Repairing Large Cracks In Concrete Garage Floor

Chip out the cracked portion with a maul and cold chisel.

Repairing large cracks in concrete garage floor.

With a cold chisel and large hammer undercut the edges of the crack. Epoxy is a common way to fill in larger cracks and so is a polymerized concrete mix. If grease oil or dirt remains in or near the crack clean it thoroughly. This is a two part kit consisting of epoxy and sand.

With a wire brush clean the crack. A 20 foot square of freshly poured concrete will shrink about a 1 8 of an inch in each direction. Sweep away any loose debris then vacuum the crack. Concrete cracks are caused by sideways expansion poor drainage conditions or settling soil beneath the concrete.

The polymer acts as a binder and helps adhere the filler to the rest of the original concrete on your floor. If your concrete is the same height on both sides of the crack you can fix it yourself. One of the best garage floor crack repair epoxy kits is rust oleum s epoxyshield concrete patch repair. When a garage floor is first poured the concrete begins to harden contractors say cure and when this process takes place the concrete shrinks a little.

Wear an n 95 respirator and turn on a fan to blow the concrete dust out of the garage.