Our FAQ
Wondering If Your Plumbing Problem Requires a Professional?
Drain Rex answers all your questions about residential and commercial plumbing. We help you understand when to act, how to prevent costly problems, and what solutions are available to protect your home.
FAQs
1. How do I know if I need professional drain cleaning or if I can do it myself?
You need a professional if:
- Water drains slowly in multiple drains
- Odours persist despite cleaning
- You hear gurgling sounds in the pipes
These signs indicate deep blockages that chemical drain cleaners cannot completely resolve. Home solutions work for small surface clogs, but obstructions caused by grease buildup, tree roots, or calcium deposits require professional equipment.
At Drain Rex, we use high-pressure hydro-jetting and HD camera inspection to permanently eliminate blockages. If the problem returns frequently after your unclogging attempts, it's a sign that professional intervention is necessary to avoid costly water damage.
2. How often should I have my pipes inspected to prevent major problems?
For a single-family home, have your pipes inspected every 5 to 10 years. For a condo or multi-unit building, maintenance should be performed every 3 to 4 years due to more intensive use.
Increase frequency if you have mature trees near your sewer lines (inspection every 2-3 years) or if your home is over 30 years old without recent inspection. Preventive maintenance with HD camera inspection identifies cracks, corrosion, or infiltrated roots before they cause sewer backups or basement flooding.
This proactive approach saves you costly emergency repairs and protects your real estate investment.
3. What are the signs that a sump pump is no longer working properly?
Main signs include:
- A pump that runs continuously without stopping
- Unusual noises (grinding, clicking)
- Visible rust and standing water in your basement
These symptoms indicate imminent failure. If your pump is over 7 to 10 years old, it's approaching its end of service life and requires inspection. Test your pump at least once a year, ideally before spring or snowmelt in Montreal. A defective float, mechanical wear, or mineral deposits can compromise its effectiveness.
At Drain Rex, we offer inspection and preventive maintenance services to ensure your system works properly during critical periods of heavy rainfall.
4. How does HD camera inspection work and what problems can it detect in my pipes?
HD camera inspection uses a high-definition camera inserted into your pipes to visualize the interior of pipes in real-time, without excavation or demolition. This technology precisely identifies the location and nature of problems.
The camera detects:
- Infiltrated tree roots
- Cracks or pipe ruptures
- Grease or calcium buildup
- Stuck objects
- Pipe sagging
- Corrosion
It's particularly useful for recurring slow drains, before purchasing a property, or after nearby construction work. This method allows us to provide precise diagnosis and recommend the most appropriate solutions, while reducing repair costs through exact problem location.
5. What is a French drain and how can it protect my home against water infiltration?
A French drain is an underground drainage system that collects and diverts water away from your foundation to prevent infiltration into your basement. It consists of a perforated pipe surrounded by gravel installed around the perimeter of your home.
This system is essential in Montreal due to freeze-thaw cycles, heavy rainfall, and snowmelt that create pressure on foundations.
You need a French drain if you observe:
- Moisture in the basement
- Foundation cracks, musty odours
- Water accumulating around your home
A properly installed French drain lasts 20 to 30 years. If your home dates before 1990, your system could be clogged or deteriorated and require replacement.
6. Why does my drain keep clogging, and how can I prevent these recurring obstructions?
Recurring blockages signal an underlying problem: grease accumulation, infiltrated tree roots, sagging pipes, or internal corrosion. Repeated unclogging only temporarily resolves the symptom, not the cause.
Kitchen prevention:
- Never pour grease down the sink
- Use protective screens
- Rinse with hot water regularly
Bathroom prevention:
- Install hair catchers
- Avoid flushing hygiene products down toilets
Properties with trees:
- Do hydro-jetting cleaning every 2-3 years to eliminate roots
If your drains clog more than twice a year, an HD camera inspection will identify the root cause and enable a permanent solution rather than repeated interventions.
7. Do you offer 24/7 emergency service?
Yes, absolutely! We are available 24 hours a day, 7 days a week to respond to all your plumbing emergencies. No problem is too big or too small for our team.
8. How much does a plumber cost in Laval or Montreal?
We offer free quotes for all our services. The cost varies depending on the nature of the problem and the extent of the work required. Don't hesitate to contact us at (514) 713-3244 to get a personalized estimate tailored to your situation.
9. What types of repairs do you do?
We offer a full range of residential and commercial plumbing services:
- Drain, pipe, sewer, toilet, sink, gutter, shower, and bathtub unclogging
- HD camera inspection for accurate diagnosis
- High-pressure cleaning (hydro-jetting)
- Leak detection and repair
- Excavation and French drain installation
- Sump pump installation and maintenance
- Emergency services for all your urgent needs
10. Do you work at night, on weekends, and on holidays?
Yes, we operate 24/7, including nights, weekends, and holidays. We understand that plumbing emergencies don't follow office hours, which is why we are always available for you.
11. Can you unblock a completely blocked drain?
Absolutely! Drain unblocking is one of our specialties. With over 20 years of experience and our state-of-the-art equipment, including high-pressure cleaning, we effectively eliminate all types of blockages, no matter how severe.
12. Do you have a valid RBQ licence?
Yes, we are proud to hold a valid RBQ licence (number 5826-5349-01). We are also members of APECQ and CMMTQ, which reflects our professionalism and commitment to quality.
13. How do I shut off the main water supply in an emergency?
In case of an emergency, we recommend calling us immediately at (514) 713-3244. Our team will guide you step by step on the measures to take while waiting for our arrival, including how to shut off the main water supply if necessary. We respond quickly to minimize damage.


