Lead Flashing in Polegate
Lead flashing in Polegate carries higher specification requirements than most inland locations. The dominant predominantly 1930s–50s semi-detached and detached with some post-war infill development means that many Polegate properties have original lead installations now at or past their design life. The local inland frost-pocket in the Cuckmere valley — sharper overnight frosts than coastal Eastbourne, causing accelerated mortar and valley joint deterioration accelerates corrosion — we specify code 4 lead as the minimum on all Polegate work, and code 5 on any property within 500 metres of the seafront or in a particularly exposed position.
The most common lead flashing failures we encounter in Polegate involve valley gutter failures on 1930s–50s stock. Incorrect lead grades fitted by previous contractors are the single most frequent problem — code 3 lead fails significantly faster in East Sussex's coastal climate and we will not fit it.
Lead Flashing Work We Cover in Polegate
Chimney apron and back gutter replacement. Stepped and cover flashings on chimney stacks. Valley lining replacement — code 4 minimum, properly lapped and clipped. Bay window flat roof lead replacement. Dormer cheek and head flashings. Abutment flashings where extension roofs meet walls. All lead work in Polegate is carried out by experienced lead workers, properly dressed and fixed into the mortar joint — not just pointed over.
Lead Code Specification for Polegate
Code 4 lead is our minimum specification for all Polegate properties. This is heavier than the code 3 that is sometimes installed to reduce cost — code 3 splits under thermal cycling within 8–12 years on exposed elevations. On coastal-adjacent Polegate properties and on chimney stacks with south or west aspects, code 5 is our recommendation. We will not substitute code 3 regardless of budget pressure.
How Lead Flashing Is Correctly Fitted in Polegate
Lead is cut and bent to profile, not just bedded in mortar or frame sealant. Stepped flashings are cut into the mortar joint and secured with lead wedges — not surface-fixed. Back gutters behind chimney stacks are laid with correct falls to the outlets. Patination oil is applied to all new lead on installation — this prevents the run-off staining that bleaches pointing and brickwork on Polegate properties.
Why Lead Flashing Fails on Polegate Properties
The most common cause of lead failure in Polegate is incorrect code — undersized lead that splits under thermal movement. The second cause is poor initial fixing — surface-bedded lead that lifts rather than step-flashed lead that cannot. Age-related fatigue on pre-1960 original lead is the third. In all cases the correct fix is replacement, not patching or sealant application over the existing lead.
Lead Flashing Costs in Polegate
Chimney apron replacement: £350–£550 · Back gutter: £400–£700 · Valley lining: £500–£900 · Full chimney flashing set: £600–£1,100 · All prices include code 4 lead and pointing. Free survey.
Free lead flashing survey for Polegate properties
0132 336 5960Properties on High Street and Wannock Road are among the most frequent lead flashing call areas we cover in Polegate. If your property was built before 1970 and has not had lead work in the last 15 years, it is worth arranging a free survey.