MAIN DRAIN UNCLOGGING
SERVING MONTREAL
24 / 7
Customer Testimonial
"(Translated by Google) Excellent work, honest, punctual, and very professional. The work performed included unblocking and cleaning the main drain of the house, removing roots, and other debris. Thank you, Scott. (Original) Excelente trabajo, honesto, cumplido y muy profesional. El trabajo realizado fue el desbloqueo y limpieza del drenaje principal de la casa, raíces entre otros. Gracias Scott."
✓ See full review on GoogleHow to Know if Your Main Drain Is Blocked
IF WHAT IS MENTIONED BELOW IS TRUE FOR YOU, THERE ARE STRONG CHANCES YOUR MAIN DRAIN IS BLOCKED.
Drain backs up With any use of Water?
flushing a
toilet,
Using any
sink
or Fixture causes water to come back up through one or more other drains.
Lower level tenant wont stop trying to contact you
Water used upstairs is coming back through your tenant's
shower,
toilet,
laundry, floor drain or even garage drain.
Water Pooling Around Your Main Drain Cleanout or Backwater Valve?
Your drains won't empty, and water is pooling around your main drain cleanout or backwater valve even though the cover is closed.
Large trees nearby and the same backup keeps returning?
Roots may have entered the main drain through joints or openings, catching debris and restricting the flow of water.
Unblocking an 8-inch horizontal main drain in Montréal
Corporation d'habitation Jeanne-Mance's government housing building
The drain was packed with grease and debris for at least 30 feet downstream of the wye shown in the photo. The only accessible cleanout was 20 feet above ground, requiring us to operate the RIDGID K-5208 from a small aerial work platform with limited working space. Despite the difficult access, we successfully cleared the blockage and restored drainage.
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Price for a Blocked Main Drain
The price is explained before the work starts, with no hidden charges.
Price depends on access and buildup
Main-drain unclogging starts at $300 before tax, or $400 before tax with a camera inspection.
The final price depends on access, pipe condition, the type of blockage and the work required.
Pricing is confirmed before work begins.
No additional charge for night or weekend service.
If the same drain blocks again within 30 days of service, it will be taken care of at no charge.
(See our privacy policy
for more details.)
To discuss your situation and confirm pricing:
CALL 514-829-7514
or
TEXT 514-829-7514.
The Silent Invasion of Roots
How roots penetrate your pipes
Roots naturally seek out moisture. Your main drain can be an attractive target — moist, nutrient-rich and accessible.
Even a microscopic crack or slightly loose joint is enough. Rootlets infiltrate through these openings,
then grow inside the pipe over time, catching debris and narrowing the flow.
Managing recurring root problems
Main Drain Unclogging Service Areas
Sewer line backup and main drain unclogging are available in Montreal and surrounding areas.
Service in your area
We work in Homes, Duplexes and Triplexes, condos, Apartment & Multi-Unit buildings, as well as Commercial and Institutional properties.
Montreal and boroughs
Main drain unclogging for slow drains, recurring backups and active wastewater backups across Montreal.
Laval
Main drain unclogging help for homes dealing with roots, wipes, grease buildup or active main-line backup.
Longueuil and South Shore
Service for urgent main drain unclogging and urgent main-line backup problems on the South Shore.
Frequently Asked Questions
You do not normally need to shut off the building's water supply just to unclog a main drain. If there is an active backup, stop using sinks, toilets, showers, the dishwasher and the washing machine until the line is checked, since anything that sends water into the drain can make the backup worse. If the basement is flooding or wastewater is coming up through a floor drain, call now and use the emergency drain service page.
Often, yes. The cause can sometimes be identified from what is physically removed from the line — for example roots, grease or buildup, wipes or another foreign object. When a camera inspection is performed, it can also help identify conditions inside the pipe and possible reasons for recurring blockages. In some cases, the exact cause cannot be confirmed.
Not every main-drain clearing requires a camera inspection, but it is useful for after-repair verification — confirming the line is clear and checking the pipe's condition, especially for recurring backups or suspected pipe damage. It's available as a $100 add-on to a drain unclogging service, or $250 as a standalone inspection.
Yes. AAA Complete Drainage works in houses, duplexes and triplexes, condos, apartment and multi-unit buildings, as well as commercial and institutional properties.
Yes. When requested, AAA Complete Drainage can provide documentation for your insurance file, including a written description of what was observed, the work performed, and job photos when available. We don't determine insurance coverage or guarantee that an insurer will accept the report — that's between you and your insurance company.
If extra work or a different approach is needed, we explain it first and confirm any price change before continuing.
Main Drain Still Backing Up? Call Now
For planned main drain clearing or unclogging an active main-line backup, call before the blockage gets worse.
24/7 main-drain service with no added night or weekend surcharge.