case study
French drain installation
Cost: $26,500
Duration: 1 week
The project consisted of installing a french drain on the 3 facades of the building constructed in the 1930s, in order to protect the foundations against humidity and allow better stormwater drainage system.
Project manager
Yahya Diallo
General contractor
Joseph Vani
The general contractor in charge of the project started with the excavation work up to the footings, all along with the building. Then, the foundation walls were cleaned and dried before repairing the concrete cracks. Then, the contractor proceeded with the waterproofing of the foundation walls with the installation of the Delta MS waterproof membrane. The french drain was subsequently installed along with the footings: it is perforated conduct, under a stone backfill, to allow the collection of water. It is connected to a new custom-built catch basin in the basement of the building.
The contractor also installed access and maintenance chimneys for the drain from the surface. The work was finished with the soil backfilling and the installation of new window wells.
Costs breakdown
French drain installation & backyard renovation
Mobilization
$4,000
Waterproofing and french drain
$15,800
Driveway excavation and backfill
$3,250
GST 5%
$1,153
QST 9.975%
$2,299
TOTAL (CAD)
$26,502
Payment schedule
French drain installation
End of Work (100%)
$26,502
TOTAL (CAD)
$26,502
Before French drain renovation
During French drain renovation
After French drain renovation
Warranty
All renovation projects have a 1-year warranty by default from the contractors who performed the renovation.
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