Why do Roof penetrations on flat roofs leak, and how can you prevent it?
Flat roof penetrations leak because they interrupt the roofing membrane and get stressed by movement, weather, and foot traffic. Most leaks start at weak flashing details around HVAC curbs, vent stacks, and pipes, or at seams that were rushed. Prevention comes down to proper curb height, watertight flashing, smart layout, and routine inspections after trades…
