Sikaflex in a tub sealer self leveling or crack flex
A licensed professional.
You can choose from a couple of different methods to repair a crack in a basement floor. The process I typically use is grind out any loose concrete and debris to a depth of ⅜ to ½ inch. Then coat the crack with a generous amount of liquid bonding agent. Finally you fill the crack with concrete pach or a mortar mix with a high Portland count, such as type S.
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