Services · North Vancouver
Interior Drainage Systems in North Vancouver
Interior drainage collects water at the slab-wall junction and routes it to a sump or approved discharge. It is a common North Van path when exterior excavation is limited, the basement is finished, or landscaping must stay - while still managing hydrostatic water that reaches the foundation.
Who this is for
- Finished basements where exterior dig disruption is unacceptable
- Lots with shared walls, tight side yards, or protected landscaping
- Homes with wall-floor seepage and a workable discharge path
- Owners who need controlled water management while exterior work is deferred or impossible
Useful when exterior excavation is limited or the basement is finished and you need a controlled water path.
How the work typically runs
- 1
Perimeter path layout
We mark the channel route, sump location, and finish protection so you know what will be opened before work starts.
- 2
Channel install
A perimeter channel is installed at the slab edge, detailed for vapour control where finishes allow, and tied into the collection path.
- 3
Discharge connection
Water routes to a sump or approved outlet. We check that discharge does not simply reload the foundation elsewhere.
- 4
Patch-back and notes
Finishes are patched where scoped. You get care notes for monitoring the system after storms.
What influences cost
We do not publish fixed prices here. Access, wall length, soil, restoration, and discharge routing vary too widely on North Shore lots. These are the factors that usually shape an estimate:
- Perimeter length and number of corners
- Finished versus unfinished basement disruption
- Sump install or upgrade needs
- Discharge routing constraints
- Vapour barrier and finish patch-back scope
Questions about interior drainage systems
Does interior drainage stop water outside the wall?
No. It manages water after it reaches the foundation. If exterior membrane is clearly needed, we explain that trade-off instead of selling interior work as a full substitute.
Can you work in a finished basement?
Often yes, with careful protection and patch-back. Disruption is real - we describe it in the written scope before you approve.
Do I still need a sump?
Many interior systems rely on a sump or gravity outlet. We size and place that as part of the same plan when required.