The Inspection Report Flagged Your Garage Floor: What It Means Before Closing
How cracks, pitting and a slab called deteriorated usually get worded, which one is worth putting in front of a specialist while the sale is live, and why a fresh coating is the wrong move inside that window.
When a home inspection report flags the garage floor, the word the inspector chose matters far less than one physical question: has the slab stopped moving as a single piece? Cracks, surface pitting and a floor summarized as deteriorated all turn up in the garage section of reports, and all three read alarming when you are days from a closing table. Two of them are ordinarily surface condition, the kind of thing a coating job handles as routine prep. One of them - a crack whose two sides no longer sit level with each other - is the finding worth putting in front of a specialist before anybody signs. This page is about telling them apart quickly.
On this page
What the report is actually saying
A home inspection captures visible condition on one particular day, in whatever light the garage had, with the cars pulled out. Vocabulary is not standardized across the trade, and two inspectors can describe the same slab in noticeably different language, so read the wording as a description rather than a ruling.
Here is the vocabulary you are most likely to be looking at, and what each phrase leaves open:
| Phrasing you may see | What it describes | What it leaves unanswered |
|---|---|---|
| Cracking noted at garage slab | One or more visible lines | Whether the crack is still active |
| Surface spalling, pitting or scaling | The top layer breaking apart | How deep the damage goes |
| Slab deteriorated | The inspector's overall impression | Any specific cause at all |
| Recommend evaluation by a qualified specialist | A handoff to someone else | That anything structural was found |
That last row is the one people misread under pressure. A recommendation for further evaluation is a handoff, not a diagnosis. It appears when an inspector sees something outside the scope of a visual walkthrough and declines to guess, which is the correct thing for them to do and not, by itself, evidence of a problem.
The crack: three checks you can do yourself
Pull both cars out, wait for a bright afternoon, and hold a flashlight low and almost flat against the concrete. Raking light like that throws shadow into a crack and shows its edges in a way an overhead bulb never will. Then run three checks.
- Width. A line you can barely work a fingernail into behaves differently from one a house key drops into. Fine lines are the common, boring kind.
- Level. Lay the flat of your hand across the crack and drag it slowly. If your fingertips catch on a lip, one half of the slab is sitting higher than the other. This is the check that matters most, and the one nobody does.
- History. Old listing photos, insurance photos, even a phone picture from a birthday party three years ago will show you whether the line has grown. Something that has looked identical for years is behaving very differently from something that opened up last spring.
Narrow, level and unchanged puts you in cosmetic territory, and the fix is the same prep any coating job includes anyway. A lip you can feel is the one that changes the conversation, because it means the ground under the slab is no longer supporting both sides equally - what engineers call settlement. Our fuller walkthrough of what a garage floor crack is telling you covers the causes behind each pattern.
The short version
Narrow, flat, unchanged: cosmetic, and it is prep work. Surface pitting: cosmetic, and it is prep work. A crack with a lip you can catch a fingernail on, or one that has visibly grown: stop, and get a structural opinion before you negotiate anything.
Pitting and scaling: the salt, not the structure
Pitting is the most common garage floor note in this county and the least alarming. Waukegan, North Chicago and Beach Park garages spend December through March collecting brine that drips off wheel wells onto bare concrete, and every warm-cold swing drives that salt water into the surface and expands it. What comes back out is the top skin of the slab, in flakes and shallow craters, concentrated exactly where the tires sit.
That damage is real, and it is worth fixing, but it is a resurfacing question rather than a foundation question. Our piece on why a garage floor pits after salt season explains the mechanism, and how a pitted or spalled floor gets repaired covers what the repair involves. On a sale, the useful thing to know is that the same grinding and patching a coating job does as standard prep is the repair, so the two are not separate line items.
The word that earns a second read
Deteriorated is a summary, not a mechanism. It can sit above a photograph of a badly scaled surface, or above a single long crack, or above a slab that simply looks old and dark. On its own it tells a buyer to worry and tells a contractor nothing.
So go backwards through the report. Find the observation and the photograph the adjective was built on, and read the location description carefully - a note about the slab near the overhead door means something different from a note about the slab against the shared wall with the house. If there genuinely is nothing under the word, that is a question for the inspector, not for a contractor. It is their document, they generally expect follow-up questions about it, and asking costs nothing.