Underground structures are at high risk from water ingress and
with maintenance and repair being extremely difficult, expensive
and highly disruptive, an appropriate, technically proven and
reliable tunnel waterproofing system
Waterproofing that is less than 100% effective is leaking. At best
this can be unsightly, at worst it will cause degradation of the
structure itself, creating the potential for major remedial works
and a shorter service life for the tunnel.