How to Fix Cracks in a Garage Floor in 5 Simple Steps (with Pictures)

In most cases, correcting a crack in your garage ground is a easy, Diy venture. The most typical materials to use for the repair is epoxy—most likely a mortar epoxy. There are numerous kits on the market place, every with its possess distinct application directions. However, all the kits will have the very same 5 basic steps to fixing the crack.

Tools And Supplies

Just before you start, here is a checklist of instruments and provides to make positive you have:

Safety:  Safety glasses, work gloves, earplugs
Tools: Cold chisel or mortar chisel, hammer or mallet, shop vac
Materials: Crack repair kit

How to Fix Cracks in a Garage Floor (5 Steps)

1. Confirm the Crack is Not Structural

As a creating settles, it is not unusual for concrete to crack. At times it is a small crack, but other times it can be lengthy and extensive. Just simply because a crack is big does not immediately mean that it is structural.

If a crack seems like it may be structural, it’s worth investigating outdoors to see if there has been a considerable change in the soil or basis. If you’re not confident, then contacting a skilled for a second viewpoint is not a negative notion.

After you affirm that the crack is not structural, then it’s time to get your tools out and move on to step two.

2. Ensure There Are No Loose Edges

If you ended up to leap straight to filling the crack with epoxy with no cleaning the edges of the crack, then the ideal-case state of affairs would be the fix keeping for a quick time only. So, really do not skimp on this step if you want a long-long lasting fix.

There are a number of methods to do this, but one of the least difficult approaches is with a hammer and cold chisel or mortar chisel. Begin at one stop of the crack and chisel the two sides together its size. Make sure to chisel the edge again till it doesn’t chip off very easily. This will avoid a free piece of concrete from weakening your seal.

  • NOTE: You’ll want to make sure you wear eye and ear protection and gloves for this step.

3. Clean out the Crack

Although chiseling the crack, you might have gotten some big chunks from the edge eliminate these by hand. Then do a move with your store vac to clean out all the relaxation of the particles. Just like it was crucial to get the loose edges off, cleaning all the debris out is also important.

Some crack fix kits might even immediate you to thoroughly clean the crack out with water to guarantee no dust or debris stays.

4. Fill the Crack

As soon as you’ve adopted all your kit’s directions to put together for epoxy or mortar, then it’s time to combine your filler. If you’re utilizing a two-component epoxy filler—which is common—then when you mix it, the timer commences. You will have a minimal time to get it in the crack before it starts off to established.

To prevent any oopsie conditions, go through the entire established of instructions ahead of mixing your epoxy. That way, you can ensure you have all the information sorted out in advance of time.

How to Fix Cracks in a Garage Floor in 5 Simple Steps (with Pictures)
Image Credit: TS Photographer, Shutterstock

5. Allow the Epoxy to Cure, Reapply if Necessary

Depending on the particular epoxy or mortar you use for the crack fix, the time it normally takes to dry and cure can range from 24 hrs to a week. If you need to incorporate much more filler to any reduced places, this can frequently be done following six to eight hrs.

Following correcting the crack in your garage ground, this may possibly be the ideal time to reseal or paint the whole flooring. There are numerous possibilities on the market for epoxy coatings or flooring paint. Based on what kind of use your garage flooring will get will figure out the alternatives for your circumstance.

Why Do Concrete Floors Crack?

Concrete can crack for several motives, these kinds of as an inappropriate blend of ingredients when mixed and poured or the mistaken type of concrete utilised for the task. Also, normal floor motion will lead to cracks in just about any slab above time.

A single way to prevent cracks is by creating handle cuts in the slab after it is poured. This is not some thing the common property owner will want to deal with, but it can be done at any time by a professional. Basically, they make strategic, shallow cuts in the slab with a unique blade. What this does is give the slab a controlled spot to crack. This generally minimizes the hurt of the crack and often tends to make it significantly less noticeable also.

When to Call a Pro

If a crack is broader than an ⅛ inch or if 1 side of the crack has dropped or pushed up substantially increased than the other, then the crack might be structural. A structural crack in by itself is not generally something to worry about. Nevertheless, if you fix it, it’s likely heading to crack once more following you’ve set it.

In a situation like this, it is a very good idea to get a skilled to have a seem. They might have a advice on the greatest way to fix the crack. If you totally should have the crack fastened, it may be feasible to get out a portion of the flooring to repair the problem and pour concrete once again. These types of fixes can get really high-priced, even though.


At first glance, the imagined of correcting one thing sound like a concrete ground may possibly appear complicated. But hopefully, we have demonstrated with this stage-by-step manual that a homeowner with a realistic volume of Diy expertise ought to be ready to deal with most fixes. Keep in mind that possessing a skilled at the very least appear at the harm prior to you tackle it may possibly help save you time and money in the lengthy run.

Showcased Image Credit rating: Kitti16, Shutterstock