The #1 cause of commercial roof leaks. We find and fix the leaks others miss.
Flashing is the metal or membrane material used to seal joints, edges, and transitions on a commercial roof. Penetrations are anything that goes through the roof—HVAC units, pipes, vents, skylights, drainage outlets, and more.
These are the weakest points on any commercial roof. When flashing fails or penetration seals degrade, water finds its way in—often causing extensive damage before you're even aware there's a problem.
These are the most frequent sources of penetration leaks on commercial buildings
Rooftop HVAC units have multiple penetrations—ductwork, condensate lines, and mounting pads. Gaskets degrade over time.
Plumbing vent pipes penetrate the roof and require specialized flashing boots that can crack or separate from the membrane.
Gas lines, electrical conduits, and utility pipes create multiple small penetrations that need proper sealing.
Skylight frames and curbs are notorious leak sources. The frame-to-glass seal and frame-to-roof flashing both fail over time.
Roof drains, scuppers, and gutters have complex flashing details where water flow is highest—prime failure points.
Antenna mounts, satellite dishes, and equipment rails create penetrations with movement that breaks seals.
We perform a detailed inspection of all penetrations and flashing, including interior inspection of the attic or ceiling space to trace leak paths.
Water can travel far from where it enters. We use our experience and testing methods to identify the true source—not just where it shows up.
We repair or replace damaged flashing, reseal penetration points with appropriate materials, and address any membrane damage.
We document all repairs with photos so you can see exactly what was fixed. You'll receive a detailed report of the work performed.
Don't wait for a small leak to become a big problem. Our expert team will find the source and fix it right—the first time.