how to repair hairline cracks in concrete garage floor

Patching compounds typically are mixed with water and applied with a trowel. We are no longer supporting IE (Internet Explorer) as we strive to provide site experiences for browsers that support new web standards and security practices. 1131.

Necessary cookies are absolutely essential for the website to function properly. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. In some areas, because the original crack was deep, I have a 1/8 to 1/4″ wide, 1/8 deep epoxy “pouch”. Narrow cracks can be deep, often extending through the entire thickness of the concrete slab. If your concrete is the same height on both sides of the crack, you can fix it yourself. Then power-wash the area and squeegee off the excess water before applying the concrete crack filler. Fill with a polymer-modified cement such as Quikrete concrete resurfacer No. Wear an N-95 respirator and turn on a fan to blow the concrete dust out of the garage. Add latex modifier to regular concrete mix and pack it into the channel. Fill the crack with the repair material, following the manufacturer's directions. However, the color of the patch will look like new concrete and will not match the old concrete. Paint or seal the surface of the patch and surrounding area, if desired. But opting out of some of these cookies may affect your browsing experience. They have a texture similar to grout and can be smoothed and textured to blend with the surrounding area. Apply this to the crack with a putty knife, and smooth the surface off to be level with the rest of the floor. Therefore, it's a good idea to start the repair by stuffing foam backer rod into the crack to create a base to hold the repair material.

It's OK if the surfaces are wet, but there should be no pools of water.

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Drilling Concrete and Installing Fasteners, How to Fix Sidewalks That Are Chipped and Pitted, Here’s Why You Shouldn’t Use Salt on Concrete, We are no longer supporting IE (Internet Explorer), Guide to Gas Fireplace Servicing and Maintenance, The Comprehensive Winter Storm Prep Checklist, Do Not Sell My Personal Information – CA Residents. Establish a solid base for the resurfacer by filling the opening with concrete and letting it dry (see Photo 3).

Fill to within 1/2 in. Our crack was wide and deep, so we chiseled out the entire opening and refilled it (Photos 2 and 3). Using a diamond blade on your circular saw, cut a 1/2-in.-deep groove along each side of the crack. Narrow concrete cracks can be filled using masonry crack elastomeric filler that can be applied with a caulking gun. Work carefully to remove all dust and grit from the crack. Mix the powder with water to form a paste (about the same consistency as toothpaste). The secret to fixing wide concrete cracks is to undercut the sides of the crack to give it an inverted "V" shape. Then fill the remainder of the groove and smooth it over. Concrete cracks are caused by sideways expansion, poor drainage conditions or settling soil beneath the concrete. This will help the Epoxy coating to properly cure and not bubble or peel with time. If desired, clean the crack with a pressure washer or a garden hose and spray nozzle. Trowel the compound into the crack. Remove the chipped pieces and vacuum out the crack before power washing. Chip out the cracked portion with a maul and cold chisel. Smaller cracks, less than 1/4 inch wide, can be repaired with a concrete caulk or liquid filler. We also use third-party cookies that help us analyze and understand how you use this website. Chisel the crack with a hammer and masonry chisel to widen the base of the crack and to dislodge any loose material from the old concrete. Remove all debris from the crack, using a wire brush.

Juan Rodriguez is a former writer with The Balance who covered large-scale construction. Home House & Components Rooms Basement. Smooth the surface of the patch with the trowel, feathering the compound into the surrounding concrete. Hiding the patch completely requires painting the surface with an appropriate concrete paint. If you use these links to make a purchase, we may earn a small commission – Thanks! Garage Floor Resurfacing: Fix a Pitted Garage Floor. Using a diamond blade on your circular saw, cut a 1/2-in.-deep groove along each side of the crack. For hairline cracks, applying repair caulk or crack filler over the cracks usually is not effective, as the caulk tends to peel off of the surface over time.

Fix the crack in your concrete garage or basement floor yourself by following these step-by-step directions. Our latest shed is also a pavilion—and you can build it, too!

To repair a small crack in a cement garage floor, use regular cement. Stab the trowel into the compound to remove air pockets and help work the patching material deep into the crack. I used Rustoleum concrete patch last year to repair the garage floor crack. Then either replace the sunken portion or call a mud-jacking company to raise it. Complete DIY projects like a pro! Let it set up for a few days, then fill with resurfacer. of the original height. so now I see shallow groove along the repaired track. He is an engineer with experience managing and overseeing large civil works construction.

Before applying any Epoxy floor coating, it’s important to properly assess the concrete and repair any damage, including sealing cracks. Backer rod is solid in a variety of sizes; use a rod diameter that is slightly larger than the width of the crack. These cookies do not store any personal information.

It is mandatory to procure user consent prior to running these cookies on your website. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Add water to the resurfacer mix to get the consistency of pancake batter for the concrete crack filler. First, begin by identifying the type and cause of the cracks. Remove all water and debris from the crack with a wet/dry shop vacuum or a brush. Mix the concrete patching compound, following the manufacturer's directions. These cookies will be stored in your browser only with your consent. We recommend our users to update the browser. Very small cracks, such as hairline cracks, can be repaired using a vinyl concrete patching compound applied over the crack and then smoothed with a putty knife or trowel.

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