Roof junctions need careful detailing to keep water out while allowing materials to move. KC Roofing & Scaffolding Ltd repairs and installs roof leadwork across East London, North London and Essex, including flashings around chimneys, walls, valleys and other vulnerable details.

Leadwork defects we assess

Splits, lifted edges, inadequate laps, failed pointing and poorly supported lead can allow water to reach the roof beneath. A leak near a chimney or wall is not proof that the lead alone is at fault: we check the surrounding coverings, masonry and drainage before agreeing the repair.

• Chimney flashings, soakers and back gutters.
• Abutment and step flashings at roof-to-wall junctions.
• Lead valleys and associated roof detailing.
• Local repairs or replacement of failed lead sections.
• Lead details considered during re-roofing and roof overhaul works.

Repair or replacement?

A small defect may be repairable where the surrounding lead remains sound. Repeated splitting or a fundamentally unsuitable detail may need replacement. We consider the condition, support, movement and water flow rather than simply covering an unexplained leak with sealant.

A specification suited to the roof

The agreed detail considers the application, lead thickness, section sizes, laps, fixings and support. Lead needs room for thermal movement. Where masonry or roof coverings also require attention, we explain those related works so the junction can be addressed as a whole.

Safe access and the working sequence

Leadwork often sits at roof edges or around high chimneys. We assess whether scaffolding or another suitable access arrangement is required. Our in-house scaffolding can be coordinated with the roofing work. Tell us about building height, shared access, rear extensions and any restrictions when you enquire.

Frequently asked questions

Can failed leadwork cause a roof leak?

Yes, but leaks can have several causes. Inspection of the adjoining coverings and masonry helps identify the appropriate repair.

Will sealant be a lasting solution?

It depends on the defect. Surface treatment alone will not correct unsuitable support, detailing or movement. We explain whether a temporary measure or replacement is appropriate.

Can you include chimney repairs?

Where masonry, flaunching or pointing also needs work, we can quote for the suitable roofing-related repairs. Structural concerns are identified for further assessment.

Request a leadwork assessment

Send your postcode, photographs of the affected area taken safely, and details of any leak or previous repair.

Request a leadwork quotation  |  07947 455000  |  info@kccs.co.uk

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