An unevenconcretegarage floor or one with depressions can be a concern, especially if it’s an attached garage.
Or certain areas of the garage floor may dip or bow ordisplay cracks.
Identify the low areas with light pencil marks.
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Few concrete slabs are completely flat.
Dips and depressions less than 1/4-inch deep are usually not troublesome enough to warrant repair.
Also, grind down any areas with stubborn stains.
Use the shop vac to remove all traces of grinding dust.
Concrete patch is available both in premixed tubs and in caulk-gun tubes for utility.
Use a pointed trowel to force the patch material down into the crack to completely fill gaps.
Allow the patching cement to fully dry and cure before proceeding.
For most products, this requires about 24 hours.
This should be done only where the leveling cement label directs you to do so.
The mixture should be a thick but pourable slurry.
If so directed, add a latex or epoxy bonding liquid as you mix the leveling cement.
Allow at least 24 hours if you plant to seal or paint the slab.
The foam product is far lighter than mud, too.
About 3 to 4 pounds of polyurethane is equal to 100 to 150 pounds of slurry.
How to Fix Low Spots on a Garage Floor.
AAA Concrete Raising Company.