French drain in Lavaltrie

Our French drain services in Lavaltrie

For a new installation in Lavaltrie, we lay a Code-compliant drain: perforated pipe on a bed of sized clean gravel, continuous slope of at least 1% toward the outlet, geotextile membrane over the top. On riverside lots with a high water table, we favour corrugated BMT pipe over standard perforated PVC. BMT flushes more easily under high pressure, holds up better against iron ochre, and its connection to a sump pit with a submersible pump is often more appropriate than a direct storm-sewer connection when gravity drainage to the city sewer is not possible.

For an existing drain that is slowing down, high-pressure cleaning remains the most direct solution. A rotating nozzle is fed through the cleanout risers and sprays water at several thousand psi to lift sediment, fine roots and iron-ochre deposits. On older drains in Lavaltrie's established sectors, we always match the pressure to the pipe material so we do not damage a line already weakened by water and time.

Iron ochre is common along the Saint Lawrence, and Lavaltrie is no exception. Mechanical flushing alone is never enough in those cases: we add targeted sterilisation of the bacteria (Gallionella, Leptothrix) responsible for the orange deposit. In advanced cases, adding a dedicated sump pump or an interior cuvelage may become necessary to manage the problem for the long term. We explain the options in plain language and hand you a written estimate before any commitment.

A camera inspection accompanies every job. Before work to pinpoint the blockage, after work as proof that the drain is clear. You receive the video and a written report. For Lavaltrie homes without cleanout risers — particularly the older ones near the river — we offer to install four risers at the corners of the footing during the visit, which makes all future maintenance far simpler.