Address routes around the barrier
If an existing course is bridged, correcting ground levels or other details may address the moisture path. Installing another DPC while leaving the bridge can be ineffective.
The original course and adjacent construction need assessment.
When a remedial course may help
Where rising damp is confirmed and a suitable effective barrier is absent, injection may be appropriate. Its specification must suit the masonry.
Associated plaster and drying requirements should be included in the proposed plan.
