One of the main culprits of below grade water ingress is the planter.  Most of the current waterproofing materials become delaminated from the concrete surface, allowing roots that have already penetrated the membrane to grow BEHIND the membrane.  The unually deep planters at this downtown highrise were experiencing heavy leaks in the underground parkade due to this exact issue.

The strata wanted a membrane that would self heal and also never delaminate from the concrete. Turbo Seal was trowel applied at 90mil then covered with HDPE to effectively waterproof the planters.