How To Fix Concrete Cracks In Floor. The first step to repair concrete cracks is to roughen the edges of the crack as you will eventually be filling the crack with a sealer. How to Repair Cracks in Concrete.
The first step to repair concrete cracks is to roughen the edges of the crack as you will eventually be filling the crack with a sealer. Allow 8 to 12 hours for the patch to cure before painting. Vacuum out the crack to remove any dirt debris and loose concrete.
Fill the grooves and the crack with a polymer-modified cement.
Best for Very Small Hairline Cracks. Allow the adhesive to dry completely. Add the resurfacer Spread the resurfacer Pour concrete resurfacing mixture into the crack and smooth it out with a rubber floor squeegee. 35 Step 5 Applying Epoxy on the Concrete Spalling.