A commercial roof leak rarely announces itself conveniently. When water starts coming through a ceiling tile during a monsoon downpour or a summer thunderstorm, what a property manager does in the first hour can be the difference between a contained repair and a much larger interior damage claim. Here's what to do, and what typically happens once a roofing crew arrives.
First: Protect the Interior, Then Call
Move anything valuable out from under the leak, place containers to catch dripping water, and if it's safe to do so, note where the water is entering relative to visible roof features like HVAC units, vents, or roof edges — that information helps a technician diagnose the source faster once they're on site. Then call for emergency repair rather than waiting to see if it stops; a leak that seems minor during a storm is often worse than it looks from below.
Why Flat and Low-Slope Roofs Leak Differently Than Sloped Ones
Most commercial buildings in Albuquerque use flat or low-slope roofing systems — TPO, EPDM, or PVC membranes — which rely on the membrane's seams, flashing, and drainage points staying intact rather than gravity alone shedding water. A single failed seam or a piece of flashing pulled loose by wind can let water travel laterally under the membrane before it finds its way through the deck, which is why the visible leak location inside the building often isn't directly under the actual point of failure on the roof.
Common Leak Sources on TPO, EPDM, and PVC Systems
The most frequent culprits are failed seams where two sheets of membrane meet, deteriorated flashing around rooftop penetrations like HVAC curbs and pipe boots, and ponding water that's found a weak point after sitting on a low spot in the roof for too long. Older EPDM roofs are also prone to shrinkage-related seam stress over time, while TPO seams can fail if they weren't properly heat-welded during the original installation.
What Happens During an Emergency Response Visit
An emergency repair visit starts with locating the actual point of water entry, which sometimes requires flood-testing suspect areas rather than relying on where the interior damage appeared. Once the source is identified, a temporary or permanent seal is applied depending on weather conditions and material availability, with a permanent repair scheduled promptly if a temporary fix was necessary to stop the leak the same day.
When a Leak Signals a Bigger Problem
A single isolated leak is usually a straightforward flashing or seam repair. Multiple leak points, or leaks that keep reappearing near the same general area after repair, often indicate the membrane itself has reached the end of its service life and needs broader roof restoration, a coating system, or in more advanced cases a full roof replacement rather than continued spot repairs.
Preventing the Next Emergency Call
Most emergency leaks are preventable with a roof preventive maintenance program that catches failing seams and deteriorating flashing during a scheduled inspection rather than during a storm. Patriot Asphalt and Construction provides emergency leak repair, roof inspection, and preventive maintenance programs for commercial and facility roofing systems across Albuquerque, Rio Rancho, Santa Fe, Los Lunas, Belen, Bernalillo, Placitas, and Moriarty, alongside full TPO, EPDM, and PVC installation and replacement services.
