What goes down
Failed floor repair
A coating that is peeling, bubbling or lifting in sheets failed for one of two reasons: the slab was never mechanically profiled, or moisture is driving up through the concrete. Neither is fixed by coating over the top. The failed system comes off entirely, the cause gets resolved, and the floor is rebuilt from bare slab.

What a failed floor looks like, and what replaces it
Same camera, same light. Only the floor changed.

Before — coating letting go

After — rebuilt from the slab
Where it fits
—Coatings peeling or lifting in sheets
—Bubbling, blistering or pinholing across a floor
—Hot tire pickup on a garage or shop floor
—Any floor a previous contractor will not come back to
Where it does not
—Cosmetic touch-ups — patching a failing floor buys months, not years
—Floors under active warranty with the original installer; call them first
—Spot repairs where the rest of the floor is on the same failure curve
Cost of ownership
What it costs to own, not what it costs to install
This is the most expensive way to get a floor, because you are paying for removal on top of installation. It is also the only honest way to fix a failed one. The alternative — recoating over a floor that is already letting go — costs less now and fails on the same schedule as the original.
Questions
What people ask about failed floor repair
Why is my epoxy floor peeling?
Almost always inadequate preparation or moisture. If the slab was not mechanically ground, the coating never bonded into the concrete and is held on by surface tension. If moisture vapour is rising through the slab, it pushes the coating off from underneath. Both require removal, not recoating.
Can you just coat over a failing epoxy floor?
You can, and it will fail again on roughly the same schedule. The new coating is only as sound as what it is stuck to, and it is stuck to a floor that is already letting go. Removal back to bare concrete is the only repair that changes the outcome.
How do you know whether moisture caused the failure?
A calcium chloride or relative humidity probe test measures how much moisture is moving through the slab. Visually, moisture failures tend to blister and lift in the middle of a floor rather than at edges and traffic lanes. The test is what settles it before any new material is bought.
Do you do cosmetic repairs to a damaged floor?
No. Repairs here are a full teardown and rebuild from the slab. A patched section of a failing floor does not match, does not last, and postpones the real fix while the rest of the floor continues to fail around it.
Ask about failed floor repair
If a contractor will not come back to a floor they installed, that tells you what the fix needs to be.