French drains in Montreal, South Shore & North Shore
French drain installation and repair, plus foundation crack repair by an RBQ-licensed team. The method, scope and applicable warranty terms are explained in writing before digging.
Complete services for your foundation
A focused team for French drain work and foundation crack repair, with the method explained before work begins.
Show what will be buried.
A strong quote explains more than “replace the drain.” It identifies the source, wall protection, drain base, clean stone, water discharge and final grading.
- Before digging
Diagnose and locate
We confirm the moisture source and available drain access. Utility locating is requested before digging, with additional site-specific checks where needed.
- Excavation
Protect the work zone
Sloping, shoring, barriers and safe distances are adapted to the soil and depth. Spoil and machinery stay back from the edge.
- At footing level
Build a readable drainage layer
A drain of at least 100 mm sits on a stable base, with at least 150 mm of clean coarse aggregate beside and above it, then discharges to an authorized system.
- Before closing
Document and finish
Wall protection and connections are checked before backfill. Final grading moves surface water away from the foundation.
How much does a French drain cost?
Our calculator gives you a realistic price range in under 30 seconds, based on the size of your home, the depth of the foundation and the soil type. Free, instant, and no personal information required.
- Installation or targeted repair
- 2026 Quebec market pricing
- Detailed cost breakdown
The interactive calculator is available in French.
The recognized experts in French drains
Diagnosis before work
The proposed method is based on the symptoms, site access and foundation conditions observed.
Displayed RBQ number 5681-8941-01
The licence number is shown on the quote so it can be checked before work begins.
Written warranty terms
When a warranty applies, its scope, duration and exclusions are stated in writing.
Active infiltration
Call us to describe the situation and confirm the next available appointment.
Detailed free quote
The proposed work, pricing and relevant conditions are explained in writing.
Local service area
French drain and foundation crack work across Montreal, the South Shore and North Shore.
Your questions, our answers
Common market ranges are about $10,000 to $25,000 for a new installation and $3,000 to $8,000 for a partial repair. These figures are indicative only: depth, length, soil, access and the actual scope of work can change the price.
Understand the problem before digging.
Describe the visible signs and receive initial guidance. The on-site quote then confirms access, method and price.