Commercial Roofing Services
Commercial Roof Repair in Winston-Salem
Tracing and Repairing Commercial Roof Leaks in Winston-Salem
The scope documents leak sources, repair boundaries, photos, and priorities so Winston-Salem owners can separate immediate stabilization from longer-term capital work. A leak inside the building rarely shows up directly under the point where water is entering the roof. Water travels along deck seams, follows insulation joints, and drips off structural members before it ever reaches a ceiling tile. Our leak repair process starts with tracing, not patching, because a repair applied at the interior stain location often misses the actual entry point entirely, especially on the low-slope membrane roofs that cover most of this market's medical offices, manufacturing plants, and distribution buildings.
Diagnostic Process Before Any Repair Work
We walk the roof systematically, checking penetrations first, HVAC curbs, pipe boots, roof drains, and any spot where trades have accessed the roof for equipment work. Rooftop units installed by a mechanical contractor without roofing-specific flashing details are one of the most common leak sources we find on institutional buildings around the Wake Forest Baptist medical campus and the Innovation Quarter research buildings, where equipment gets added or swapped over a building's life without always looping in a roofer for the curb detail.
Where the entry point isn't visible from a surface walk, we use a moisture meter or infrared scan to map wet insulation beneath the membrane. This tells us the extent of water intrusion in addition to its origin point, which matters for deciding whether the repair is a localized patch or signals a larger area needing insulation replacement.
- Interior water stain location mapped against roof plan to estimate search area
- All rooftop penetrations and curb flashings inspected first
- Membrane seams and terminations checked for adhesive or weld failure
- Moisture scan run where entry point isn't visible from the surface
- Wet insulation extent documented before repair scope is finalized
- Repair method matched to existing membrane type and manufacturer spec
Repair Methods by Membrane Type
A TPO seam failure gets repaired with a hot-air weld matched to the existing membrane thickness, not a caulk-and-hope patch. EPDM repairs use the manufacturer's specified seam tape and primer system, since EPDM doesn't heat-weld the way single-ply thermoplastics do. Modified bitumen and built-up roofs, common on some of the older manufacturing and furniture-industry buildings around Thomasville and High Point, get repaired with a torch or cold-applied patch matched to the existing ply system. Using the wrong repair method on the wrong membrane is one of the fastest ways to void a manufacturer warranty, so we confirm membrane type and manufacturer before repair work starts on any roof we didn't originally install.
Documentation for Warranty and Insurance Purposes
Every leak repair we perform gets photographed before and after, with a written summary of the failure mode, seam separation, punctured membrane, failed flashing, whatever we found. If the roof carries an active manufacturer warranty, we check whether the repair needs to go through the manufacturer's approved contractor process to keep that warranty intact, rather than performing a repair that technically voids coverage the owner didn't realize was at risk. This documentation also becomes useful if the leak is later tied to a storm event and the owner needs it for an insurance claim.
Recurring Leaks and Root-Cause Findings
Some buildings call us back for the same leak location more than once because a prior repair addressed the symptom rather than the mechanism, a drain that backs up during heavy rain because the sump is undersized, or a parapet wall that's letting water behind the counterflashing every time wind drives rain sideways during a summer thunderstorm. When we find a repair location has a repeat history, we flag the underlying design or installation issue in writing rather than repeating the same patch a third time.
Emergency Response for Active Leaks
For an active leak during a storm, our first priority is stopping water from spreading, which usually means a temporary dry-in over the affected area before we can safely diagnose and repair permanently. Once the weather clears, we return for the full diagnostic and permanent repair, and the temporary work gets folded into the documented scope so there's a continuous record from first response to final repair.
Leak Repair Questions From Property Managers
Why doesn't the leak show up directly above the interior stain?
Water travels along deck seams and structural members before dripping down, so the entry point on the roof is often several feet or more from where the stain appears inside. That's why we trace from the roof rather than repair at the ceiling location.
Will a leak repair void my roof's manufacturer warranty?
It can, if the repair method or materials don't match manufacturer specification or if the warranty requires manufacturer-approved contractors for repair work. We check the warranty terms before starting repair on any roof we didn't originally install.
How do you find a leak when there's no visible hole in the membrane?
Moisture scanning or infrared imaging maps wet insulation beneath an intact-looking membrane surface, which often reveals the entry point is a failed seam or flashing detail rather than a puncture.
What if the same spot keeps leaking after repair?
A repeat leak usually means the original repair addressed a symptom, not the mechanism, an undersized drain, a flashing detail that can't handle wind-driven rain, or ongoing movement at a structural joint. We document and flag that root cause rather than repeating the same patch.
Can you make emergency repairs during a storm?
Yes, temporary dry-in work stops water intrusion during active weather, and we return once conditions clear for full diagnosis and permanent repair, with both stages documented as one continuous record.