Leadwork & flashing · A focused guide
Is split lead flashing the same problem as a loose edge?
Published by Big Ben Roofing Ltd
A split in the material and a loose edge are different observations, even if both occur at the same junction. The repair needs to address the condition found and how the flashing connects to adjoining surfaces. Describe the location and any known repair history without bending the metal to inspect it. Ask whether the proposal concerns a local defect, the way the flashing is retained or renewal of a larger detail.
Describe what the image actually shows
A dark line may be a gap, overlap or shadow, so avoid diagnosing a tear from an unclear photograph. Share the original image and a wider view identifying the wall or roof slope. If a survey labels the flashing as split, provide that wording and any supporting photographs. The contractor can explain which observation is confirmed and which requires closer access.
Ask why the repair addresses the defect
A proposal should identify the material, affected length and treatment of adjoining edges. If only a patch is suggested, ask why the surrounding detail remains suitable. If renewal is proposed, establish which connected covering or masonry must be disturbed. The written scope should distinguish permanent flashing work from any temporary weather protection and explain how additional findings would be agreed.
Useful details to record
- Identify the flashing location and the visible change without touching it.
- Share uncropped photographs and any existing survey description of the defect.
- Ask whether the material and adjoining connections have been identified.
- Confirm the repair length and any roof or masonry work included.
Use information already available from indoors or ground level. Do not climb onto the roof or disturb materials to complete this checklist.
Can sealant close any split or loose flashing edge permanently?
That should not be assumed. The material condition, movement and adjoining detail need assessment. Ask what the proposed treatment is intended to achieve and why it is suitable for the specific defect rather than relying on the word seal.
Background reading
- SPAB: maintaining slate, tile and metal roofs
- Lead Sheet Training Academy: flashing and junction details
General guidance helps frame the questions. The cause, suitable materials and scope depend on inspection of the particular roof.
Related questions
What if a flashing leak returns after several sealant patches?
Use previous patch history to frame a focused assessment of the material and junction rather than automatically repeating the same surface treatment.
What should be considered when lead flashing keeps opening at a joint?
Ask about the layout and adjoining connections when a flashing joint repeatedly opens, rather than approving an unexplained rigid patch.
Discuss what you have noticed
Include your postcode, the affected roof section and when the concern appears. The team will review the enquiry and confirm the next step, scope and availability.
Request a roofing assessment