Valleys direct the water flow from the faces of the roof down to the gutters. They are called valleys because they lie in the valley of the join of where two faces of the roof join together.
Valleys require regular maintenance because any leaves or debris that get trapped in the valley will redirect the flow of water into the ceiling.
Valleys have to be replaced for a number of reasons:
- Old valleys are often rusted or corroded, often in unseen areas.
- The lip (raised edge) may be rusted or corroded, flattened, brittle, too big or small.
- Existing valleys may be insufficiently installed.
From the ground your valleys may look ok but the problem is often covered by the overlapping tiles. Valleys are a major cause of water leakage if they aren’t to correct standard.