First, there needs to be what I call ‘water forensics, roof assessment or investigation’.
Water can track a considerable distance from the original point of entry.
This needs to be determined prior to works starting.
Using a concrete roof as an example - water may track underneath the existing failed sheet membrane and find its way out to rooms below.
Inevitably the entire rooftop may require a newly installed robust membrane - not just the area of water leaks.
For more information refer to our article:
SOLVING ROOF AND BALCONY WATER LEAKS IS NOT JUST ABOUT WATERPROOFING
Original Article by Paul Evans appeared in Facility Perspectives