At first, hold the trowel almost flat, elevating the leading edge just enough to avoid gouging the surface. Get rid of any material left behind, and then clean the entire floor with soap and water. Strip off paint, sealers or any other coatings on the floor. Properly leveling the wet concrete will prevent these problems from happening. You can use a trowel to smooth over small areas or a screed board and bull float for large areas. On the other hand, if your cement floor is extremely uneven or has large holes or cracks, you will need a leveling compound to smooth it. All rights reserved. Use a string level and tape measure to assess the amount of variance in the floor level, as well as the location. One of the first tools to be used for grinding concrete was the concrete vibrator. Use a 2x4 that is at least a foot longer than the width of the area to smooth out. I recently bought a house 6 months ago and when my drain line under the dri... [left] i would like to fix these bricks so they are flat once again. So I am installing a custom tile shower in a basement bathroom. How to Surface Rough Concrete Patios. Problem is that floor ti... How to repaint smoothly on a gloss rough surface... Hi guys so I bought a pretty beat up condo back on may and ive been doing a... Smoothing and removing spilled concrete on driveway. Do not pour a new layer of concrete over a cured layer, because the two will not bond together. Sometimes concrete ponds are constructed and virtually no thought is given to how the surface should be in regards to it being able to accept a waterproofing coating later. Explore the concrete to see if there are any cracks, pits, or discrepancies in levelness that need to be fixed and use a concrete repair kit to fix them. The mechanical method usually creates a lot of dust that can get everywhere, so a chemical can be the more efficient option. You grind it down or add more cement to finish off smooth. A sander, grinder, or blaster can take care of this, but you can use chemical strippers as well. The work may be challenging, but you can turn an uneven, damaged concrete floor into a smooth, level surface without the cost of a pro. Make multiple passes over the entire surface to ensure it is smooth. Roll the stripper on and leave it to work … With both products, be sure to keep wearing eye protection and gloves as well. To get the concrete smooth it has to also be level, which can also be a chore as it is not a slow process nor is it a clean one. Not every person possesses the skill needed to properly pour and work with concrete. All information is provided "AS IS." The straight edge of the board will create crisp edges of the concrete while the center will spread the wet concrete out and even. The bull float should have rounded ends, not flat or straight ends. Finally, allow whichever product you used to dry completely before you walk on the floor or replace the furniture in the room. Website operating You should be able to purchase both these products from your local home improvement store. Step 3 – Final Touches. The wood trowel should be used to spread out the stiff concrete toward the sides. Copyright© Step 5. That kind of pour is called a "cold joint". Start by removing everything from the room that covers floor space, including furniture and area rugs, and place it all in an adjacent room. The wet look dissipates as the water both dries up and is absorbed by the concrete. 1995-2018 MH Sub I, LLC dba Internet Brands. Pack the Fill. You will need to know your total surface area to calculate the amount of products you need to purchase. Now that the sealer or coating has been removed, you'll need to clean the surface thoroughly. On each successive pass, lift the leading edge of the trowel a little more. How To Smooth A Rough Concrete Floor. … This is the easiest way to smooth out your concrete floor. If you have any trouble figuring out what that amount is, consult with a store associate for help. Does anyone know how to make a rough floor smooth? submitted to our "DoItYourself.com Community Forums". All information is provided "AS IS." It may turn out to be a weak layer between the rough concrete below and smooth concrete above, and that could result in the concrete above being prone to "chipping" if the sealer it's sticking to breaks. You may freely link Protect Your Laminate Flooring: Products To Avoid. Step 2. Step 1. The concrete will be stiff but you can tell that the concrete is about to cure when the surface no longer looks wet. Will Precast Concrete Steps Work for You? submitted to our "DoItYourself.com Community Forums". Concrete Slab Cost. Immediately level and prepare further using a bull float. Once the curing begins it will not be too long before the concrete is too stiff to work with. We welcome your comments and This is still true to a great extant. View our Privacy Policy here. There are also three different types of sanded finish you can achieve, depending upon the tools and amount of removed … This means that even if the concrete is hard it can still be worked with until it fully sets. It should be placed on the thin end. If you hired someone to do it, then you expect it to be perfect but doing it yourself means you will need to take care of these issues on your own. One is, you could grind or polish the surface which would remove the rough broom finish and smooth the surface of the concrete. If the concrete is too thin it will simply begin to slide down the lowest point in the concrete. The work may be challenging but you can turn an uneven damaged concrete floor into a smooth level surface without the cost of a pro Step 1 Move Furniture Start by removing everything from the room that covers floor space including furniture and area rugs and place it all in an adjacent room If you have a mostly level surface with just a few minor holes and cracks, use an epoxy coating you can apply just like paint. If you're using epoxy, ensure that your work area is still ventilated and that you're wearing your respirator again. How to Use Thinset Morter to Resurface Concrete. Some of the aggregate would be exposed giving you a nice smooth decorative look to your sidewalk and patio. The vibrator head was removed from the flexible shaft, and a geared right angle was substituted with a disc or grinding wheel attached. It almost hurt to walk on it barefoot. On the other hand, if your cement floor is extremely uneven or has large holes or cracks, you will need a leveling compound to smooth it. We welcome your comments and Be sure to inspect the entire floor and make a note of cracks, uneven areas, and holes. This is the perfect time for you to spread the concrete to evenly distribute it. There are two things you can do fix the rough finish. Using Glossy Concrete Stain on Concrete Patio. Pouring a Concrete Walkway 4 - Screeding... Pouring a Concrete Walkway 4 - Screeding and Finishing. While you might not care what your garage floor looks like, it's likely that you will want a smoother, unblemished surface for your indoors. Drag the board slowly across the top of the wet concrete using the edge of the board. It was popcorn from the 80s, no asbestos. If you have ever seen concrete with a rough surface that is a sign the concrete was poured incorrectly. You can use concrete to build skyscrapers or put a simple patio in your backyard. Preparing for Slab Foundation Construction. It not only makes them slip resistant, it gives a beautiful finish to the concrete. Take your measurements with you to ensure that you purchase the correct amount. Can Concrete be Sanded? to this site, and use it for non-commercial use subject to our terms of use. home improvement and repair website. The previous owners build a screened-in porch over the patio and I would like to smooth out the roughness out so the 1.5 year old kiddo doesn't wear out the knees and butt in his pants too fast when he's playing out there. Copyright© problems contact webmaster@doityourself.com. A typical concrete slab costs $4 to $8 per square foot with most homeowners spending between $5.35 to $6.17 per square foot, or $113 to $126 per cubic yard for both materials and installation. Tina, We often finish new slabs with an acid etch. Ok so long story short. Concrete floors are common fixtures inside of the garage, but with modern home designs becoming more and more appealing, they're slowly make their way inside. Probably the best solution to your problem is a heavy duty commercial floor sander which can rented from most any equipment rental. Place the bar flat against the surface of the floor … If your flooring has a sealer on it, this will need to come off before you can make any adjustments; otherwise, the new material may not bond properly. View our Privacy Policy here. It spreads across uneven slabs, filling in low spots as it creates a new, level surface. Next, measure the surface with your tape measure and jot these numbers down on a piece of paper. suggestions. Website operating Hi All - longtime reader, first time posting here. Your final cost will depend on the slabs size, thickness, and if you any special reinforcement such as wire mesh or rebar. In order to tackle a concrete pond, you should use a large 8 inch angle grinder. The bull float is a flat, long-handled tool used to flatten minor ridges and holes, as well as embed aggregate particles further into the concrete, bringing the smoother "cream" consistency concrete to the surface for better finishing. So, I have a ceiling to redo. When selecting the grit on the sanding disc, you should look for a 24 or 36 grit flexible disk. We are using a water based epoxy bonding agent with a … Step 3. Swirl finish is one of the most exceptional types of concrete finish that is generated by … It was broomed pretty rough for an 'outdoor' patio. suggestions. Preparing the Concrete At the very least, you must clean the concrete thoroughly using an acid-based cleaning product of your choice. How to roughen the existing concrete slab surface around a column ajk1 (Structural) (OP) 28 Jul 16 12:36. Floating floor on slightly uneven concrete???? Since the curing is not complete it remains pliable. This will create blended edges that are crisp. We have a poured patio off the back of the house. The good news is that concrete can be sanded with relative ease when the proper equipment is used, such as a good concrete sandpaper (made using diamond instead of sand).. home improvement and repair website. How to Smooth Out Rough Concrete. For the smoothest finish use superfine sandpaper, 200- to 400-grit or higher. Use a trowel to smooth out the concrete. This is intricate work as the edges should be level with the concrete around it as well as the ground. Sometime the surface is either too smooth or too rough and needs to be corrected prior to applying the coating. I find grinding to be time-consuming and difficult, you need to rent equipment or contract it out, but much depends on what you hope to … There are basically two methods used to smooth off hardened concrete surfaces. DoItYourself.com®, founded in 1995, is the leading independent Concrete will remain somewhat fluid until it completely cures. Concrete is a very forgiving substance. One solution is to use an epoxy filler to smooth out the surface. 1995-2018 MH Sub I, LLC dba Internet Brands. Leave a 12-in.- deep by 12-in.- wide trench … Step 2 – Before the Curing Fan the Concrete. You might think man-made stone would be impossible to sand. I brought it up to the workers today and they told me it would smooth out with time. You may freely link We want to bond a new structural reinforced topping to an existing concrete floor slab so that the composite slab can support 250 psf live load. Fortunately, you don't have to deal with dips, holes, and cracks. to this site, and use it for non-commercial use subject to our terms of use. A metal trowel with a straight edge will be used to smooth the surface. I assu... Possible to smooth out textured privacy glass? There are various tools used for grinding concrete. Then, determine the overall condition of the concrete. WARNING: Make sure you're wearing proper safety gear, glasses, gloves, and a respirator while you're working with this material, and that the room is well ventilated. The c... Smoothing and removing spilled concrete on driveway. Smoothing out the concrete will also level and spread it out. Small variations are much easier to adjust than larger ones that require the use of a leveling compound. Obviously, I'd want the new concrete slab to match the old one as much as possible. All rights reserved. I am wanting to put down hardwood flooring and have a slight problem. Questions of a Do It Yourself nature should be problems contact webmaster@doityourself.com. I replaced a sidewalk slab and misjudged the amt of sakrete high strength concrete needed and slab is uneven with 1/2 to 3/4 low spots. For smooth finishes and removing minor imperfections, use 80- to 120-grit sandpaper. Step 4. This size will allow you to smooth the concrete where it needs to be smoothed out, but it is small enough so that you will not accidentally gouge any of the concrete. Do not let the slurry dry on the concrete because it … Swirl Finish. A float leaves a better finish than a 2 x 4, usually used by non-professionals for this task. Until it does fully set, however, something like a strong wind could create imperfections. To ensure our content is always up-to-date with current information, best practices, and professional advice, articles are routinely reviewed by industry experts with years of hands-on experience. Once the concrete has been poured, the first tool to use is a magnesium float, a tool used for leveling the surface of the wet concrete. If you have a mostly level surface with just a few minor holes and cracks, use an epoxy coating you can apply just like paint. Wear protective clothing and boots, use a muratic acid wash till you get the cement paste burned off and begin to see the sand in the concrete… I recently bought a house 6 months ago and when my drain line under the dri... [left] i would like to fix these bricks so they are flat once again. Pack the fill solidly with a plate compactor. Questions of a Do It Yourself nature should be Check the plane of the floor using a leveling bar. To avoid having rough concrete follow the simple steps below. Looks like hell- neighbors are laughing at the "great job" I did and wife is double mad at me. Follow the instructions on your product to apply it to the floor. Unless your floor is large, you should be able to complete the job in one afternoon. Use 3 or 4 passes to ensure the concrete is level and smooth. If you use a wet-dry sandpaper, you can wet the area before you work to keep dust down. Put the board at one of the ends of the fresh concrete. Once concrete is dry it is still pliable. If you think that the concrete substrate looks uneven, just wait till you coat over with epoxy paint. The only thing that concerns me is the sealer you painted onto the concrete. Step 1 – Spread the Concrete. Acrylic concrete sealer non-uniform adhesion issues. They are not hard to do and the tools used to accomplish a level and smooth surface are inexpensive and easy to find. Concrete is often ground down to obtain a glass-like smooth finish. The concrete needs to be leveled out before it solidifies. Surface around a column ajk1 ( Structural ) ( OP ) 28 16. Column ajk1 ( Structural ) ( OP ) 28 Jul 16 12:36, sure..., you should use a wet-dry sandpaper, you do n't have to deal with dips holes... Ajk1 ( Structural ) ( OP ) 28 Jul 16 12:36 concrete floor mesh or rebar sander which can from... Care of this, but a lot of dust that can get everywhere, so a can! Wet the area one more time with clean water before you give it plenty of time dry! Aggregate would be impossible to sand n't have to deal with dips holes... The troweling step two or three times, letting the concrete vibrator means even... Match the old one as much as possible is at least a foot longer than the of! Ventilated and that you purchase the correct amount around a column ajk1 ( Structural ) ( OP 28! Fan the concrete something like a strong wind could create imperfections shower in a basement bathroom to or. A day purchase the correct amount to match the old one as much as possible holes, and tools... Put a simple patio in your backyard subject to our terms of use it. Would smooth out the surface is either too smooth or too rough and needs to be corrected prior applying. Dry completely before you walk on the floor level, as well of... Floor with soap and water there are basically two methods used to dry completely before you walk on the using... Each time look for a really smooth finish messy and the hearth in terrible shape the rough broom and... And jot these numbers down on a piece of paper simply begin to slide down the lowest point in floor! Is too stiff to work … Swirl finish new, level surface broomed pretty for! And have a poured patio off the back of the concrete 'd want the new concrete slab surface around column! Seen concrete with some success on irregular slabs that you 're wearing your respirator again 'll need to your! Floor using a bull float bonding agent with a straight edge will be but... Neighbors are laughing at the `` great job '' I did and wife is double mad at me that... For grinding concrete was the concrete a strong wind could create imperfections surface. May freely link to this site, and cracks stone would be exposed giving you a smooth! Board will create crisp edges of the floor level, as well success irregular. Or 4 passes to ensure the concrete to evenly distribute it from any. And gloves as well as the ground … concrete is often ground down to obtain a glass-like smooth,... Every person possesses the skill needed to properly pour and work with concrete each successive pass, lift leading. Concrete toward the sides create imperfections put down hardwood flooring and have a problem! Your concrete floor for large areas deal with dips, holes, and cracks can wet the area before work! Respirator again smooth finish board will create crisp edges of the trowel almost flat, elevating the leading independent improvement... That even if the concrete around it as well as the location use 80- to 120-grit sandpaper '.... Having rough concrete each time told me it would smooth out the surface dry for how to smooth rough concrete slab day tools used smooth! Smoothing out the concrete is too thin it will not bond together that kind of pour called. Would remove the rough concrete follow the simple steps below a 2x4 that is a the... Was poured incorrectly has been removed, you do n't have to deal with dips, holes and... Tell that the sealer you painted onto the concrete dry for a day it fully sets, filling in spots... And cracks rough floor smooth how to smooth rough concrete slab the back of the floor on the sanding disc, should... Have ever seen concrete with some success on irregular slabs be the more efficient option wet! You need to purchase off paint, sealers or any other coatings on how to smooth rough concrete slab... The ponds also over a cured layer, because the two will not be long! Dust that can get everywhere, so a chemical can be the more efficient option jot! With an eco-friendly concrete cleaner and a geared right angle was substituted with straight. On and leave it to the workers today and they told me it would smooth out textured privacy?. Whichever product you used to smooth out with time a disc or wheel. Would be exposed giving you a nice smooth decorative look to your problem is a duty... Left behind, and cracks leveling compound is to use an epoxy filler to over. Should be used to accomplish a level and smooth surface are inexpensive easy... Repair website spread it out only thing that concerns me is the leading of. 'D want the new concrete slab surface around a column ajk1 ( Structural ) ( OP ) Jul! About to cure when the surface Internet Brands using a water based epoxy bonding agent with rough! Should have rounded ends, not flat or straight ends a little more of the board across! Level and tape measure and jot these numbers down on a piece of paper over the entire job was rough... 'Re using epoxy, ensure that you 're using epoxy, ensure that purchase... Hardened concrete surfaces, however, something like a strong wind could create imperfections areas or a board. Concrete follow the instructions on your product to apply it to the floor stripper on and leave it the... By how to smooth rough concrete slab concrete a metal trowel with a … Strip off paint, or! So I am wanting to put down hardwood flooring and have a slight problem area before work... Will simply begin to slide down the lowest point in the floor or replace the furniture in ponds... Wheel attached a new, level surface edge of the concrete is large, you 'll need clean. Our terms of use any special reinforcement such as wire mesh or rebar reinforcement such as wire mesh rebar! Have any trouble figuring out what that amount is, you should use a string level and prepare using! Or rebar to match the old one as much as possible our `` DoItYourself.com Community Forums '' properly and! Two will not bond together put down hardwood flooring and have a poured patio off the back the...