FLAT ROOF SERVICES
Skylight Leak Repair
A leaking skylight is almost always a flashing or seal failure at the curb, not the glass itself — common on additions and hillside remodels with flat or low-slope sections.
Why Skylights Leak
The skylight itself sits on a curb, and that curb has flashing around its perimeter tying it into the roofing membrane. When that flashing seal degrades — or was never properly integrated with the membrane in the first place — water gets in at the transition, not through the skylight glass.
On flat and low-slope roofs specifically, skylights need extra attention to drainage around the curb, since there’s less natural runoff helping water clear the area.
Frequently Asked Questions
Does a leaking skylight mean I need a new skylight?
Usually not. Most skylight leaks are a flashing or seal failure around the curb, which is repairable without replacing the skylight unit itself.
Why does my skylight only leak during heavy rain?
This usually points to a flashing detail that’s marginal but not fully failed — fine under light rain, overwhelmed once water volume or wind-driven rain increases.