How can we effectively repair the crack in our garage floor?
Asked by Martha Sims 
2 months ago
Last Updated: October 27, 2024
What’s the best way to take care of that crack in our garage floor?
Next up, we also have significant cracks but fortunately no problems with the foundation
Notes that the garage cement is poured separately from the foundation, but fortunately it can be easily re-cemented.
Fills in with mud
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Seems like they forgot to include expansion joints. Without them, the same issue will likely occur again. I suggest using garage epoxy paint with sand for the floors. When applied correctly, it will look good and be long-lasting. You can try filling it, but it may just crack in a different spot.
Fill the Expansion joint with Epoxy finish
I’m not a pro but I assisted a buddy who worked with stone… Just widen the fissure and apply hydraulic cement to seal it! It’s a bit of effort and cost but it’s a lasting solution
Concrete or mortar patch from Home Depot
Caulking. Haha
That crack looks pretty wide, so it might reopen. You could attempt to seal it with hydraulic cement, available at Lowe’s or Home Depot, for the best results.
Jackhammer…sounds like fun!
Why not cover it up with a car?
I’d recommend sawing a cut down the center to create an expansion joint… it’s been in place for a while, so it’s likely stable. Any fancy solutions mentioned are only superficial and don’t address the underlying issue.
The new garage is completely wrecked
Your thinking is pretty cool 😂👆
Rhino straps. Might be a bit pricey but gets the job done. I’ve used it a few times in the past.
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I’m not an expert, but I’ve been learning a lot over the past month and a half. Make sure to check the perimeter of your garage on the inside to see if your flooring is separating from the wall. This could be an indication of foundation issues like bowing walls, a failing sump pump, or a sinking foundation. In our case, we have over an inch of separation between the garage flooring and the wall, as well as bowing walls in the basement and a malfunctioning sump pump!
There’s not much you can do to fix that. You could try filling it with Thinset or hydraulic cement.
I applied a sticky fruity concrete floor patch on mine using a putty knife, then smoothed it with a rubbing stone after it dried. Finally, I epoxied the floor. You can hardly notice the difference now.
Your best option is using a filler. It won’t fully fix the issue, but it will improve the appearance.
The real question is whether you aim to fix it or simply cover up the crack.
Conceals the crack
Is right!
Cost to fix = $20,000 to $50,000
Cost to conceal = $20 – $2,000
Duct tape really does solve everything
If you just want to improve the appearance, consider buying self-leveling material and heavy-duty painters tape. Sweep the floor, vacuum the crack, apply tape on both sides of the crack, then pour the self-leveling product into the crack. In case of spills (over the tape), have some rags handy to wipe it up. Allow it to dry for a few days. Remove the tape. Use an orbital sander to smoothen the area.
Have a great day!🎉
Purchase some Sika crack filler. Remove any debris, then fill the crack. You may need some foam backer rod if the crack is particularly wide or deep.
For instance, consider using a flexible sealant designed specifically for concrete like this one: https://www.homedepot.ca/product/sikaflex–sikaflex-crack-flex-sealant-300-ml-high-performance-sealant-for-horizontal-concrete-cracks/1001104920
I would pay closer attention to the cause of the issue. Any signs of stress on the concrete? Are the sidewalls expanding?
Simply follow it with a diamond blade and caulk it or decide to leave it as is. It’s just a crack. A control joint should have been cut, but we have to work with what we have.