How To Fill Large Cracks In Concrete Patio

This technique will work for cracks smaller than 3 8 inch wide in the sidewalk driveway garage floor basement or steps.

How to fill large cracks in concrete patio.

Instead for cracks up to 1 2 inch wide and 1 4 inch deep you should use a polymer based sanded acrylic latex filler that you inject into the crack with a caulking gun and smooth over with a putty knife. Then power wash the area and squeegee off the excess water before applying the concrete crack filler. The secret to fixing wide concrete cracks is to undercut the sides of the crack to give it an inverted v shape. But you have to enlarge the crack photo 1.

Prepare the cracked. Best for large cracks. Change to a high pressure nozzle on the pressure washer and finishing cleaning the driveway on high power following the instructions on the cleaning solution. This helps the repair material to key into the crack creating a mechanical bond in addition to the chemical bond between the patch material and the concrete.

Concrete crack sealants are specifically made to fill up and repair thin cracks up to half an inch. Concrete cracks cannot be patched with concrete since concrete contains aggregate rock pieces that are too large to fit in cracks. Here you actually want to mix a new batch of concrete and simply fill the cracks with that. Let the concrete dry before filling the cracks.

How to repair wide concrete cracks. Fill with a polymer modified cement such as quikrete concrete resurfacer no. Filling small cracks in concrete keeps them from turning into big holes. Fill a pressure washer with a concrete outdoor cleaning solution and apply it at low pressure to stains mold and dirt.

The consistency of crack sealants is such that it can be used only on horizontal surfaces such as patios garage floors driveways etc. This last option works best to fill large cracks or chipped edges while the other products are suitable for cracks in concrete that are inch wide or narrower. For this project you ll need.