Foundation excavation and underground plumbing services
Excavation for underground plumbing, drainage, and foundations. Precise trenches for sewers, French drains, aqueducts, and footings—zero damage to residential properties.
Excavation provides access to underground infrastructure for installation, repair, or replacement. At Plomberial, we use compact equipment adapted to the challenges of residential areas in Montreal and the surrounding area: narrow yards, landscaped properties, restricted access. We dig with precision and protect your property.
Our excavation services
1. Excavation for underground plumbing
- Controlled excavation to the municipal connection (variable depth)
- Trench 18-24 inches wide, suitable for pipe diameter
- Excavation adapted to restricted access
- Backfilling with compacted layers according to municipal standards
- Restoration of the site included (lawn, paving, asphalt depending on the original surface)
2. Excavation for drainage and foundation
- Excavation down to foundation footing (6-8 feet deep depending on building)
- 24-36 inch wide trench for material access and 4-inch drain installation
- Protection of existing landscaping (low walls, paving stones, flower beds)
- Respect drainage slope 1-2% when restoring land
- BNQ-certified 4-inch Big O/PVC rigid pipe with geotextile membrane
3. Excavation for targeted repair of exterior drain
- High-pressure hydro-jet cleaning (up to 4000 PSI) to remove obstructions
- Replacement of defective sections only after camera inspection
- Trenchless lining if the drain structure allows it (CIPP)
- Cost-effective solution for partially damaged drains
If excavation is necessary: trench located at the break point identified by camera.
4. Preventive sewer maintenance
Recommended annual maintenance:
- Full drain camera inspection to identify sections at risk
- Preventive cleaning before deposits build up (hydro-jet or mechanical snake)
- Verification of connection to the municipal sewer system
- Early detection of roots and subsidence before complete blockage
Preventive maintenance avoids costly emergencies and extends the life of the system.
Why choose Plomberial for your excavation work?
- RBQ license and regulatory compliance: Qualified contractor with 20 years of experience in excavation work with appropriate permits. Comprehensive management of Info-Excavation procedures and municipal permits.
- Equipment adapted to your site: Excavation possible in restricted access areas, backyards, and narrow entrances. Equipment adjusted according to the required depth and site configuration.
- Compliance with CNESST standards: Mandatory shoring for trenches deeper than 4 feet. Worker protection and site safety in accordance with Quebec standards.
- Site restoration included: Compacted backfill in layers, final grading, coordination with specialized contractors for asphalt or paving stones if necessary.
Ready to plan your excavation work?
Contact us today for a free quote or if you have any questions about our excavation services.
Testimonies
“They had to dig to get to our broken sewer line. I was afraid it would be catastrophic, but no! Super precise work and they backfilled everything properly. You can't even see they went there!”
“Professional team, very satisfied.”
“Precise and clean work!”
“Major excavation work for the French drain. They had real pro machinery, not trash cans. They paid attention to my terrain, I really appreciate it.”
We excavate when it is necessary to replace or repair underground pipes: sewer, water inlet, French drain. If you have persistent leaks, backflows, or broken pipes underground, excavation becomes necessary to access damaged pipes.
No. First, a camera inspection is done to locate the problem exactly. Then, we only excavate where necessary using precise equipment. We protect your landscape as much as possible and put everything back in order afterwards.
It depends on the nature and extent of the work. A targeted repair may take a day, while a complete sewer or French drain replacement may take a few days. We give you a clear timeline right from the start.
We take care of everything. We contact Info-Excavation to locate public services (gas, electricity, water supply), we obtain the necessary municipal permits and we respect all safety standards. You don't have to manage anything on your end.
Absolutely. Once the work is finished, the trench is backfilled, the soil is put back in place and you can even take care of the peat, pavement or asphalt. We don't leave your yard like a construction site.
Let's discuss your project today!
Your home deserves better than a stroke of luck. Entrust the plumbing to the pros.
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