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.
Filling large cracks in concrete patio.
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.
Choose your concrete repair product.
Concrete surfaces cannot be repaired with concrete.
First use a small hammer and chisel in combination to knock away any.
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.
Cleaning the crack area.
Removing chunks what you never want to do when filling cracks in concrete is to just pour the filler in there.
Power wash you do want to remove as much dirt and debris from the crack as humanly possible too.
Concrete cracks cannot be patched with concrete since concrete contains aggregate rock pieces that are too large to fit in cracks.
If desired clean the crack with a pressure washer or a garden.
Step 7 finish epoxy fillers don t require finishing but concrete fillers should be finished with a wood float or metal trowel and then covered for about five days wetting the surface once a day.
Preparing the crack step 1.
The consistency of crack sealants is such that it can be used only on horizontal surfaces such as patios garage floors driveways etc.
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.
Instead use a concrete.
Prepare the cracked area for patching.
Note that there s another variety that is self leveling which i decided wasn t appropriate for my needs.
Its recommended to use both a hammer and chisel to enlarge the split enabling the cement mixture firmly to stay in place.
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.
Undercutting of larger cracks.
Remove all water and.
Remove all debris from the crack using a wire brush.
Choose your concrete repair product.