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
A proposal should mark the channel route, sump or outlet, finish protection, demolition, and patch-back before the slab edge is opened.
- 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. The design should explain how the discharge avoids simply reloading the foundation elsewhere.
- 4
Patch-back and notes
The scope should state patch-back boundaries and the closeout notes needed to monitor the system after storms.
What influences cost
Prices are property-specific. Access, wall length, soil, restoration, and discharge routing vary by property. These factors usually shape a quote:
- 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. A proposal should explain that boundary and why interior control is being considered instead of, or alongside, source-side work.
Can interior drainage work in a finished basement?
It can be possible, but demolition, dust control, contents, protection, mould or damaged materials, and patch-back must be investigated and stated in the scope.
Do I still need a sump?
Many interior systems rely on a sump or gravity outlet. Capacity, location, power, backup, alarms, and the approved discharge route should be evaluated with the channel.