Tenant Unit Curbs
Each tenant often has its own rooftop unit, so a mid-size roof can hold a dozen curbs. Cracked base flashing at any of them puts water in the ceiling plenum.
Commercial roof repair in Oro Valley for business-park, office, and medical buildings, where one roof covers several tenants and every rooftop unit matters.


Business parks along Oracle Road and the town's office and medical buildings often put several tenants under one membrane. A leak over one suite can start at a curb above the suite next door.
We trace each leak across suite lines, repair it at the source, and give the property manager one report showing which tenant space each repair sits over.
Office and medical roofs carry a lot of equipment for their size. These six details cause most of the leaks.
Each tenant often has its own rooftop unit, so a mid-size roof can hold a dozen curbs. Cracked base flashing at any of them puts water in the ceiling plenum.
Medical and office suites add exhaust fans and vent stacks. Split boots and loose storm collars around them are frequent sources of small, steady drips.
Buildings expanded over the years have seams where newer membrane meets older roof. Those transitions dry out and open first.
Stucco parapets crack at corners and control joints. Water gets behind the wall flashing and stains the wall inside a suite.
Through-wall scuppers drain many of these roofs. When the collar cracks or the scupper clogs, water backs up and finds the wall.
Open ceiling plenums let water run along ducts and conduit before it drips, so the stain can sit in the next suite over from the leak.
One repair done at the source settles questions for the owner, the manager, and every tenant under the roof.
Three services cover most business-park and office roofs in Oro Valley.

Shared single-ply and modified roofs over several suites get seam, curb, and scupper repairs with membrane that matches.
Flat roof repair for Oro Valley
Leaks that show up in one suite and start above another get traced across suite lines to the real entry point.
Commercial roof leak repair for Oro Valley
Flex buildings with metal panel roofs get fastener, lap, and skylight repairs matched to the existing profile.
Commercial metal roof repair for Oro Valley
Call with the building address and the suite where the stain shows up. We check the curbs and vents above both suites.
Work above occupied suites follows four steps, set up with the property manager first.


We walk the roof with the suite map in hand, check every tenant curb, vent, scupper, and seam, and match each interior stain to the roof above it.
Rooftop unit shutdowns and noisier work are booked with the property manager around clinic hours and tenant schedules.
Curb flashing, boots, seams, and scupper collars are rebuilt with material matching the membrane, then the ceiling below is ready for new tiles.
Roof photos and notes are organized by suite, so the manager can answer each tenant about what was repaired over their space.
Neighboring communities we also cover, each with its own roof types.
North on Oracle Road, where small one-story buildings often have a single roof hatch.
South on Oracle Road, with retail centers packed with rooftop units.
Southeast below the mountains, where runoff and debris reach roof drains from higher ground.
West toward I-10, with long distribution roofs and drains spread far apart.
The Town of Oro Valley issues building permits for addresses inside town limits. Ask the town about thresholds before repair work touches the deck, drains, or rooftop equipment supports, since those items are the most likely to need review.
Yes, with planning. Quiet work like seam and boot repairs runs during the day, while rooftop unit shutdowns, roof cuts, and heat-welding near air intakes are booked for hours the clinic chooses.
That comes down to the leases, which we leave to the owner and tenants. What we provide is a roof repair report organized by suite, showing where each leak entered and which space it sat over.
Open ceiling plenums let water run along ducts, conduit, and the deck before it drips. A leak at a curb above one suite can stain a tile in the next suite over.
We repair the roof around them: curbs, base flashing, vents, and condensate lines that drain onto the membrane. Your mechanical contractor handles the unit itself, and we coordinate shutdowns with them.
Twice a year, once before monsoon season and once after it. Business-park roofs with many tenant units also benefit from a check after any rooftop unit replacement, since new curbs are a common leak source.
Mounts and conduit that pass through the membrane are flashed like any penetration. We repair the roof around the equipment and coordinate with the owner of the array or antenna before anything is moved.
Removing the cracked base flashing, drying and cleaning the curb, and installing new flashing up the curb sides with a sealed termination under the unit's rail. Corners get preformed pieces, since that is where the old flashing failed.
Request a free estimate or call with the building address and the suites reporting leaks. We will inspect the roof and report by suite.
Leave a name and number and we will call to talk through the leak or repair.
Or call now: (623) 310-0116