Lead Flashing & Leadwork in Northampton

Damp patches near a chimney breast and staining down an interior wall after driven rain are classic signs on Northampton's older streets. So is visibly lifted or cement-smeared flashing outside. Nationally, renewing a chimney's full lead set typically costs £400–£900.

Possibly — wind from named storms like Babet and Henk often disturbs flashing joints around chimneys and valleys on older stacks. The leak that follows can take weeks to show as a stain inside the property.

It's a common older repair, since cement fillets crack away from both surfaces within a few seasons. That traps water behind them. The right fix uses stepped lead cut into the mortar joints, since it lasts decades longer on the brick stacks typical of Northampton's older streets.

Damp patches near chimney breasts, or where an extension meets the house, are classic signs. So is staining down interior walls after driven rain. Visibly lifted, cracked or cement-smeared flashing outside is another.

Re-dressing or refixing lifted flashing might cost £150–£300. Renewing a chimney's full lead set (apron, steps, back gutter) typically costs £400–£900, depending on access. Lead valleys cost more since tiles on each side must come up.

Properly specified and fixed lead routinely lasts 60–100 years — usually outliving the roof covering around it. Most 'lead failures' are actually installation faults: undersized code, over-long runs without expansion joints, or mortar smeared over the top.

Yes — composite flashing products, such as flexible aluminium-cored membranes, perform well and cost less. Since they carry no theft value, this matters on churches, schools and unoccupied buildings. A roofer who works both will advise which suits your roof.