
Commercial Roof Leak Repair
Tracing runs from the stained suite uphill along the deck, with water tests at each suspect curb and lap.
Commercial roof leak tracingWe trace and repair leaks on Fort Mohave strip retail buildings, where one commercial roof covers several suites and a stain often starts at a curb bays away.


Strip retail roofs run long and flat over several suites. Water that slips in at one curb or seam can follow deck flutes and insulation joints and drip into a different tenant's space.
Before any membrane is cut, we confirm whether the parcel falls under Mohave County Development Services or the Fort Mojave Building Department, since some Fort Mohave parcels sit on reservation land.
These details most often send water into a neighboring suite. The dashed line shows how far water can run before it drips.
Each suite usually has its own rooftop unit. A dried sealant joint at one curb can wet the ceiling of the suite next door.
Deck slope carries water toward drains, often across demising walls, so the stain shows up downhill of the real entry.
Long runs of membrane meet at laps across the roof. An open lap midway down the building feeds water to whichever suite sits below the low point.
Several suites drain to the same few drains. A packed strainer backs water up around every curb and seam nearby.
Back walls along service alleys carry wall flashing that shrinks and peels, putting water behind stockroom ceilings.
Finding the true entry point settles which detail failed, so one repair fixes the leak for every suite it reached.

When the stain sits two bays from the source, a patch over the wet ceiling misses. Repairing the actual curb or lap dries out every suite downslope of it.
Stopping water at the entry point early keeps it from crossing more demising walls and soaking ceiling tile in more suites.
Confirming county or tribal jurisdiction up front keeps the repair from stalling once the roof is opened.
Dated photos of each stain and the matching roof detail make it plain which repair served which tenant space.
Two services handle most leaks on Fort Mohave retail roofs.

Tracing runs from the stained suite uphill along the deck, with water tests at each suspect curb and lap.
Commercial roof leak tracing
Once the entry is found, the curb flashing or lap seam is rebuilt with membrane that matches the strip roof.
Flat roof repair for curbs and lapsCall and tell us which suite shows water and which units sit on the roof above it. Tracing starts uphill from the stain.
Five steps from the stained suite to the repaired detail.
We start above the stained suite, then walk uphill along the deck slope, checking each tenant's curbs, the laps between bays, and the shared drains.

Stains in adjoining suites are compared by date and size, which narrows the entry point to the curb or lap that wets them all.
Parcels in Fort Mohave fall under Mohave County or, on reservation land, the Fort Mojave Building Department. The office is confirmed before any membrane is opened.
Each suspect curb or lap is flooded with a hose while someone watches the ceiling below, one detail at a time, so the right detail gets repaired.

The confirmed detail is rebuilt and water-tested again, and the suites below are checked after the next heavy rain.
We also repair commercial roofs in these nearby communities.
Logged stopgaps on leaking roofs inside city limits, then permanent repairs under a city permit.
Panel, fastener, and rust work on steel roofs farther along SR 95.
Sun-worn flat roof membrane with open laps and dried curb sealant.
Peeled membrane and lifted wall flashing on roofs after strong wind.
Because water travels along the roof deck before it drips. It slips in at a seam or flashing, then runs along deck flutes, insulation joints, or a purlin until it finds a gap. On a long strip roof, a stain in one suite can start at a curb above another.
Yes. Water can run along the deck under a demising wall and drip in more than one place. Stains that appear after the same storm in neighboring suites often share one entry point, which a water test confirms.
Rarely. Most work happens on the roof, and interior access is needed only to watch for drips during a water test or to replace stained tiles. Suites under an opened section of deck get advance notice and a covered work area.
Yes. Tracing happens on the roof, and a water test needs someone inside one suite at a time to watch the ceiling. Most tenants see a short visit to check a stain and little else while the stores keep trading.
Most go through Mohave County Development Services, but some parcels sit on Fort Mojave Indian Reservation land, where the Tribe's building department issues permits. Community names do not mark that line, so the parcel is checked before work starts.
With a controlled water test. One detail at a time is flooded with a hose for a set period while someone watches the ceiling below. Testing curbs and laps separately shows which one is feeding the stain.
Dates and locations of every stain, which tenant reported it, and any rooftop unit service in between. That log lines up with the roof's condition and makes the next leak faster to trace.
Often, if the leaks stay at curbs, laps, and drains. Strip roofs with dry insulation between those details respond well to targeted repairs. Wet insulation spread across several bays points toward replacing those sections.
Tell us which suites show water and when. We follow the deck uphill to the detail that failed.
Leave a name and number and we will call about the leak or repair. Or call now: +1 (928) 436-4825.