What our roof valley repairs include
Trace the full water path
We inspect from the valley top to the gutter, not just the wettest point.
Repair lining and leadwork
Failed valley sections and flashing details are treated to suit the defect.
Common causes of roof valley leaks
A roof valley carries a heavy share of rainwater, so even a small fault there can create a very persistent leak. Split linings, displaced leadwork, cracked mortar, disturbed adjacent tiles and built-up debris can all interfere with the way water is meant to move down the channel. Choose Smith & Son Roofing & Guttering when the source needs tracing properly rather than patched at random. We inspect along the valley's drainage path, looking for the entry point and any restriction that is slowing, diverting or backing up the water before it reaches the gutter.
Roof valley lining, leadwork and tile repairs
The right valley repair depends on what has failed. With Smith & Son Roofing & Guttering, that may mean local sealing, leadwork repair, renewing part of the valley lining or reinstating adjacent tiles that have shifted into the water path. The finish matters just as much as the repair itself, because the channel still needs a clean, unobstructed route into the gutter once the work is done. We also check the surrounding roof detail, so a leak blamed on the valley is not actually being fed by movement, cracks or poor drainage a little higher up the slope.
Frequently asked questions
Why do valley leaks often seem worse in heavy rain?
A valley handles more water than many other parts of the roof because it collects runoff from two slopes. If the lining is split, the lead has moved or debris is slowing the flow, heavy rain quickly exposes the weakness and pushes water into the roof structure.
Can a valley leak be caused by the tiles around it?
Yes. Adjacent tiles that have slipped, cracked or been disturbed can let water escape the proper channel or expose the edge of the valley detail. That is why we check the surrounding coverings as well as the lining itself before deciding on the repair.
Do all valley problems need a full replacement?
No. Some only need a local repair or reinstatement of nearby coverings. Others have deteriorated too far or are damaged along a longer section, which makes partial renewal or a larger replacement the better option. Inspection tells us which is sensible.