FAQ
Clear, technical answers to the most common questions from our clients.
12 questions , All
The cost varies depending on the perimeter length, property accessibility, excavation depth, and the foundation's condition. For a standard home on the South Shore, you can generally expect a cost between $8,000 and $18,000. A free quote after an inspection will give you the exact figure, with no surprises.
On average, between 30 and 40 years. Drains installed before the 1990s have often exceeded their useful life, especially if they are made of clay, galvanized steel, or lack a geotextile membrane.
For a standard single-family home: 2 to 4 business days. This includes excavation, drain installation, backfilling, and finishing. We work in sections to never leave your foundation exposed overnight.
Yes, in the vast majority of cases. Water, electricity, and access to your home are maintained. Only the landscaping is temporarily disturbed.
It's the force exerted by groundwater against your foundation. When the French drain is clogged or non-existent, this pressure forces water through cracks, joints, and even the pores of the concrete, causing leaks and efflorescence.
The geotextile (a non-woven fabric) wraps around the drain and prevents fine particles of sand and clay from clogging the perforations. Without a geotextile, a new drain can lose its effectiveness in less than 5 years.
It's a calibrated, dust-free crushed stone that surrounds the drain. It allows water to flow freely towards the drain and resists long-term compaction. It is essential for effective drainage.
It's the maximum depth at which the ground freezes in winter, about 1.2 to 1.5 m in Quebec. The drain must be installed below this line to prevent damage from frost heave.
Yes, until the frost line makes excavation impossible. In an emergency (water in the basement), we are available year-round. For planned projects, the ideal period is from spring to late fall.
Yes, a 5-year written warranty on the installation, in addition to the manufacturer's warranties on materials. All our work complies with RBQ requirements.
Generally not. Insurance usually covers the damage caused by a water leak, but not the replacement of the drain itself. Preventive action is almost always less expensive than filing a claim.
Our specialty is single-family homes and small multi-unit residential buildings (up to 6 units). For larger projects, please contact us, and we will evaluate on a case-by-case basis.
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