In colder weather, it takes longer for concrete to cure. If cracks are deep it may be necessary to apply in 1/4-inch deep layers. Because concrete is a hard, dense material, screws embedded 1 inch (2.5 cm) deep are sufficient for hanging light-weight objects. Let Hometown help you find a qualified, local contractor. Use secret cement paint to bond overlay to the old concrete; Dampen old concrete slightly before applying the cement paint; Cover the overlay with plastic to cure it for 48 hours; DEAR TIM: My concrete sidewalks and driveway look horrible. The national average cost for concrete removal is $825. Our condominium board plans to have a decorative concrete overlay applied to our 35- year-old concrete walkways, which have existing cracks and many unlevel areas. Step 9 Add concrete to any low areas and screed level. The strength of concrete is measure in terms of pounds per square inch (or PSI). However, getting the adhesive off the concrete may prove to be more difficult. Sand down the area surrounding the bolt to about one inch outward with a concrete sanding blade. The surface of the concrete should be relatively flat and slightly above the form. Wide cracks in concrete are best patched and sealed with a concrete patching compound. Cover any doorways or windows that lead to other living areas, as grinding concrete creates a lot of dust, even with the use of a vacuum hose. Fill in the hole with a concrete patching solution. Colored concrete will cost you an extra .75 – $1.25 per square added to a basic concrete mix. Step 8 Screed the concrete using a straight 2x4 by moving the board back and forth across the surface of the concrete in a sawing motion to remove the excess concrete and smooth the surface. First you must discern whether the concrete is solid or pre-cast concrete. The holes are cleaned with compressed air then the slurry is mixed and poured into the holes. They are intended to be spread in thin layers from 1/16 to 1/2 inch thick. The anchors can be removed, but the process is challenging. If reinforced, the concrete removal cost per square foot could be about twice as much as unreinforced due to the … Get fair costs for your SPECIFIC project requirements. To use this material requires drilling a series of 1 1/2-inch-diameter holes to 80% of the concrete thickness. Since the concrete overlay is only 1/4 inch thick you are not going to need large pieces of equipment like a jackhammer or even a heavy sledgehammer. Jackhammer to break up concrete that’s thick. Check out the detailed steps for pouring a perfect concrete slab here. Clean the tools immediately with water. The holes should be located about 8 inches apart in reinforced concrete. BBQ Grease Removal Instructions. Simply pouring wet concrete into a hole in your driveway, sidewalk, or basement floor won't make for a lasting repair. Provide ¾-inch clearance or 1.5 times the largest sized aggregate in the repair material, whichever is greater, between the steel and surrounding concrete to permit adequate flow of the repair material. Most homeowners pay between $650-$1,090.Prices on the low end start at $295.On the high end, prices average $4,149.The total cost for concrete removal will depend on its square footage and any special features the project has. Concrete removal costs $2 to $6 per square foot (including demolition, loading, hauling, and disposal) but could cost more depending on the difficulty and scope of the job as well as the local market. If that doesn't get the glue off, you will need to use a commercial adhesive stripper to soften and remove … Cut the head off the bolt. See typical tasks and time to remove a concrete slab, along with per unit costs and material requirements. Screed Board Basics. And wear protective gear when using digging equipment. Scrub and rinse. The cost to remove concrete depends on factors like whether the concrete is reinforced or where it is located. How to Remove Steel Poles in Concrete. Step 10 Generally it takes for about 7 days for the concrete forms to be able to be removed. Allow the material to dry for two hours between layers. Cut into the concrete about 1/4 inch deep before beginning to break it up, and not only will it break easier, but it will tend to break along the cut lines and make the concrete pieces more manageable. The product comes in a squeeze tube, and fills and seals cracks in concrete up to 1/2-inch wide. If temperatures drop below freezing, the curing concrete needs to be heated to cure properly. We think it would take too long to remove the entire 4-inch surface slab with a scabbler or a planer. Step 1 Clean the surface of the damaged area by removing any loose material such as dirt, oil, or grease and unsound or flaking concrete. How to Remove Paint Stains from Concrete While a slight hint of color might always remain if you spill a large amount of paint onto unsealed concrete, you can remove most of the mess. That concerns some of us. Concrete Fasteners, Inc. 1231 E 26th St Cleveland, OH 44114 United States of America Call us: 1-216-357-7433 It is the time between placing the concrete forms and the removal forms of the concrete. Leave for 24 hours. Concrete Removal Calculator . Removing the forms after two days leaves just enough give in the concrete to round or otherwise smooth the areas covered by the forms. Start by scraping the glue with a pry bar or scraper. Be sure to keep spare bits in the correct size on hand as working in masonry can wear out a bit quicker and result in improperly drilled holes. Attach a metal cutting blade to a rotary tool. Patching compounds typically are mixed with water and applied with a trowel. 17 / 30. It could be different from one another since they might have used different types of the cement and also the shape of the formwork. Smaller cracks, less than 1/4 inch wide, can be repaired with a concrete caulk or liquid filler. On average, concrete removal costs roughly $2 - $6 per square foot, but this will vary depending on the complexity of the project, how easy the concrete is to access with equipment, where you live, and who you hire. Otherwise, get a 5/32-inch bit for concrete screws that are 3/16-inch in diameter and a 3/16-inch bit for ¼-inch screws. If your juicy steak splattered grease on the concrete patio, don’t panic. ft.) might be priced as low as $1 per square foot, while companies might charge more for … Holes 1 inch or deeper require a concrete mix with coarse, crushed-stone aggregate, which bonds well with existing concrete. Existing driveway removal – This normally runs in the neighborhood of .50 – $1.50 per square foot. For some reason, the top 1/8 to 1/4 inch of the finish surface has peeled up in patches. Step 2: Remove Crumbled Pieces. These anchors are intended to be semi-permanent or permanent. Other times you may see that the concrete is bulging upwards. How To Break Up and Remove Concrete Before digging, call 811 or your “Dig Safe” authority. Masonry anchors look similar to bolts or screws and are designed to be inserted into concrete, stone, brick and other hard surfaces that traditional screws cannot penetrate. As you pull, slide the screed board back and forth to help you prevent voids in the surface. When working with cement-based products, always wear eye protection and waterproof gloves. Small cracks are easy to patch with Quikrete Gray Self-Leveling Concrete Crack Seal. Shallower holes need a sand mix. 1. 1… Usually, these consist of a blend of Portland cement, fine sands, polymer modifying compounds, and other additives that make the surfacer easy to apply and spread over existing concrete surfaces. make a paste of powdered laundry detergent and water. The thicker the concrete, the longer it will take to demolish. Our concrete removal guide will help you decide which route is best for you—doing it yourself or hiring a contractor. The cost to Remove a Concrete Slab starts at $8.27 - $10.05 per square foot, but can vary significantly with site conditions and options. PSI is a measure of compressive strength, or the ability of the material to carry loads and handle compression. We screen thousands of them to ensure you can find the most reputable company that fits … QUIKRETE Vinyl Concrete Patcher or QUIKRETE Concrete Patching Compound may be used. Thus, the thicker it is, the more time it will take to remove, and the more it will cost. Step 1 - Determine the Type of Concrete. If the concrete is solid, then there are a few steps involved to remove them. Sand or cut down the top of the bolt so that it is below the surface of the concrete. Have a helper add or remove concrete in front of the screed as you pull it. If the concrete is pre-cast and hollow, then the steps are easily carried away without a problem. Remove the saw from the concrete and let it spin freely; this provides an opportunity for the saw blade to spit out any dust clogging it up and cool down. Clear up any debris with a shop vac. This involves the use of heavy equipment, such as: Jack hammers, Bobcats, etc. Removing vinyl from concrete is similar to removing it from subfloor. The board members want to apply a 1/8- to 3/8-inch overlay, but that doesn't seem to … Large jobs (over 1,000 sq. See professionally prepared estimates for concrete slab removal work. Maybe the demo of the conrete plus removal was 3 dollars a foot, but pavers themselves, even the cheap ones cost $3.00 a foot just for the materials and you still have to put in aggregate bass,plus sand finish and sweta equity. If you're removing an old metal fence from your yard, the most difficult part of the procedure is pulling out the posts. You can remove the stain with items you already have at home. If you’re not sure about the thickness of the concrete slab you wish to remove, a 4 to 6-inch thickness is the norm, and the calculations which follow will be carried out for various thicknesses. Concrete weight and removal. With two scabblers we spent a week removing the top 1/4 inch of concrete, but the deck still produced a hollow sound when we pulled a chain across it afterwards. Heavier-duty projects require longer screws or concrete anchors, which should list the minimum embedment on the packaging. Its impossible for anyone to remove concrete on a pool deck AND add pavers back for $3.00 a foot. Keep reading to learn more. This is a problem that can only be fixed by removing both the overlay and the concrete surface underneath. You have to prep the edges correctly and use the right materials. Cover the stain with 1/4 inch of paste and securely tape plastic wrap on top. Pull back the excess concrete with the screed board. You can "score" the concrete in a grid pattern with a concrete saw to make it easier to break.