If you manage an apartment community and your parking lot is somewhere between ten and fifteen
years old, you have probably had two contractors give you two completely different recommendations.
One says “sealcoat.” The other says to resurface. The price difference between those two recommendations
is roughly an order of magnitude, and the property manager who picks wrong either spends too much
money too soon or commits to a preservation cycle on a lot that has already failed structurally.
The right answer is not opinion. It is a diagnostic. Resurfacing versus sealcoating is decided by the actual
condition of the asphalt and the actual condition of the base underneath, measured with established
tools, not by which contractor is sitting across the table. This piece walks through the diagnostic, the
decision matrix, the scope difference between mill-and-overlay and full repave, the resident-phasing
implications, and how to read a contractor proposal that is recommending resurfacing on a multifamily
property.
Resurfacing, defined plainly
Resurfacing is the family of services that replaces the top layer (or layers) of an asphalt parking lot
without rebuilding the base. There are three approaches inside the resurfacing family.
Asphalt Overlay
New asphalt is installed directly over the existing surface. The thickness is typically 1.5
to 2 inches. The existing surface is cleaned, patched, and tacked first. Overlays are the lightest touch.
resurfacing approach. They work when the existing surface is reasonably intact, and the issue is wear.
fading, surface cracking, and ride quality, not structural failure.
Mill and Overlay
A milling machine removes the top 1 to 2 inches of the existing asphalt. New asphalt is
installed at the same depth. The advantage over a straight overlay is that the lot’s elevation does not
change, which matters when there are curbs, drainage structures, garage door thresholds, and building
entrance grades to preserve. Most apartment parking lots resurface as mill-and-overlay rather than
straight overlay for this reason.
Full-Depth Reclamation or Full Reconstruction
The full asphalt section, sometimes including the base, is removed and rebuilt. This is the heaviest intervention and the highest-dollar event in the lot’s life cycle. It is appropriate when the failure is structural rather than surface.
The decision among these three is what the diagnostic is for. The decision between “any resurfacing”
and “continued sealcoating preservation” is the decision this piece is mostly about, because that is the
call most property managers face on a 10-to-15-year-old multifamily lot.
The Diagnostic (How to know which side of the line your lot is on)
Three diagnostic inputs together decide whether the lot is a resurfacing candidate or a continued preservation candidate. Pavement condition index (PCI). A numerical score from 0 to 100, based on a visual distress survey
scored against ASTM D6433 methodology. The Asphalt Institute and the Federal Highway Administration
both reference PCI as the industry-standard condition metric. Reading the PCI score:
- PCI 85 to 100: excellent. Continue routine preservation (crack seal, sealcoat).
- PCI 70 to 85: good. Continue preservation and accelerate crack seal cycle.
- PCI 55 to 70: fair. Resurfacing candidate. Mill-and-overlay or overlay.
- PCI 40 to 55: poor. Resurfacing is borderline. Likely full-depth reclamation.
- PCI below 40: very poor. Full reconstruction is the realistic call.
PCI alone is not enough. The number tells you the surface story. The base story comes from cores and
from drainage.
Cores
Drilled samples through the asphalt section into the base. Cores show the actual asphalt
thickness, the bond between layers, the base composition, and signs of moisture damage in the base. A
lot with PCI 60 and clean cores is a mill-and-overlay candidate. The same PCI 60 with cores showing
stripping (asphalt binder loss from moisture damage) is a full-depth candidate. The Asphalt Institute
publishes guidance on core interpretation that is the technical reference here.
Drainage Assessment
The lot’s water management. Where does water sit after a rain, and does it
sheet across drives? Where are the catch basins, and are they working? A lot of structural failures that are
downstream of a drainage problem will fail again after resurfacing because the cause is upstream.
Drainage correction must occur before or during resurfacing. The Institute of Real Estate
Management’s capital planning guidance treats water management as the first-order asset preservation
consideration.
A working diagnostic on an apartment property runs all three inputs. PCI score, cores in at least three
locations (entry apron, mid-lot, and any visibly distressed zone), and a drainage walk-through after the
next rain event. The output tells you which side of the line you are on and which scope to bid.
The Decision Matrix. (Sealcoat vs Overlay vs Mill-And-Overlay vs Reconstruct
| Condition Assessment | Recommended Rehabilitation Strategy |
| PCI 70+, base intact, drainage working | Continue preservation. Sealcoat plus crack seal. |
| PCI 55-70, base intact, drainage working | Asphalt overlay or mill-and-overlay |
| PCI 55-70, base intact, drainage issues localized | Mill-and-overlay plus targeted drainage correction |
| PCI 40-55, cores show stripping, drainage issues | Full-depth reclamation in failure zones, mill-and-overlay elsewhere |
| PCI below 40; cores show widespread stripping | Full reconstruction |
| Mixed PCI across the lot, some zones structurally failed | Partial reconstruction in failure zones, mill-and-overlay elsewhere |
The most common multifamily case (lot in year 12-15 of its lifecycle, original construction was decent,
preservation has been intermittent) lands on mill-and-overlay with targeted drainage correction. That is
the right call for the majority of apartment communities in this window. The borderline cases are where
contractor evaluation matters.
For the full mill-and-overlay vs full-depth reclamation decision (the bigger capital decision after PCI flags
structural failure), see our companion piece on the parking lot life cycle and our apartment parking lot
maintenance schedule.
What Mill-And-Overlay Actually Involves
If the diagnostic lands on mill-and-overlay, the scope of work has nine components. A bid that does not
Including all nine is leaving something for the property manager to discover mid-project.
Pre-Construction Survey and PCI Documentation
Document the existing condition for warranty and for
the next reserve study. Capture into a system the property manager can access post-project.
Milling
Remove the top 1 to 2 inches of existing asphalt. The standard mill depth for multifamily is 1.5
inches. Sweep the milled surface clean. Haul off the recycled asphalt pavement (RAP) for reuse.
Base Inspection and Spot Repair
With the surface course removed, the binder course (or base) is
exposed. Any failed zones (stripping, soft spots, depressions) get repaired before the new surface goes
down. This is the moment to catch base problems that the cores missed.
Drainage Correction
Catch basin replacement or repair, inlet repair, grading correction in identified
ponding zones. Drainage correction during a mill-and-overlay costs roughly 70 percent less than
drainage correction after the new surface is down. Bundle it.
Tack Coat
A bonding layer between the existing surface and the new asphalt. Application rate matters.
Too little tack and the new surface delaminates from the base. Too much tack and the surface bleeds.
The Federal Highway Administration’s tack coat guidance is the technical reference.
New Asphalt Placement
The new surface course is installed. Mix design, lift thickness, and compaction
density are all spec items the property manager should see in the bid scope. A 9.5 mm or 12.5 mm
Superpave mix is standard for multifamily.
Compaction
Steel-wheel rollers followed by rubber-tired rollers. Compaction density target is typically
92 to 96 percent of theoretical maximum density per Asphalt Institute specs. Under-compacted asphalt
fails early.
Cure Window
New asphalt needs 24 to 72 hours before vehicle traffic, depending on temperature and
traffic loading. Multifamily cure is longer than retail because residents come back to assigned spaces and
park hard on the cure window.
Striping Refresh
Stalls, ADA stalls, fire lanes, directional arrows. Striping has to wait for the asphalt to
cool and cure. Bundle the striping into the project window so residents return to a finished lot.
ADA Recompliance
Any change in stall configuration or stall count triggers an ADA review. A mill-and-overlay that changes the stall layout has to recomply. See our ADA compliance checklist for apartment
parking lots.
The Resident Phasing Question For Resurfacing
Sealcoat keeps a zone closed for 24 to 48 hours per zone. Mill-and-overlay keeps a zone closed for 3 to 7
working days per zone, depending on lot size, weather, and crew throughput. The phasing math is
different.
For an occupied apartment community with over 100 stalls, the working approach is to phase the resurfacing
into quarters at a minimum, with each quarter coming out of service for one workweek. A typical mill-and-overlay project on a 200-stall community runs three to four weeks of calendar time, end to end.
including weather contingency. That is meaningfully different from a sealcoat project that wraps in five
to seven calendar days.
Six operational moves carry the phasing.
Stack the resident notification
Mill-and-overlay disruption is larger and longer than sealcoat disruption. Increase
the notification cadence. Twenty-one days before kickoff, fourteen days before, seven days before,
three days before and on the morning of each phase. Email, plus paper at the door, plus community bulletin board, plus social channels. Reduce surprise to zero.
Coordinate move-ins and move-outs
Leasing should not commit a move-in to a building that is
downstream of a closed lot section during that resident’s move-in week. The resurfacing schedule
should be on the leasing office’s wall during scheduling.
Maintain emergency vehicle access through every phase
Fire lanes never close. The phasing plan should have the local fire marshal’s sign-off if there is any access ambiguity.
Maintain ADA continuity
Each phase needs a working ADA stall within the same path-of-travel radius
to the relevant building entrance. Temporary signage is acceptable; missing accessibility is not.
Plan trash and recycling routing for each phase
The truck has to reach every dumpster on its weekly schedule. Coordinate with the hauler before the project starts, not on day one.
Plan for weather
Asphalt placement requires sustained temperatures above 50 degrees Fahrenheit and
dry conditions. Rain in the cure window aborts the day. Cold-weather paving fails compaction targets.
The phasing plan needs a weather contingency that does not push the project past the resident
communication’s promised end date. Build slack into the schedule.
The operational detail across all paving services lives in our resident-first repaving playbook.
How To Read A Contractor Proposal That Recommends Resurfacing
The risk in a multifamily resurfacing bid is not over-priced asphalt. It is underscoped asphalt. Six red
flags should slow you down before signing.
The bid does not specify mill depth
A bid that says “mill and overlay” without specifying 1 inch or 1.5
inch or 2 inches is reserving the contractor’s right to mill whatever depth they show up with. Specify 1.5
inch minimum on most multifamily, 2 inch on lots that have already received an overlay.
The bid does not specify mix design
“Asphalt” is not a spec. The bid should name the mix (Superpave
9.5 mm or 12.5 mm, performance grade, gradation). Different mixes have different service lives.
The bid does not specify compaction density target
92 percent of the theoretical maximum density is
below industry standard. 94-96 percent is correct for parking lots. The bid should specify the target
and the inspection method.
No tack coat application rate is specified
Tack coat under-application is the leading cause of overlay
delamination. Specify the rate.
The bid does not mention base inspection between mill and lay-down
Skipping the inspection means
the contractor will lay new asphalt over base failures, and those failures will reflect through within two
years.
The bid does not include drainage correction
A lot that needed resurfacing usually needs at least minor attention.
drainage work. A bid with zero drainage scope is either a lot with truly perfect drainage (rare) or a
contractor planning to skip the work.
For broader contractor evaluation across all paving services, see our complete multifamily parking lot
paving guide.
When Resurfacing Is The Wrong Call
Three situations point away from resurfacing toward either continued preservation or full
reconstruction.
Base failure across more than 25 percent of the lot
Cores showing widespread stripping or saturation
mean the new surface course will fail from below within two to three years. Full-depth reclamation is
the right call. Resurfacing a structurally failed lot is the most common preventable mistake on a
multifamily property.
Lot is still in its preservation window
A PCI 75 lot with an intact base does not need resurfacing. It needs
continued sealcoat and crack seal. A contractor recommending mill-and-overlay on a lot in the
preservation window is selling work, not solving a problem. The diagnostic tells you which window the
lot is in.
Drainage failure is the upstream cause
A lot that is failing because water sits on it and undermines the
base will fail again after resurfacing. The drainage has to be corrected first or in parallel. A resurfacing
bid that does not address known drainage issues is a bid to repeat the failure.
How The Pavement Group Runs Resurfacing On Apartment Communities
We operate as a national commercial paving contractor with five owned branches (Wexford, PA
headquarters, Wisconsin, Westchester NY, Nashville TN, West Palm Beach FL, Charlotte NC) plus the
1TEAM National Contractor Network for markets outside those branches. On multifamily resurfacing
projects we bring:
- The full diagnostic (PCI, cores, drainage walk-through) before the bid scope is locked.
- A nine-component bid scope template (survey, mill, base inspection, drainage, tack, asphalt,
compaction, cure, stripe, ADA) that every multifamily resurfacing project gets. - A phased work plan with zone maps for every property over 100 stalls.
- A 21-day resident notification cadence and a kit for the leasing office.
- Condition data captured into Property Technologies on every property we touch, including the
pre-construction baseline that becomes the start of the new 20-year lifecycle. - A single project manager from kickoff to warranty.
The Pavement Group has been named Pavement Magazine Top Contractor for four consecutive years
(2021 through 2024). We work with multifamily property managers across owned branches and the
1TEAM network on resurfacing projects ranging from single-property mill-and-overlay through portfoliowide resurfacing programs.
Schedule Your Multifamily Resurfacing Diagnostic
If your apartment parking lot is in the 10-to-15-year window and you are weighing another sealcoat
against a resurfacing project, request your diagnostic at thepavementgroup.com/request-a-pavementassessment/. We will run the full diagnostic (PCI, cores, drainage walk-through), document the current
condition, recommend the right scope for your specific lot, and propose a phased work plan with a
resident communication kit if resurfacing is the right call. The diagnostic output is a decision document.
not a bid pitch
Frequently Asked Questions
How do we know if our apartment parking lot needs resurfacing or just another sealcoat?
Run the diagnostic. Pavement condition index (PCI) score, cores at three or more locations, and drainage
walk-through. PCI above 70 with intact base means continuing the sealcoat. PCI 55 to 70 with an intact base
means a resurfacing candidate. Below 55 with widespread base failure means full-depth reclamation or
reconstruction. A contractor who skips the diagnostic and recommends from the parking lot is guessing.
How long does mill-and-overlay last on an apartment parking lot?
A correctly-scoped, correctly-executed, and correctly-preserved mill-and-overlay on a multifamily lot
lasts 12 to 18 years before the next major intervention. That assumes proper preservation (crack seal).
(Every 3 years, sealcoat every 4 years). Skipping preservation cuts the lifespan by a third.
How long does a mill-and-overlay project take on an apartment community?
Three to four calendar weeks on a 200-stall community phased into quarters. Smaller lots wrap faster.
Larger lots take longer. Phasing into smaller zones extends the schedule but reduces resident disruption
per zone. Phasing into larger zones compresses the schedule but increases per-zone disruption. Most
apartment property managers prefer the longer schedule with smaller zones.
Can mill-and-overlay be done in winter?
Asphalt placement requires sustained temperatures above 50 degrees Fahrenheit and dry conditions.
Most US markets run resurfacing from late April through mid-October, with regional variation. Southern
markets stretch the season. Northern markets compress it. Scheduling a mill-and-overlay outside the
seasonal window risks compaction failures and accelerated wear.
Do we need new striping after mill-and-overlay?
Yes. The milled surface and the new asphalt do not retain the old stripes. Full new striping is part of the
scope. ADA stalls, fire lanes, directional arrows, stop bars, crosswalks, and curb paint. Bundle the striping
into the same project window and into the same bid.
Will mill-and-overlay change our parking lot’s elevation?
Mill-and-overlay typically does not change the lot’s elevation because the milled depth equals the new
asphalt depth. Straight overlay (without milling) does raise the elevation, which matters at curbs,
drainage inlets, garage door thresholds, and building entrance grades. Confirm the contractor is milling
at the same depth as the new lay-down, not just overlaying.
How disruptive is resurfacing to residents compared to sealcoating?
Roughly 4 to 6 times the per-zone closure window. Sealcoat closes a zone for 24 to 48 hours. Mill-and-overlay closes a zone for 3 to 7 working days. The disruption is real but manageable with proper
phasing, communication, and ADA continuity. Most properties run the project zone-by-zone over a three-
to four-week calendar time, so residents always have somewhere to park.
