Lead flashing repair in Thatcham
Lead flashing repair from Topmark property maintenance seals chimney stacks and roof junctions to stop water leaks. We replace damaged leadwork to keep your property dry.
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- Local to Thatcham
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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.
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
- 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 stacksChimneys 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 abutmentsWhere 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 detailsPitched roof intersections funnel large amounts of rainwater. Properly formed lead channels carry that runoff safely into the guttering.
What happens on the day
On the day of the visit, we examine the roof from safe access points to diagnose exactly why the flashing failed.
- Visual inspectionWe check for thermal fatigue cracks, loose mortar where edges pulled away from the chimney, and past temporary fixes like tape or mastic.
- Site preparationPlease keep driveways or access paths clear below the working area so ladders and safety equipment can be positioned without delay.
- Assessment of adjoining tilesWe inspect the slates or tiles immediately under the flashing to confirm water has not tracked beneath the roof covering.
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Why choose Topmark property maintenance
“Good roofing starts with finding the cause, not just covering the symptom. I’ll explain what I find, talk you through the options and agree the right repair before work begins.”
Thomas, Topmark property maintenance
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Leadwork questions
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.