Lead Work & Flashing
Lead Work & Flashing Repairs Across Hampshire, Surrey & Berkshire
Failed lead work and flashing is one of the most common causes of persistent roof leaks. Thermoshield Ltd provides expert lead flashing repairs and replacements for homeowners across Fleet, Camberley, Farnborough, Bracknell, and the wider tri-county area — all fully guaranteed.
Roof Leaking? Failed Flashing Could Be the Cause
Cracked, lifted, or corroded lead flashing around chimneys, walls, valleys, and skylights is responsible for a huge proportion of roof leaks. Our experienced team will identify the source of the problem and carry out a lasting lead work repair. Call 07505 262511 or request your free quote below.
Expert Lead Work and Flashing — The Key to a Watertight Roof
Lead has been used in roofing for centuries, and it remains the gold standard material for creating watertight seals at the most vulnerable points of your roof. Wherever your roof meets a wall, chimney stack, skylight, dormer window, or another roof section, lead flashing provides the critical weatherproof junction that prevents water from penetrating the structure. When lead work fails — due to age, corrosion, thermal movement, poor original installation, or physical damage — the result is almost always a leak. These leaks can be persistent and difficult to trace, as water can travel along timbers and rafters before appearing as a damp patch on a ceiling or wall some distance from the actual point of entry. Thermoshield Ltd has over 20 years of experience diagnosing and repairing lead work failures across Hampshire, Surrey, and Berkshire, and we understand how to trace these problems back to their source and fix them properly.
We carry out all types of lead work and flashing repairs and replacements — from chimney flashings and step flashings to lead valleys, apron flashings, back gutters, and skylight surrounds. Whether you need a cracked chimney flashing re-sealed on a terraced house in Farnborough, a full lead valley replacement on a detached property in Ascot, or new lead work around a dormer window in Fleet, our skilled team delivers precise, durable results using code-appropriate lead sheet and traditional dressing techniques. We never use quick-fix sealants or flashing tape as a permanent solution — only properly installed lead that will protect your home for decades. All of our lead work is fully guaranteed, and we provide free, no-obligation quotes across all of our service areas.
Our Lead Work & Flashing Services
We repair and replace all types of lead work and flashing across residential properties in Hampshire, Surrey, and Berkshire. Every installation uses the correct code of lead sheet for the application, dressed and fitted using traditional techniques that ensure a long-lasting, watertight seal.
Chimney Flashing
Chimney flashings are among the most common points of failure on any roof. The junction between the chimney stack and the roof covering is constantly subjected to thermal movement, wind, and rain, causing lead to crack, lift, or separate from the brickwork over time. We repair and replace all chimney flashings — including step flashings up the side of the stack, apron flashings across the front, and counter flashings let into the mortar joints — ensuring a complete, watertight seal. One of our most frequently requested services across Camberley, Farnborough, Aldershot, and all surrounding areas.
Valley Flashing
Roof valleys — the internal angles where two roof slopes meet — channel large volumes of rainwater and are under constant stress. Lead-lined valleys can crack, corrode, or develop pinhole leaks over time, and debris build-up can cause water to back up and overflow beneath the tiles. We repair and replace lead valley linings, ensuring the correct overlap, width, and fall to handle even the heaviest downpours. Serving Fleet, Bracknell, Wokingham, Hook, and all nearby areas.
Step Flashing
Step flashing is used where a sloped roof meets a vertical wall — a common detail on extensions, lean-to roofs, and side elevations. Each piece of lead is stepped up the wall in line with the tile or slate courses, creating a cascading weatherproof seal. When step flashing fails, water runs down the wall and into the roof structure. We repair and replace step flashings using correctly sized lead soakers and cover flashings, properly let into the mortar joints for a lasting result.
Apron Flashing
Apron flashings are horizontal lead strips used where a roof slope meets a vertical wall or the front face of a chimney stack. They direct water away from the junction and down onto the tile surface below. Over time, apron flashings can crack, lift, or lose their seal against the wall, allowing water behind the tiles. We remove failed apron flashings and install new lead, properly dressed and chased into the brickwork. Available across Farnham, Basingstoke, Sandhurst, and all surrounding areas.
Skylight Flashing
Skylights and roof windows create a penetration through the roof covering that requires carefully fitted lead flashings to remain watertight. Whether you have a Velux window, a fixed rooflight, or a custom skylight, the flashings around the frame must be properly dressed and sealed to prevent water ingress. We repair and replace skylight flashings on all roof types, restoring the weatherproof seal without damaging the window unit. Serving Ascot, Windsor, Maidenhead, Windlesham, and beyond.
Back Gutter Lead Work
A back gutter is the lead-lined channel that sits behind a chimney stack on the high side of the roof, collecting and diverting rainwater around the stack. Back gutters are often concealed and difficult to inspect, meaning failures can go undetected for months. When the lead cracks or corrodes, water pours directly into the roof structure below. We repair and replace back gutter lead work, ensuring the correct falls and upstands to protect your home. A common repair on older properties across Hampshire, Surrey, and Berkshire.
Dormer Window Lead Work
Dormer windows have multiple junctions where the dormer cheeks, roof, and main roof slope meet — each requiring precisely fitted lead flashings. Dormers on loft conversions are particularly common across the area, and failed flashings around them are a frequent source of leaks. We carry out complete dormer lead work, including cheek flashings, top flashings, and any associated valley or abutment work. Serving Crowthorne, Lightwater, Bagshot, Yateley, and all surrounding areas.
Lead Roof Repairs
Beyond flashing repairs, we carry out all types of general lead roof work — including patching small areas of damaged lead, re-dressing lead that has slipped or lifted, and replacing entire sections of lead sheeting on flat and low-pitch roof areas. If you’ve noticed a roof leak and suspect the lead work may be the cause, call us on 07505 262511 for a free inspection. We’ll trace the leak to its source and carry out a proper, lasting repair rather than a temporary patch.
Roof Leaking? Failed Flashing Could Be the Cause
Cracked, lifted, or corroded lead flashing around chimneys, walls, valleys, and skylights is responsible for a huge proportion of roof leaks. Our experienced team will identify the source of the problem and carry out a lasting lead work repair. Call 07505 262511 or request your free quote below.
Don’t Let Failed Flashing Damage Your Home
A small lead work failure can cause serious water damage if left unchecked. Thermoshield Ltd provides expert flashing repairs and replacements across Hampshire, Surrey, and Berkshire — all fully guaranteed. Contact us today for your free inspection and quote.
F. A. Q
Frequently Asked Questions About Lead Work & Flashing
Lead work and flashing can seem technical, but the problems it causes are straightforward — leaks. Here are the answers to the most common questions homeowners across Hampshire, Surrey, and Berkshire ask about lead work. Call 07505 262511 if you need further advice.
Lead flashing is a strip of lead sheet used to create a watertight seal wherever your roof meets a wall, chimney, skylight, or another roof section. These junctions are the most vulnerable points on any roof, and without properly fitted flashing, rainwater would penetrate the join and cause damp, rot, and interior damage. Lead is the preferred material because it is extremely durable, malleable, and resistant to corrosion.
Common signs include damp patches or water stains on ceilings and walls near chimneys, skylights, or where an extension meets the main house. You may also notice gaps where lead has lifted away from the brickwork, visible cracks in the lead itself, or daylight showing through flashings when viewed from inside the loft. If you spot any of these signs, it’s worth getting a professional inspection before the damage spreads.
Properly installed lead flashing using the correct code of lead typically lasts 50 to 100 years or more. However, lead that was poorly installed, too thin for the application, or subjected to excessive thermal movement may fail much sooner. We always use the appropriate code of lead for each application to ensure maximum longevity.
It depends on the extent of the damage. Small cracks or localised failures can often be repaired effectively, but if the lead is extensively corroded, has thinned over a large area, or was poorly installed to begin with, a full replacement is usually the better long-term investment. We’ll always give you an honest assessment and explain both options during your free inspection.
Flashing tape and sealant products can provide a temporary fix in an emergency, but they are not a long-term substitute for properly installed lead. Self-adhesive tapes degrade in UV light, lose adhesion over time, and rarely last more than a few years. We always recommend proper lead flashing for any permanent repair, as it is significantly more durable and reliable.
The cost depends on the type and size of the flashing, the accessibility of the roof, and whether a repair or full replacement is needed. A simple re-seal on a small chimney flashing will cost considerably less than a full valley lining replacement. We provide free, no-obligation quotes for all lead work. Call 07505 262511 to arrange a free inspection.
We carry out lead work and flashing repairs across Hampshire, Surrey, and Berkshire — including Fleet, Farnborough, Camberley, Farnham, Aldershot, Bracknell, Ascot, Hook, Sandhurst, Wokingham, Crowthorne, Windlesham, Basingstoke, Windsor, Yateley, Maidenhead, Lightwater, Bagshot, and all surrounding areas. Call 07505 262511 for a free quote.
