Signs the junction needs checking
Loose edges, splits or ingress near a wall junction are reasons to assess the detail. They are not proof that the flashing is the sole source. Water can also enter through masonry above or neighbouring roof components and appear in the same place.
How flashing manages water
Flashing directs water across a transition between materials. Its overlaps, fixing and relationship to the covering matter. Movement and the condition of adjacent surfaces need consideration; a neat-looking strip of sealant does not show that the whole junction works.
Repair or replace the flashing?
A local defect may permit a targeted repair, while degraded material or unsuitable detailing can require renewal. Ask which parts are being retained and how the new work will integrate with the roof. Materials should be compatible with the existing construction.
Plan access and the repair scope
Access to the junction, the roof height and adjoining finishes affect the work. Some coverings may need lifting to reach the detail properly. The quotation should identify those associated works rather than treating the exposed flashing as the entire task.
Request a junction assessment
Record when the damp appears and whether the junction has been repaired before. A wider view of the roof-to-wall connection is often more useful than a close-up of the indoor stain alone, provided it can be taken safely.
Your questions, answered.
Is sealant alone enough to repair flashing?+
Not necessarily. Sealant may conceal a defective overlap or fixing without addressing the cause of ingress.
Does failed flashing always need replacing?+
No. Condition, compatibility and the nature of the fault determine whether repair or renewal is appropriate.
Could the wall above the roof be causing the damp?+
Yes. Masonry or other details above the roof can contribute, so the surrounding area needs consideration.
