PROJECT PHOTOGRAPHS

Examples of our plumbing and flood-protection work.

See representative installation stages for backwater valves, sump systems, interior drainage membrane work and exterior sewer access. These photographs show workmanship and process—not a promise that every property will need the same scope.

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Backwater valve access installed within an opened basement floor — Backwater-valve installation stage with service access retained.

CASE EXAMPLE 01

Backwater valve installation and accessible floor finish

A backwater valve helps address reverse sewer flow. The installation typically requires confirming the private sewer route, opening the floor, placing the approved valve in the correct orientation and leaving an accessible cover for future inspection and maintenance.

Backwater valve body placed in the basement floor excavation — 01Valve placementThe valve body is positioned in the private sewer line.

Backwater valve with inspection opening visible before the floor is restored — 02Inspection accessThe operating components remain reachable from above.

Backwater valve access cover surrounded by granular base before concrete finishing — 03Base preparationThe opening is prepared before the floor surface is restored.

Finished backwater valve access cover set into restored concrete — 04Finished accessThe cover remains visible and serviceable after restoration.

What this work addresses

Reverse flow from the municipal sewer into the private plumbing system, subject to system layout and valve suitability.

What it does not address

Groundwater, foundation seepage or surface water entering through walls, windows or grading.

Important next step

Confirm permits, inspection requirements, existing fixtures and municipal-program sequence before eligible work begins.

CASE EXAMPLE 02

Interior drainage membrane at the foundation wall

Interior membrane and drainage details can help direct water toward an appropriate collection or drainage route. The design must account for the wall condition, floor edge, drainage path and sump or discharge arrangement.

Technician applying mortar beside interior drainage membrane — Membrane and drainage channel work at the wall-to-floor edge.

Level used to check the base of an interior drainage membrane installation — Checking the installation line and transition.

Technician detailing the edge of an interior foundation drainage membrane — Finishing details around the membrane and channel.

Plastic containment set up around basement plumbing work — Dust and work-area containment used during interior construction.

CASE EXAMPLE 03

Serviceable sump and sewer access

Flood-protection plumbing should remain understandable and maintainable after installation. Covers, discharge piping, cleanouts and access points should be visible and reachable for inspection or service.

Installed sump pump basin with sealed cover and discharge piping — **Sump pump basin**Equipment connections and cover remain accessible.

Two exterior sewer cleanout pipes beside a home — **Exterior cleanouts**Access points support future inspection and maintenance.

Restored basement floor around a completed backwater valve access cover — **Restored floor area**Finished work with the valve cover retained.

Project-photo note

These photographs are representative examples supplied by Ouellette Plumbing & Drains. They are not engineering drawings and do not determine the correct work for another property. Final recommendations depend on assessment, plumbing layout, site conditions, applicable codes, permits and municipal requirements.

PROJECT QUESTIONS

What homeowners usually ask after seeing the work.

Will my basement floor look exactly like these examples?

No. Access size, pipe depth, floor construction, existing finishes and restoration needs vary by property.

Can the backwater valve be covered after installation?

The access point must remain reachable for inspection, cleaning and maintenance. It should not be permanently concealed.

Does an interior membrane replace exterior waterproofing?

Not automatically. Interior and exterior approaches manage water differently. The correct option depends on the source of water, wall condition, access and drainage strategy.

Can you use these photos to estimate my property?

They help explain the process, but an estimate requires information about your property and, when appropriate, an on-site assessment.

Published by BasementFlooding.ca / Ouellette Plumbing & Drains. Updated July 24, 2026.Project scope depends on the property, existing plumbing and an appropriate assessment.Our content standards →