


Go at the area with a wire brush and vacuum again until you are certain you’ve removed the crumbly concrete. Laitance will not provide a stable surface for the repair to attach to and will possibly cause your repair to fail. This is called “laitance.” It is a weak area in the original pour and must be removed. You should look for and remove any easily crumbled or sandy concrete. Next, clean out the crack with a vacuum cleaner and a wire brush. Should I Paint my Garage Floor? Laitance in concrete The first step in any crack repair is to open and clean out the crack using a cold chisel. Concrete contracts in cold temperatures, and expands in warm temperatures. They are simply stress fractures caused by the contraction and expansion of the floor. This will help you determine what type of product you want to use and how much you stuff you need to repair it. First, you want to get a sense of the crack’s length, width and depth.
Garage floor slab crack repair professional#
If you see any of that, you should get a professional concrete contractor to check the problem.Īs long as it’s not a structural crack, you can fix it yourself. one side of the crack is higher than the other.Look for these symptoms of a larger problem: When Should a Professional Fix a Garage Floor Crack This uneven crack indicates structural and water damage under the surface.Ī minority of cracks are signs of structural or deeper damage. Go ahead and fix cosmetic cracks yourself.įind links to the products mentioned in these articles on this site: Fill large cracks with Epoxy Patching System.īefore you get started though, diagnose whether the crack is indicative of a structural problem that requires professional help to fix.
Garage floor slab crack repair Patch#
Fill medium cracks with EpoxyShield Patch & Repair. Prepare a larger crack using an angle grinder with a crack chasing wheel.

So long as they’re cosmetic, concrete cracks are pretty simple to fix.Ĭlean small cracks with a wire brush, a hammer and a cold chisel. Concrete cracks are one of the most common garage floor problems. They run from a hairline to a few inches wide. Concrete cracks are splits in the floor surface.
