How To Repair Large Cracks In Garage Floor

With a small paintbrush coat the crack surface with concrete bonding adhesive.

How to repair large cracks in garage floor.

A 20 foot square of freshly poured concrete will shrink about a 1 8 of an inch in each direction. Vacuum away all concrete debris. Even if that happens you can use the tips above on how to fix cracks in the garage floor or the tips below on how to fix an uneven floor. Sweep away any loose debris then vacuum the crack.

Before attempting the repair job consider the underlying cause of the crack to prevent future damage. 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. Preparation and repair tools and methods depend on the crack width and quantity of cracks. How do you fix garage floor cracks.

Be sure to wear eye protection. For example large trees near your garage may have roots that reach under the floor disturbing the cement and causing it to crack. This will help hold the patch in place. Fill the crack with epoxy based concrete crack filler.

Some cracks will be due to both these reasons. Use a wire brush a hammer and cold chisel or an angle grinder with a crack chasing wheel to loosen and break off nearby concrete. New homes cracks that occur in the first few months or years. There is little point repairing the crack if the floor is going to open up again in a couple of months time.

An issue may arise if the cracks continue to widen over time. With a cold chisel and large hammer undercut the edges of the crack. If grease oil or dirt remains in or near the crack clean it thoroughly.