Bathroom Sink Drain Cleaning & Backup Repair Services

Pond/stand of water in the basin. Gurgle sound when brushing teeth. Water flows by way of minutes, instead of seconds. If you’re now having to contend with a bathroom sink backup every day, it’s time to take action on what’s going wrong in the pipe and get it fixed before it becomes a bigger issue.

For more than 20 years at BOS Plumbing and Drains, we’ve been helping homeowners and businesses in Mississauga, Hamilton, Oakville, Brampton and the surrounding GTA, get their drains moving again. Our licensed plumbers know the truth of the situation, ranging from a simple clog to a sink pipe clogged deep within the line and work to get to the root cause and solve the problem – not just surface the symptom for a week.

What's Really Causing Your Bathroom Sink Clogged Drain?

It doesn’t take a few minutes for a bathroom sink clogged drain to occur. This is typically a gradual process that homeowners are not aware of until the water has stopped flowing: 

  • Hair and soap scum that binds together and sticks to pipe walls
  • Toothpaste, dental floss, and grooming debris that narrows the pipe over time
  • Mineral scale from hard water that coats the inside of older pipes
  • Small objects, bottle caps, jewelry, cotton swabs that lodge in the trap
  • A drain bathroom sink clogged further down near the P-trap or main branch line, which needs more than a plunger to clear

Most often, a restroom sink clogged near the surface can be easily resolved. However, when the blockage is more deeply in the line, the homeowner can actually be damaging the existing pipes with chemical cleaners and other home remedies before calling in the professionals – which is why so many GTA homeowners reach out to us after trying to get the issue resolved on their own first.

Our Plumbing services

Expert solutions for all your residential & commercial plumbing needs

 

Service Areas

We serve the Greater Toronto Area and surrounding regions with local expertise

 

Is a Slow-Draining Sink a Plumbing Emergency?

Not all sinks backing up require a plumber tonight. When you have water backing up rather than draining, if you smell sewage or if several fixtures are backing up at the same time, then you have a real plumbing emergency with the potential of water damage to your cabinets, flooring or subfloor.

That’s why BOS Plumbing is truly a 24 hr plumbing company in the GTA. We are an emergency plumber that works around the clock, so we will be at your door the same day with no more after hours surprises added to your bill, and an up front quote before we ever do any work!

How We Fix a Sink Clog the Right Way

All jobs begin with a proper diagnosis – not a guess. Here’s what we do to avoid dealing with fix sink clog problems again: 

  1. Inspect the drain: We identify exactly where the blockage sits, whether it’s near the drain opening or further into the branch line.
  2. Choose the right method: Depending on the clog, we may hand-auger the line, snake it, or use targeted drain cleaning tools that clear buildup without damaging pipes.
  3. Clear the obstruction completely: Our goal with every sink clog fix is a full clear, not a temporary opening that clogs again in a month.
  4. Test the flow: We run water through the sink to confirm proper drainage before we consider the job done.

All of our diagnostic fee goes towards the repair which you’re approved for, so you’re never paying twice simply to determine what’s wrong.

When a Backup Means You Need a Sink Replacement, Not Just a Clean-Out

A persistent blockage is not necessarily caused by a build-up, it could be caused by the pipe. If the problem is the drain lines are corroded, cracked or improperly sloped, drain backups will continue to occur irrespective of the number of times the drain lines can be cleared. If your technician finds that the pipe has deteriorated, we’ll walk you through your options for a replacement drain for bathroom sink, including materials that resist future scale and corrosion.

It goes without saying that the fixture has to be the same. A leaky, worn or inadequate seal around the drain flange can cause leaks and sluggish drainage around the drain. If a replacement bathroom sink repair is a better option than another type of repair, we’ll tell you and will not try to pressure you to install something else. Then, if you’re doing a complete bathroom makeover, our plumbers can also do toilet bowl fixtures, faucet replacement, and other projects to help your entire bathroom function.

Why GTA Homeowners and Businesses Choose BOS Plumbing and Drains

When water can be the deciding factor, it’s important to select the right plumber. What we’re unique about us: 

  • 20+ years of hands-on experience serving Mississauga, Hamilton, Oakville, Milton, Niagara, Cambridge, Toronto, and Etobicoke
  • Licensed, insured, and WSIB-covered journeyman plumbers on every job
  • Upfront, transparent pricing with no hidden fees you approve the cost before we start
  • 1-year workmanship warranty on repairs, and a 25-year transferable warranty on sewer and water line replacements
  • 500+ plumbing jobs completed across the GTA with a 100% focus on customer satisfaction
  • Available as both a trusted residential plumber for home clogs and repairs, and a commercial plumber for restaurants, offices, and multi-unit properties that can’t afford downtime

From a home and business calling for a plumber in Mississauga to deal with a clogged bathroom sink today, to a call for a plumber in Hamilton for a commercial property that has a number of sinks and drains backing up, our staff responds to all calls with the same level of diagnostic care and honesty.

Don’t Let a Slow Drain Turn Into a Bigger Repair

A bathroom sink clogged drain rarely stays small. From slow draining to standing water, pipe strain and eventual repair that is much more costly than a same day clean out. The sooner you call the easier it’s usually going to be and the less money you’ll have to spend.

Don’t wait for the tapper drain to get worse when the toilet sink has slowed down, gurgles or fails to drain. Completely licensed, BOS Plumbing and Drains is a licensed plumbing service company with the know-how to unclog a clogged up sink, inspect the line and get it working like new, with no hassle, in a single day or 24 hours, wherever in the GTA.

Contact us anytime, day or night, to schedule your appointment: (905) 247-5747 or get a free quote online.

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    FAQs

    A standard new toilet installation removing the old toilet, inspecting the flange, setting the wax ring, installing and levelling the new toilet, connecting the supply line, and testing typically takes between 1 and 2 hours for an experienced plumber. More complex situations like flange repair, shutoff valve replacement, or wall-hung installations take longer. We’ll give you a realistic time estimate when we quote the job.

    Either works. If you’ve already purchased a toilet, we’ll install it. We’ll just confirm the rough-in distance and flange compatibility before we arrive. If you’d prefer us to supply the unit, we work with trusted suppliers and can recommend models that suit your bathroom dimensions, usage needs, and budget. We’re brand-agnosticour job is to install whatever you choose, correctly.

    Sometimes, yes. A toilet that clogs repeatedly despite normal use often signals a partial obstruction in the trap or drain line that a clogged toilet fix or plumber for clogged toilet visit can resolve. But in older toilets, chronic clogging can also indicate a low-flow design that simply doesn’t generate enough flush force for modern usage patterns. If you’re constantly reaching for the plunger or calling a plumber for clogged toilets more than twice a year, a toilet replacement with a modern, high-efficiency model might genuinely solve the problem.

    The rough-in is the distance from the finished wall behind your toilet to the centre of the floor drain (the flange). Standard rough-in in Canadian homes is 12 inches, but 10-inch and 14-inch rough-ins exist particularly in older homes across Hamilton, Niagara, and the GTA’s heritage neighbourhoods. If you buy a toilet before measuring your rough-in, you may end up with a unit that doesn’t fit your space. Our team measures before every installation and before recommending any specific model.

    A damaged, corroded, or improperly positioned flange is one of the most common complications we encounter during toilet installation jobs particularly in homes 30+ years old. A flange that sits below the finished floor level won’t allow the wax ring to seal correctly, which means toilet leak repair calls in your future. We repair or replace damaged flanges as part of our installation service, and we always inspect before setting anything. This step is what separates a proper installation from one that fails quietly over 6–12 months.

    In most cases, yes. Water pooling at the base of a toilet after flushing almost always points to a failed wax ring. The fix involves removing the toilet, scraping the old wax, inspecting the flange, and replacing the wax ring on the toilet before reinstalling. It’s not glamorous work, but it’s critical because a leaking wax ring causes subfloor water damage that can cost significantly more to repair than the original plumbing call. Don’t wait on this one.

    Toilet tank repair replacing the fill valve, flapper, flush valve replacement, float, or repair toilet flush valve is usually the right call when the tank components fail but the bowl and tank themselves are structurally sound. Tank components are relatively inexpensive and wear out over time regardless of toilet brand or quality. However, if the tank itself is cracked, or if tank repairs have been needed multiple times in a short period, a full toilet replacement is typically the more economical long-term decision. Our plumber toilet repair team gives you an honest read on this.