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Don’t skimp on the preparation, since cleaning allows the resurfacer to adhere properly to the existing concrete, and patching will help extend the lifespan of the resurfacer. "Spalling" is the mason’s term for pitted or chipped concrete. The key to a lasting repair is to make a saw cut around the perimeter of the damaged area, cutting back to solid concrete. Most repairs that fail do so because the patch is too thin at the edges and breaks off. Set a masonry blade at a 5-degree angle so the cutout is slightly wider at the bottom than at the top.
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To further help decrease shrinking and cracking, consider adding control joints. These are cuts added with the purpose of creating weak spots for future cracks. While the concrete is drying during the first week, spray the area with water several times a day so it evaporates slowly. This is especially important if the weather is hot and dry. As always, cleaning the area is the first step in any concrete repair. Fill a pressure washer with a concrete outdoor cleaning solution and apply it at low pressure to stains, mold and dirt.
If you have to use the area right away, you can buy a special fast-setting concrete, which hardens in about an hour. It costs about twice as much and you won’t have as long to spread and smooth it, so stick to the regular mix when possible. Most building supply dealers that carry regular concrete also carry the fast-setting type. After mixing the concrete, pack it firmly into the repair area using a wood float, the tighter the better. Mound the mix so it’s slightly higher than the old concrete. Then, immediately level it even with the old concrete using a straight board.
Using your sledgehammer, tap it to make the crack in the sidewalk wider at the bottom than the top. Apply a bonding primer, then the first layer of concrete. Textured and concrete-colored products are available to blend smoothly with the existing concrete. Let the new concrete dry as indicated on the label before you drive or walk on it. Put the mix in a large bucket and add water as directed on the label. A mixer paddle attached to a heavy duty, low-RPM drill makes mixing easier.
That’s enough to cover two sidewalk slabs, or about 17 square feet. When the concrete begins to set, use the edging tool to create a slightly rounded edge to match the step. In the event you loved this short article and you wish to receive more details regarding Www.Hook2Events.Com generously visit our website. Then, remove the form board and finish all exposed surfaces with a float or trowel to match the texture of the old concrete. Cover the patch with plastic and let it cure for at least two days before walking on it.
The happy medium between concrete repair and replacement costs is the process of resurfacing. When your sidewalk has so many patches that it’s barely recognizable, adding a new bonded layer of concrete returns it to its fresh state. Regardless of what's caused your sidewalk to sink, settle or crack, we can fix it. At Thrasher, we begin with PolyLevel to lift, level and stabilize your sidewalk. And as we’ve noted, concrete sidewalk repairs cost between $3 and $20 per square foot on average when you hire a professional or an average of $8. If repair costs outweigh the cost of replacement, it’s time to consider a whole new slab.