Flashing: the small detail that prevents big leaks
Most roof leaks don’t happen because the field of shingles failed—they happen at transitions:
- Valleys
- Chimneys
- Skylights
- Roof-to-wall intersections
- Penetrations (vents, pipes, exhaust)
That’s why flashing quality and installation detail matter so much. A roof is only as strong as its weakest transition.