Filling Large Cracks In Concrete Patio

Remove all debris from the crack using a wire brush.

Filling large cracks in concrete patio.

Undercutting of larger cracks. Ever wondered how to repair large cracks in a concrete patio bigger hairline cracks require an undercut for a quality fix. Concrete surfaces cannot be repaired with concrete. The consistency of crack sealants is such that it can be used only on horizontal surfaces such as patios garage floors driveways etc.

If desired clean the crack with a pressure washer or a garden. Concrete crack sealants are specifically made to fill up and repair thin cracks up to half an inch. 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. Note that there s another variety that is self leveling which i decided wasn t appropriate for my needs.

Concrete cracks cannot be patched with concrete since concrete contains aggregate rock pieces that are too large to fit in cracks. Instead use a concrete. Choose your concrete repair product. Cleaning the crack area.

Remove all water and. For very large cracks mix a thick paste of standard concrete and thoroughly fill the crack forcing the mixture into the bottom of the crack first. Removing chunks what you never want to do when filling cracks in concrete is to just pour the filler in there. Choose your concrete repair product.

Once the backer rod is in place the next step is to apply the concrete crack sealant. Power wash you do want to remove as much dirt and debris from the crack as humanly possible too. How to repair wide concrete cracks chisel the crack with a hammer and masonry chisel to widen the base of the crack and to dislodge any loose material from. Its recommended to use both a hammer and chisel to enlarge the split enabling the cement mixture firmly to stay in place.

After hurricane harvey took out a big tree in my driveway and caused some serious cracks i made a time lapse video of fixing them this is not a how too t. Preparing the crack step 1. My goal was to create a waterproof concave lip between the wall of the house and the patio and the self leveling sealant obviously not designed for that.