Lead details formed to work with the roof
Movement allowed for
Correct detailing helps the lead cope with temperature changes.
Surrounding roof checked
We inspect the covering that feeds water onto the leadwork.
Repair or renewal explained
The condition determines whether a section can stay or must go.
Seal the junctions where roof sections meet
Leadwork protects some of the busiest water routes on a roof. It is commonly found around chimney abutments, in valleys, beside stepped junctions and around penetrations. Splits, lifted edges, poor laps and tired fixings can allow rain behind the covering rather than guiding it away. For roof leadwork repair in London, we inspect the defective section and the tile, slate or flat-roof material connected to it. We also look for movement-related fatigue because lead expands and contracts as temperatures change. The position, detailing and spread of damage determine whether a focused repair or renewal is more suitable.
Allow the lead to move while keeping water out
A lasting detail needs more than sealing over a split. Lead must be formed with suitable overlaps, secured correctly and given room for thermal movement. We remove or open the affected section as needed, check the support and prepare the junction before repairing or renewing the lead. The finished detail must integrate with the surrounding covering and direct water towards the drainage route. If nearby tiles, slates or flat roofing have also deteriorated, we can include that local work so the junction performs as one complete weatherproof detail.
Frequently asked questions
Can a split in roof leadwork be repaired locally?
It may be possible when damage is limited and the remaining lead is sound. We assess the split, laps, fixings and signs of movement first. Widespread fatigue or poor original detailing may make section renewal more dependable.
Why does leadwork crack or lift over time?
Lead expands and contracts with temperature changes. Sections that are poorly fixed, incorrectly sized or unable to move can fatigue and split. Wind, worn supports and failed laps may also cause edges to lift and admit water.
Do you repair tiles or slates beside the leadwork?
Yes. Lead details only work when they connect properly with the surrounding roof. We assess adjacent tiles, slates or flat-roof material and can include local reinstatement where damage affects the complete junction.