Sweep away any loose debris then vacuum the crack.
Repairing large cracks in concrete garage floor.
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.
New homes cracks that occur in the first few months or years.
With a cold chisel and large hammer undercut the edges of the crack.
Chip out the cracked portion with a maul and cold chisel.
Epoxyshield has a good reputation and is easy to use.
Wear an n 95 respirator and turn on a fan to blow the concrete dust out of the garage.
This is a two part kit consisting of epoxy and sand.
If grease oil or dirt remains in or near the crack clean it thoroughly.
Concrete cracks are caused by sideways expansion poor drainage conditions or settling soil beneath the concrete.
A 20 foot square of freshly poured concrete will shrink about a 1 8 of an inch in each direction.
Epoxy is a common way to fill in larger cracks and so is a polymerized concrete mix.
With a wire brush clean the crack.
One of the best garage floor crack repair epoxy kits is rust oleum s epoxyshield concrete patch repair.