Damp and the importance of maintaining lead flashing

During a recent survey of a property in Crewkerne signs of damp were identified within the house.  On one wall the stain was directly below the abutment between the roof to the extension and rear main wall elevation.  It is likely that some windblown weather penetration had occurred at this abutment detail at roof height externally in the past.  The lead flashing detail of the abutment had been temporarily sealed and we advised that this would require regular attention/monitoring to ensure weather tightness.  Ideally, in the long term, the lead flashing and soaker detailing should be replaced to avoid such risks in the future.

There were also signs of damp staining to timberwork in the rear extension roof void directly underneath the abutment between the rear extension roof and rear main wall elevation. We felt this was as a result of defects to the lead flashing detail at the abutment.  As before, the lead flashing detail of the abutment had been temporarily sealed and we advised that this would require regular attention/monitoring to ensure weather tightness.  Again, ideally in the long term, the lead flashing and soaker detailing should be replaced to avoid such risks in the future.