Storm Events That Drive Emergency Calls in the Triangle
The Triangle's warm-season convective storm pattern produces afternoon and evening thunderstorms that arrive quickly, deliver wind gusts of 40-60 mph, and deposit 1-3 inches of rain in under an hour. Triangle research corridor campus buildings, the North Hills office towers, and industrial facilities along the I-40 western corridor near RDU Airport all sit in terrain that is open enough to receive full exposure to straight-line wind - the kind that finds the edge of a partially peeled TPO flashing and finishes the job in one gust.
Derecho events - organized lines of severe thunderstorms with sustained straight-line winds - cross through the Triangle two to four times per decade. They are not tornadoes, but they produce widespread, simultaneous roofing damage across a large geographic footprint. After a derecho crosses Wake County, we can expect emergency calls from dozens of buildings within the same 48-hour window. We triage by interior exposure - buildings with actively leaking water into occupied or tenant spaces get first mobilization; dry-in-stable situations are queued behind them.
The Carolina Piedmont ice storm is a different emergency category. The January 2022 event deposited three-quarters of an inch of glaze ice across the Triangle, which refroze through multiple freeze-thaw cycles over three days. Ice accumulation in roof drains and low spots prevented drainage entirely; when the melt came, water was already sitting on compromised membrane sections for 72 hours. Buildings with aging EPDM or modified bitumen roofs that had existing ponding problems saw accelerated deterioration in the days following.
How Emergency Response Works
Call 919-372-4890 directly. For active water intrusion into a commercial building interior, do not submit a web form - call. Our project manager on duty will ask for the building location, the nature of the failure if known, whether the building is occupied, and whether there are any special access requirements. We stage our emergency response from the Fayetteville Street office and from crew staging points that let us cover the Triangle research corridor corridor and the Raleigh-Cary-Durham triangle efficiently.
On arrival, we assess the active failure point and determine the dry-in method. For most membrane failures, a temporary tarp installation or emergency membrane application stops the intrusion within 1-2 hours. For catastrophic failures - wind-displaced sections, structural damage from fallen equipment, or damage that exposes a large roof area - we stage dry-in in sections, prioritizing protection of occupied spaces and sensitive equipment rooms first.
After dry-in, we document the failure with photos and produce a written emergency report that describes the failure mode, the temporary scope completed, and the permanent repair scope needed. That report goes to the building owner or facility manager, typically within 24 hours. For buildings with manufacturer-active NDL warranties, we notify the manufacturer's technical services team of the emergency and what was done - preserving the warranty's claim path.
Post-Emergency Permanent Repair
Dry-in is temporary by definition. The permanent repair scope follows, typically within 5-10 business days of the emergency depending on weather and material availability. Permanent repair restores the membrane system to specification, replaces any insulation that was saturated during the intrusion event, and addresses the underlying failure mode - not just the visible damage.
For buildings at regional healthcare campus health system campuses in Raleigh and Cary, or regional institution Rex Healthcare-affiliated medical office buildings, the permanent repair scope includes a written infection-control plan for the rooftop access period and a completion certification that the rooftop environment is restored to pre-event condition. These buildings cannot tolerate an extended period of compromised rooftop integrity given the patient-care environment below.
After the permanent repair is complete, we will conduct a 30-day re-inspection at no additional charge to confirm the repair is holding. This is particularly important after the Triangle's active thunderstorm season - a repair performed in May will be stress-tested by the convective storm pattern before summer is out, and we want to know the result.
Frequently asked questions
What is your actual response time for emergency calls in Raleigh?
For buildings inside the I-440 Beltline - which includes all of Downtown Raleigh, North Hills, Midtown, and the Raleigh campus campus corridor - our typical mobilization time is 2-4 hours from a phone call during business hours. After-hours emergency calls are answered by the project manager on duty; after-hours mobilization is 3-5 hours depending on crew staging. Buildings in Cary and Triangle research corridor are typically 30-45 minutes farther. We do not promise 1-hour miracle response; we promise honest timelines and crew that arrives ready to work.
How long does a temporary dry-in last?
A properly installed temporary tarp or emergency membrane application on a commercial flat roof is weather-serviceable for 30-90 days. We use materials rated for temporary commercial application, not blue poly tarps. The temporary dry-in is not indefinitely durable - it needs to be followed by permanent repair within 30-60 days depending on condition. We communicate this clearly in the emergency report and schedule the permanent repair before we leave the site.
Does emergency response affect my existing manufacturer warranty?
Not if the emergency work is documented and reported to the manufacturer correctly. We notify the manufacturer's technical services division of the emergency event and what temporary work was completed, which preserves the warranty claim path. A temporary tarp installation that is documented and followed by a manufacturer-specification permanent repair maintains the warranty. An undocumented emergency patch completed by a non-warranted contractor can void the warranty - which is one reason to call the contractor who knows your warranty's requirements.
