Repairing Large Cracks In Concrete Porch

Pack a small amount of anchoring cement.

Repairing large cracks in concrete porch.

How to repair wide concrete cracks. The secret to fixing wide concrete cracks is to undercut the sides of the crack to give it an inverted v shape. Wet the surface and apply a concrete bonding agent. Using a chisel make the crack wider at the bottom than the top.

Prepare the cracked. You will need a tube of vinyl concrete patching material a wet rag a soft bristle brush and a wire brush. Concrete cracks cannot be patched with concrete since concrete contains aggregate rock pieces that are too large to fit in cracks. 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.

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. The first part of repairing the cement slab is to seal any cracks to prevent them from spreading up into the new layer of concrete that you will use to level the surface. Fill the crack with patching mix also know as vinyl concrete step 4. 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.

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.