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.

Repair large cracks in garage floor.

Preparation and repair tools and methods depend on the crack width and quantity of cracks. Another reason for cracks on the floor of your garage is an improperly placed expansion joint. Wear an n 95 respirator and turn on a fan to blow the concrete dust out of the garage. Cut small grooves on both sides of the concrete.

This is easily repaired by injecting silica sand and a compound for floor crack repair into the garage floor crack. Using a hand grinder i leveled the floor on each side of large crack and widened it to the wide of the grinder. Cleaning and resurfacing the floor usually takes one day on the other hand clearing out your garage so you can work may take weeks. Sweep away any loose debris then vacuum the crack.

You ll also need to buy or rent some special tools so expect your total cost to be about 300 for this how to resurface concrete project. With a cold chisel and large hammer undercut the edges of the crack. The cost of resurfacer for a two car garage is typically less than 200. In the video below i ll show you how we repair garage floors that have a crack in them.

With a small paintbrush coat the crack surface with concrete bonding adhesive. 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. Before attempting the repair job consider the underlying cause of the crack to prevent future damage. This will help hold the patch in place.

Fill the crack with epoxy based concrete crack filler. For example large trees near your garage may have roots that reach under the floor disturbing the cement and causing it to crack. New homes cracks that occur in the first few months or years. How to do it.

If grease oil or dirt remains in or near the crack clean it thoroughly. Getting a professional to fix these types of cracks early can lead to less long term damage and the sooner you get it sorted out the better. With the right materials and tools fixing a crack in your garage floor is something you can do yourself. 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.

Before we get into specifics on how repair cracks in garage flooring let s go over a few examples of when you ll want to call in a professional for help instead of taking the diy route. Vacuum away all concrete debris. Using a diamond blade on your circular saw cut a 1 2 in deep groove along each side of the crack. Then i filled the deep cracks with cheap fine.

There is little point repairing the crack if the floor is going to open up again in a couple of months time. How do you fix garage floor cracks. This ensures that the surface of your garage floor is smooth again.