--- title: "Lead flashing repair and replacement" description: "Lead flashing repair and replacement in Thatcham, Newbury, Reading and Basingstoke by Topmark property maintenance. Call any time day or night." canonical: "https://topmarkroofers.co.uk/services/lead-flashing-repair" --- # Lead flashing repair and replacement > Lead flashing repair and replacement in Thatcham, Newbury, Reading and Basingstoke by Topmark property maintenance. Call any time day or night. Lead flashing repairs by Topmark property maintenance protect roof junctions and chimney stacks from water leaks. We replace damaged leadwork to keep rainwater out of your home. ## Flashing pricing Every roof junction is different. We inspect the chimney, abutment or valley first to check the condition of the lead and surrounding masonry. - Lead flashing repair: Price on request - Covers the assessment of split, lifted or corroded lead junctions - Quotes reflect the required code of lead and scaffolding access needed - Masonry repointing or timber repairs are priced after inspection ## Where flashings are used Flashings protect the vulnerable joins where a pitched or flat roof meets vertical brickwork or joins another roof slope. - **Chimney stacks:** Chimneys take the brunt of Berkshire weather. Stepped flashings cut into the mortar courses keep rain from running down the stack into the roof space. - **Wall abutments:** Where an extension roof meets the main house wall in Newbury or Thatcham, cover flashings keep driving rain out of the joint between tiles and brick. - **Valleys and gulley details:** Pitched roof intersections funnel large amounts of rainwater. Properly formed lead channels carry that runoff safely into the guttering. ## What replacing lead involves Replacing lead flashings requires careful masonry preparation and the correct sheet metal methods to ensure a weather tight seal. ### Part of the leadwork - Chasing out mortar joints to the correct depth for lead wedges - Removing split, slipped or incorrectly installed lead pieces - Forming new lead sections with correct overlaps and step depths - Securing lead with lead wedges and pointing with suitable sealant - Treating finished leadwork with patination oil to stop white staining ### Separate from the leadwork - Full chimney stack rebuilds or extensive brickwork replacement - Internal plastering or decorative repairs below the leak - Structural rafter replacement underneath rotten roof timbers ## Reading a failed flashing On the day of the visit, we examine the roof from safe access points to diagnose exactly why the flashing failed. 1. **Visual inspection:** We check for thermal fatigue cracks, loose mortar where edges pulled away from the chimney, and past temporary fixes like tape or mastic. 2. **Site preparation:** Please keep driveways or access paths clear below the working area so ladders and safety equipment can be positioned without delay. 3. **Assessment of adjoining tiles:** We inspect the slates or tiles immediately under the flashing to confirm water has not tracked beneath the roof covering. ## A flashing that holds Correct leadwork follows clear principles so the metal survives seasonal expansion without buckling or splitting. - **The right thickness:** Using the appropriate lead code ensures the sheet is substantial enough for the exposure of the roof without cracking under thermal stress. - **Room to move:** Lead expands in summer and contracts in winter. Limiting individual piece lengths gives the metal space to move without tearing itself apart. - **A held edge:** Chasing deeply into brick joints and securing with rolled lead wedges keeps the top edge anchored firmly against heavy wind and rain. - **No dependence on mastic:** Proper lead details rely on gravity, folds and overlaps to shed water rather than surface sealants that degrade under sunlight. ## Leadwork questions Answers to common questions about repairing and replacing lead flashings on domestic roofs. ### Can split lead flashing be repaired instead of replaced? Small splits can occasionally be lead-welded, but old lead that has thinned or cracked from thermal stress will usually split again nearby. Replacing the affected section is the practical approach. ### Why does lead flashing come loose from chimney brickwork? Mortar joints deteriorate over time, allowing lead wedges to loosen. High winds and building movement can then pull the flashing out of the brickwork chase. ### What is patination oil and why is it applied to new lead? Patination oil is applied to newly fitted lead to prevent carbonate staining, which causes unsightly white streaks down adjoining tiles and brickwork. ### How do I know if my roof leak is caused by the flashing? Damp patches on ceilings directly adjacent to chimney breasts or along wall junctions usually indicate rainwater entering behind a failed flashing. ## Business facts - Service area: Thatcham, Newbury, Tadley, Basingstoke, Reading, Didcot, Wantage, Andover, Wokingham, Abingdon-on-Thames - Hours: Mon, Tue, Wed, Thu, Fri 09:00–17:00 - Phone: +447846713949 - Email: team@topmarkroofers.co.uk ## Book Online - [Book Online](https://topmarkroofers.co.uk/#chat): Send the job details and postcode to Topmark property maintenance. ## Related pages - [Chimney repair and repointing](https://topmarkroofers.co.uk/services/chimney-repair-and-repointing): Chimney stack repair, repointing and flaunching. - [Roof leak repair](https://topmarkroofers.co.uk/services/roof-leak-repair): Roof leak repair and leak tracing. - [Flat roof repair](https://topmarkroofers.co.uk/services/flat-roof-repair): Flat roof repair for felt, fibreglass and rubber. - [Roof tile replacement](https://topmarkroofers.co.uk/services/roof-tile-replacement): Roof tile and slate replacement. - [Full sitemap](https://topmarkroofers.co.uk/sitemap.md): Complete machine-readable page directory.