Commercial · Repair
Commercial roof repair that starts with the water path
Commercial roof repair is leak diagnosis and targeted correction for low-slope and steep-slope commercial systems: TPO, EPDM, modified bitumen, built-up, metal, and coated roofs. It is for facility teams dealing with leaks, membrane damage, flashing failures, or drainage problems who need the water path found, the risk ranked, and a straight read on whether repair is still the right spend.
Where to look
Where commercial roofs leak
The stain in the ceiling tile is the end of the story. These are the places it usually starts.
Seams and laps
On single-ply and multi-ply roofs, the field is rarely the problem; the joints are. Seam probing and close inspection find the failures the eye walks past.Flashings at curbs and walls
Where the roof turns vertical (curbs, parapets, equipment supports) is where movement, UV, and shortcuts concentrate. The majority of chronic leaks live here.Drains and scuppers
A blocked drain turns a roof into a pool, and ponding finds every weakness. Drainage condition is checked on every diagnosis, not just where the leak presented.Penetrations
Pipes, conduits, vents, and abandoned equipment stubs: every hole in the membrane is a maintenance item somebody has to own.Rooftop traffic damage
HVAC techs, satellite installers, dropped tools. Roofs with equipment get walked, and membranes remember every visit.Edge metal and terminations
Where the membrane ends, the wind starts working. Loose terminations and edge metal are both a leak source and a storm vulnerability.
The process
How diagnosis runs
A commercial leak that gets patched where it shows comes back somewhere else. Diagnosis works the assembly, then the repair gets mapped, and only then priced.
History and interview
When it leaks, where it shows, what the weather was doing, and what has been tried. Leak history is diagnostic data, and your maintenance staff usually holds most of it.
Surface and detail inspection
The membrane, seams, flashings, penetrations, and drainage are walked and documented with location-tied photos.
You receive: A documented picture of the roof area in question.
Assembly and moisture check
Water travels between layers on a commercial roof. The assembly is evaluated for trapped moisture, and where the pattern warrants it, formal moisture survey options are laid out before you commit to one.
Repair map and prioritized findings
Findings are ranked by consequence: what is letting water in now, what will shortly, and what can be scheduled. You decide with the map in front of you.
You receive: A repair map with priorities, not an all-or-nothing quote.
Repair and documentation
Approved repairs are executed and photographed, before and after, with materials compatible with the existing system.
You receive: Before-and-after photo documentation for the property file.
Decision guidance
When repeat repairs become the expensive option
Repair is the right call more often than roofers admit, and the wrong call more often than owners notice. The difference is in the pattern.
Repair keeps paying when
- Leaks trace to specific details: a flashing, a seam, a penetration.
- The insulation under the repair area is dry.
- The membrane still has real service life around the repairs.
- The repair pattern is occasional, not quarterly.
Stop and reassess when
- New leaks keep appearing in new places: the system is failing, not a spot.
- Insulation is wet across a growing area; every repair seals more water in.
- Repair spending is becoming a budget line with no end date.
- Seams or surfacing are failing systemically across the field.
When the second column describes your roof, the money conversation changes: a maintenance program disciplines the spending if the roof qualifies, and the commercial replacement program covers the capital path when it doesn’t. The assessment tells you which conversation you are in.
Emergency
Active leak or storm opening?
Safety first: keep people away from sagging ceilings and from water near anything electrical, and stay off the roof. Once everyone is clear, call and describe what you can see from inside and from the ground.
FAQ
Commercial repair questions
Our roof is under a manufacturer's warranty. Can you touch it?
Warranty status is the first thing to establish, because manufacturer warranties commonly restrict who may perform work and how. We identify the warranty situation before recommending a repair path, so a fix on Tuesday doesn’t void coverage the roof needed on Friday.
Why does the leak keep moving?
Because water on a commercial roof travels between layers (along the membrane, the insulation, the vapor barrier, the deck flutes) and exits wherever gravity finds an opening. A moving leak almost always means the entry point was never found, which is why diagnosis here starts with the water path, not the ceiling tile.
Do we need a moisture survey?
Not always, and you should be skeptical of anyone who sells one reflexively. When the leak pattern or the repair-versus-replace question turns on how much insulation is wet, a survey pays for itself; when the problem traces to one detail, it’s overhead. We lay out the options and what each one would answer.
If it only needs a small patch, is that what you'll do?
Yes. The repair map exists precisely so small problems get small fixes. Ranked findings mean you can authorize the urgent item today and schedule the rest. No bundling, no inflation of scope to make the trip worthwhile.
What lands in our property file afterward?
The documented findings, the repair map, and before-and-after photos of the completed work. Commercial roofs outlive facility staff tenure; the file is what keeps the roof’s history from walking out the door.
Start with the building
Find the water path before it finds the inventory
Request an assessment and get the leak diagnosed at the assembly level, or call and describe what the building is doing.