concrete floor. To learn how to mix concrete leveler compound, scroll down! 3. Hi Robbie. This will work for 2" slope and is commonly done, but you lose the 2" from the slope, and the height of the sleepers, and the thickness of the floor. Concrete floors can also lift or sink if the soil underneath them shrinks, settles or washes away. Age can be the reason that your floor is uneven, and this is not really an issue. BILL: My wife and I built a house about 10 years ago and we have a 2-car attached garage. Take wikiHow’s Wine Course and drink wine like an expert. How To Level Concrete Floor High Spots. Share Tweet. Also, if your floors tend to move or bounce, then this will cause it to crack as well. Finally, let the compound dry per the manufacturer's instructions, which can take 4-16 hours. You should now begin to build a wooden frame. There are 14 references cited in this article, which can be found at the bottom of the page. You also won't be able to perfectly level the floor just by using a subfloor. Follow the dilution instructions for the concrete bonding solution, using water and the small mixing container to make a batch. Plywood and self levelling screed. Wait at least 16 hours before you install moisture-sensitive flooring like carpet. For steeper slopes, you will have to go to a 1-in. This article has been viewed 258,196 times. Use the squeegee to help it out in any spots where it looks like it is pooling or not flowing on its own. SHARES. It hardens quickly, which means it has to be spread actively. If you have the height to raise the concrete floor 1.5 inches, you can use a pea-stone concrete mix and pour a new floor over the existing one. Lui Colmenares is a handyman and licensed home improvement contractor for Mr. There is an epoxy-concrete floor leveling mix that does seem to be quit good , you may have to work in sections . Concrete is one of the most durable and longest-lasting building materials. This is always done with water, but some require more, and some require a bit less. For a successful installation, the concrete floor beneath the tile needs to be more or less perfectly level and smooth. Leveling a floor is pretty simple, but the best way to do it is to start by cleaning your existing concrete, build a wood frame, mix and pour your self-leveling concrete compound, and then let it dry! Laminate flooring on an uneven … Lui is trained and educated as an industrial engineer and specializes in carpentry, painting, and general handyman work such as mounting TVs, doorknob and deadbolt installation, furniture assembly, tile repair, and grouting. Use a level to adjust the string's height on the stake so the string hangs taut and perfectly level between the two surfaces. The self-leveling concrete and water should be mixed by using your power drill with a mixing hook attachment. You can do this in various areas to see exactly where it slopes. This needs to be done because you have to have a method to keep the. 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