Leadwork & Flashing in Sutton

If you're looking for Leadwork & Flashing in Sutton (SM1/SM2), you've come to the right place. AWN Roofing Specialists provide Specialist leadwork to BS standards. Heritage chimneys, valleys and flashings across South London.

About Sutton

Sutton town centre is surrounded by established residential streets of 1930s and post-war family housing. Common work: full re-roofs on ageing 1930s semis, garage roof replacements, and ongoing maintenance for local landlords.

What we offer in Sutton

Lead is the traditional material for roof flashings, valleys, chimney backs and parapet capping — and for good reason. Properly installed lead lasts 100+ years and remains the gold standard for period properties.

What is leadwork?

Rolled sheet lead (milled lead) used to weatherproof junctions and transitions on a roof:

• Flashing — joins between roof and wall/chimney/abatment
• Valley gutter — internal angle between two roof slopes
• Chimney back gutter — where chimney meets rear roof slope
• Apron flashing — joins roof to vertical wall
• Parapet capping — covers top of parapet walls
• Bay window roof — covers flat or pitched bays

Why lead?

• 100+ year lifespan — outlasts most other roofing materials
• Fully recyclable — sustainable choice
• Malleable — can be bossed (shaped) to fit any detail
• Self-healing — small scratches form protective patina
• Heritage-correct — the original material on Victorian/Edwardian properties

Lead codes (thickness)

Different applications require different lead thicknesses:

• Code 3 (1.32mm) — soakers under tiles/slates
• Code 4 (1.80mm) — flashings, apron pieces
• Code 5 (2.24mm) — horizontal flashings, chimney backs
• Code 6 (2.65mm) — valley gutters
• Code 7 (3.15mm) — flat roof bays, parapet cappings

We always specify the correct code for each application. Using thinner lead to save money is the most common cause of premature failure.

How we install leadwork (to BS 6915)

1. Measure and cut lead to correct dimensions (with 150mm minimum laps)
2. Form upstands, steps and welted edges as required
3. Fix with copper or stainless steel clips (NOT galvanised — they corrode)
4. Weld joins using traditional lead burning techniques
5. Patination oil treatment to prevent white staining on adjacent materials
6. Integrate properly with surrounding tiles or slates

Common leadwork problems

• Splitting at joints — usually thermal movement without proper expansion allowance
• Slipping — clips failed or absent
• Staining — lead run-off staining brickwork or render (mitigated with patination oil)
• Pinhole leaks — corrosion from acidic mortar contact
• Storm damage — high winds tearing flashing from chimney

Conservation area work

Most conservation areas (Wimbledon Village, parts of Putney, Carshalton Ponds) require leadwork on period properties — both for visual heritage and for longevity. We're experienced with Merton, Wandsworth and Sutton conservation requirements.

Cost guide

• Chimney flashing renewal (per chimney): £400-£800
• Valley gutter replacement: £80-£150 per linear metre
• Bay window roof: £600-£1,200
• Parapet capping: £100-£180 per linear metre

Why choose AWN Roofing for Leadwork & Flashing in Sutton?

• Local knowledge: We know Sutton properties — period homes, modern builds, conservation rules where applicable
• Fast response: Same-day emergency callouts, free quotes within 48 hours for non-urgent work
• Written quotes: Itemised, fixed-price, no hidden extras
• Certified work: NVQ-qualified team, full public liability insurance, manufacturer warranties
• Local reputation: Most of our Sutton work comes from word-of-mouth referrals