Last Updated on October 20, 2026 by Umar Farooq
A paver patio inspection checklist comes down to six checks: lippage, rocking, joint sand, edges, drainage and surface condition. It takes about twenty minutes with a straightedge, a screwdriver and a garden hose. Do it once when the installer hands the patio over, and again each spring and fall, because small movement is cheap to fix and large movement is not.
The three checklists I read mostly list what to look at ("inspect for sinking or lifted pavers") without saying how far off is too far. This one gives the numbers where a source has them, and says so where none does.
Bring a straightedge, a screwdriver and a hose
You do not need to buy anything. A long level or a straight board, a tape measure, a flat screwdriver, a string line, a hose and a phone for photos cover it. My rule on tools is the usual one: use what is in the garage before you buy what is in the aisle.
There are two inspections, and they judge different things:
- Handover inspection. A new patio, before the final payment. You are checking the work against the spec.
- Routine inspection. An existing patio, each spring and fall, and after a storm or hard freeze. You are looking for movement.
CMHA's seasonal guide recommends the same rhythm: an inspection in spring and a final one in fall (CMHA, Hardscaping for All Seasons).
Paver patio inspection checklist for a new patio: measure what it must pass
For a handover, these are the numbers the industry documents give, and each one can be checked with the tools above:
- Lippage. Neighboring pavers on a walking route should not differ by more than 1/8 in (ICPI Tech Spec 2). Lay the straightedge across them and slide a coin or a drill bit underneath.
- Height after compaction. Pavers are set 1/8 to 1/4 in above final grade before compaction to allow for settlement (CMHA PAV-GSP-011-21), so a finished patio should be flush, not proud and not sunk.
- Slope. At least 1.5% (ICPI Tech Spec 2), and at least 2% within 10 ft of the foundation, which is about 1/4 in per foot (IRC R401.3 model text, so check your local code). The 3/16 in per foot I give for 1.5% in the diagram is my own arithmetic.
- Joints. Full, with no gaps wider than the rest and no pavers touching.
- Edges. Something solid holding every open edge: a restraint spiked into the base, a curb or a wall.
- Leftovers. The guide spec asks that extra pavers for repairs come from the same production run as the installed ones. Ask where yours are.
Photograph everything on the day. Pavers should come with paperwork too, and paver warranty explains what a workmanship warranty tends to cover.
Rock it, probe it, sight along it
Movement is what the routine inspection is after, and three simple tests find it. They are borrowed from an installer's repair guide, which uses a rock test, a screwdriver probe and a string line (Mr. Suds).
- Rock test. Walk the patio slowly and step on each paver near its edge. Any paver that rocks or clicks has lost its bedding.
- Probe. Push the screwdriver into a few joints. If it goes in far deeper than the others, sand has washed out below.
- Sight and string. Crouch at one corner and sight along the surface, or pull a string line across. Dips and humps that you cannot see standing up show clearly from ground level. Watch the outer row for creep, which means the edge restraint is giving way.
Sunken spots and rocking pavers have causes and fixes of their own, covered in pavers settling after installation.
Read the joints and the surface
Joint sand is structural, not decorative, so check it first.
- Depth. CMHA's seasonal guide says to refill when joint sand sits more than 1/2 in below the paver edge. If the sand is polymeric, follow the bag. Alliance Gator's SuperSand G2 data sheet, for example, wants the finished sand at least 1/8 in below the paver top.
- Weeds and ants. Both start in joints that are low or full of debris.
- White haze. Pale powder is usually efflorescence, which is a surface deposit, not damage.
- Cracks and chips. A cracked paver with little to no opening generally does not affect performance, according to CMHA's maintenance note, but one that has moved should be replaced. Details in replace a broken paver.
- Sealer. If you sealed, sprinkle water on the surface. If it beads, the sealer is still working. If it soaks in, it is worn. Do not reseal on a calendar.
Look at the edges and the ground beside them
The outer row tells you first when the field is spreading. Check that every open edge still has something solid holding it, and that the restraint has not lifted or leaned. CMHA's list of spring checks includes loose edge restraints for this reason, and its call-a-pro list includes restraints that need extensive repair. Plow blades and mower wheels are the usual culprits. Mr. Suds describes plow damage tearing out restraint and dragging pavers out of alignment.
Push on the outer row with your foot. If it moves outward, or a gap has opened between the paver and the restraint, re-spike or replace the restraint before you refill any joints. Refilling joints around a spreading edge just gives it more room to spread.
Check where the water goes
Most of the damage a routine inspection finds is water damage that started months earlier. Hose the patio for a few minutes and watch.
- Puddles that stay after the hose stops mark a low spot.
- Water should run away from the house. IRC R401.3 wants a fall of at least 6 in within the first 10 ft of ground next to a foundation.
- Look at where the downspouts end and whether soil is washing out of the edges.
A slow drain is easier to fix than a flooded patio. Patio drainage has the options, starting with the cheap ones.
Decide: fix now, watch it, or call someone
Use this to turn findings into action.
| Finding | Action |
|---|---|
| Joint sand low, no movement | Refill this weekend |
| One rocking paver | Lift, fix the sand under it, relay |
| Edge pavers creeping, restraint loose | Re-spike or replace the restraint, then re-sand |
| Settling over 1/2 in, joints widening, several pavers out of line | Call a professional (CMHA's list) |
| Pooling that returns every rain | Fix the drainage before the pavers |
| Cracks, white haze, light stains | Watch and clean; not structural |
Twenty minutes, twice a year
A patio that passes these six checks is fine until the next season. Keep the photos, note any numbers you measured, and compare them next spring. The point is not to find problems, it is to find them while the repair is a screwdriver and a bag of sand instead of a lift-and-reset. If you want the full set of seasonal jobs behind it, spring paver maintenance takes over from here.
FAQ
How often should I inspect a paver patio?
Twice a year, in spring and fall, plus after a storm, a hard freeze or heavy plowing. CMHA's seasonal guide lists both inspections.
What is acceptable lippage between pavers?
ICPI Tech Spec 2 says no more than 1/8 in between neighboring pavers on pedestrian routes. A bigger step is a trip hazard and a reason to reset those pavers.
Do I need a professional inspection?
Not for routine checks. CMHA's guide suggests calling a professional if pavers have settled more than 1/2 in, joint widths are widening, several pavers are out of line or the edge restraints need extensive repair.
What should I check on a new paver patio before paying?
Lippage, slope, joint fill, edge restraint and flatness with a straightedge, and whether extra pavers from the same run were left for repairs. Photograph the patio on the day.
