Shut-Off Valve Replacement & Installation in Toronto & the GTA
Toronto & the GTA • Call 647-784-8448
Shutoff valves are how you isolate water during a leak, a fixture replacement, or an emergency. Old gate valves seize, fixture stops drip, and many Toronto homes still have isolation hardware that does not actually isolate. Tornado Plumbing & Drains replaces and installs shutoff valves across Toronto and the GTA — main valves, fixture stops, and laundry shutoffs — so the next leak can actually be stopped.
Last updated September 5, 2026
When this service makes sense
Part of Water Lines & Service Upgrades in Toronto & the GTA
Book this service when
Book this when the main shutoff is seized open, a fixture stop drips at the packing nut, or an old gate valve cracks or will not hold when you need to isolate water.
Common signs
- Main shutoff is seized open and won't close.
- Fixture stop drips at the packing nut.
- Old gate valve has stem corrosion.
- Toilet or faucet shutoff cracks when turned.
If you're not sure, compare these too
- Pressure Reducing Valve (PRV) Installation - when the valve being replaced is a pressure regulator
- Faucet Repair & Replacement - when the fixture stop is being replaced with the faucet
On this page
Quick guide and key details
What changes price and scope
- Which valve: fixture stop versus main shutoff.
- Access and isolation logistics on an aged supply.
- Whether it is part of a larger plumbing visit.
How a professional visit usually unfolds
1. Isolate water
Use the next upstream valve or the meter shutoff. Required to cut into the line.
2. Remove old valve
Cut out the failed valve. Permanent replacement requires removal.
3. Install new valve
Solder, push-fit, or thread the new valve in place. Modern, reliable hardware.
4. Test
Open and close several times under pressure. Confirms the valve actually isolates.
5. Label
Mark what the valve controls. Helpful during the next emergency.
Recent Shut-Off Valve Replacement & Installation work
These real project photos show the kind of work this service involves, so you can see examples before you book.
Interior renovation rough-in plumbing in progress
This renovation-stage photo gives rough-in, repiping, and interior plumbing pages a stronger proof image than generic stock-style service graphics.
Technician handling a residential interior plumbing service call
This is a useful general indoor-service photo for interior plumbing pages where homeowners want to see a real technician on site instead of generic brand graphics.
Shutoff valve pricing (Toronto 2026)
| Service | Starting from | Typical range |
|---|---|---|
| Toilet or sink stop replacement | $120 | $120 to $280 |
| Laundry shutoff replacement | $220 | $220 to $450 |
| Main shutoff replacement | $320 | $320 to $750 |
| Adding a new shutoff | $280 | $280 to $600 |
Ranges are for planning and triage. Final pricing depends on access, urgency, materials, and whether the visit stays isolated once the area is opened.
Cities Where This Service Is a Strong Fit
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Licensed, insured, reviewed Toronto plumbers
- Serving Toronto & the GTA since 2015 — over 1,200 completed jobs.
- Master plumber T95-4969603 · Plumbing contractor T94-4992639 · Drain contractor T87-4722944 · Building renovator T85-4728632 · Plumbing license FI6216638.
- 4.9-star Google rating from 320+ reviews. 400+ HomeStars reviews (Best of 2019–2025). BBB-accredited.
- Same-day and after-hours dispatch across Toronto, Etobicoke, North York, Scarborough, York, Mississauga, and Burlington.
25-year workmanship warranty
Every job Tornado Plumbing & Drains completes in Toronto and the GTA — repair, install, replacement, drain work, sewer work, fixture work — is backed by a 25-year workmanship warranty. The written terms are provided with every quote. If our work fails within 25 years of the install date, we come back and make it right.
A working shutoff is the difference between a wet floor and a flooded house
When a fixture stop is seized or a main valve won't budge, the only way to stop water is to run downstairs and close the meter valve — which kills water to the entire home and assumes that valve still turns. Restoring proper isolation means a dripping toilet supply or a failing faucet can be shut at the fixture without touching the rest of the house. If a leak has already done damage while you fought a stuck valve, our leak detection and repair crew can trace and fix the source in the same visit.
Replace a shutoff valve when:
- Main shutoff is seized open and won't close.
- Fixture stop drips at the packing nut.
- Old gate valve has stem corrosion.
- Toilet or faucet shutoff cracks when turned.
- Laundry shutoffs leak constantly.
- Adding new fixtures and there is no isolation valve.
What's included
- Inspection of the valve and the line it sits on to confirm whether the stop, the connection, or the whole branch is the problem.
- Locating and using the correct upstream isolation point — fixture stop, branch valve, or the municipal meter shutoff — before any cut is made.
- Removal of the failed gate valve, compression stop, or seized ball valve and installation of a quarter-turn ball valve or compression stop matched to the line size and material.
- Soldered, threaded, or push-fit connection appropriate to the pipe (copper, PEX, or galvanized) so the new valve seals without leaks.
- Pressurized open/close testing of the new valve and a check of the joints under live water before we leave.
- Labelling of what the valve controls and cleanup of the work area.
- The written 25-year workmanship warranty covering the valve install and our connections.
Valve types we install
| Valve | Use | Notes |
|---|---|---|
| Quarter-turn ball valve | Main shutoff and fixture stops | Modern standard, reliable, easy to operate. |
| Gate valve (replacing old) | Mostly being replaced with ball valves | Old design that often seizes. |
| Compression stop | Toilet and faucet supply | Replaceable when leaking. |
| Push-fit valve | Quick installs in tight spots | Reliable when installed correctly. |
Shutoff valve cost
Pricing depends on which valve, how easy access is, and whether it's part of a larger plumbing visit. Fixture stops are the lowest cost. Main shutoff replacement on an aged supply line is higher because of access and isolation logistics.
What to share when you call
- Which valve is failing.
- Whether the next upstream valve still works.
- Pipe material and approximate age.
- Photos of the valve and surrounding pipe.
- Whether multiple valves need replacement.
- Any history of leaks behind walls.
Toronto context
Aged shut-off valves in Toronto basements are the reason a small leak becomes a flooded basement. Gate valves and old multi-turn ball valves seize in the open position; the fix is replacement with quarter-turn ball valves that actually close when you need them to. We add isolation valves at fixtures that don't have them.
When this is not enough
Replacing a single valve is straightforward. When multiple valves in the home are aged, leaking at the stem, or seized, valve-by-valve replacement gets expensive fast. At that point a repipe of the affected branch or a full supply repipe is usually the better economic answer — we will quote both so the comparison is honest.
What to confirm before approving valve work
- Replace with quarter-turn ball valves where appropriate — they last and operate reliably.
- Multiple aged valves should be flagged so they can be replaced together.
- Each valve should be tested through full open-close cycles.
Useful info on the call: which valve, isolation availability, pipe age, and other valves to check.
Frequently asked questions
Why won't my old gate valve close fully?
Gate valves seize over time as the stem and seat corrode. Forcing them often breaks the stem. The right answer is to replace with a quarter-turn ball valve.
Should I replace all my old valves?
If multiple are aged or seized, replacing them together saves on call-out cost and avoids being unable to isolate during the next emergency.
Can I replace a fixture stop myself?
If the next upstream valve works and you are comfortable with simple plumbing, yes. If the fixture stop is leaking because the upstream valve no longer holds, that is a bigger conversation.
Does the city need to be involved for a main shutoff replacement?
Usually no — the main shutoff inside the home is the homeowner's. The city is involved only if the meter or curb stop on the public side needs work.
Related services
Shut-Off Valve Replacement & Installation: real customer reviews
Recent Google reviews from Tornado customers across Toronto and the GTA, in their own words.
Kevin
October 2019“I called a couple of plumbers to help investigate a water leak in our main water line. Sergey at Tornado Plumbing was the most attentive and the only contractor that actually came to our place to look at the issue. All other contractors simply recommended replacing the water main and provided a quote using Google Maps and did not show up at the house at all. Sergey provided me with the option to fix the leak which was located just below the slab in the basement, but his recommendation was to replace our side of the water main as it was old lead pipe. Once our side was completed I could notify the city and they would schedule a time to replace the city side using a city contractor. We had some water damage in our basement because of the leak so Sergey scheduled a team to arrive within 24 hours after signing the project estimate. The team that arrived were excellent. They needed to do a little discovery to find the main water line in our front property as the location marking wasn't exact. They didn't get discouraged and found the old lead pipe and completed the work by torpedoing a new ¾" copper line from inside the house. The leak had created a lot of water under the basement slab which made the work a little difficult but the team worked in to the evening to make sure everything was complete, holes filled back in, new concrete poured, and to be sure the water in the house was working as expected. Everything was cleaned up perfectly and Sergey followed up on the work within a couple of days when he was back in the area to provide another estimate. Overall the experience with Tornado Plumbing was excellent. We need to install a sump pump (Sergey's recommendation) and replace our basement slab in the future – I'll definitely be calling Sergey at Tornado Plumbing.”
Most relevant to Main Water Line Repair & Replacement in Toronto & the GTA.
Google place photo: Tornado Plumbing & DrainsMark Maybank
August 2020“Troy and Mike were great to work with.”
Maya S
February 2023“Once again, excellent experience with Tornado plumbing! There was a leak in my basement to which they sent someone to assess the issue very quickly. The gentleman quoted us very fairly to replace an old pipe connected to the toilet and was back two days later to do the work. Incredibly kind, efficient, and tidy. I highly recommend!”
Authoritative sources for this service
Public references — City of Toronto programs, federal guidelines, and standards bodies — used for the rules and figures cited on this page.
- City of Toronto — Priority Lead Water Service Replacement Program(city)
- CSA B125.3 — Plumbing fittings(standard)
- Toronto Public Health — Free residential lead-in-water testing(city)
- Health Canada — Drinking Water Quality: Lead (MAC 0.005 mg/L)(federal)
- City of Toronto — Combined sewers and basement flooding(city)
- Ontario Building Code — Part 7: Plumbing Services(regulator)
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Fast answers before you call
Why won't my old gate valve close fully?
Gate valves seize over time as the stem and seat corrode. Forcing them often breaks the stem. The right answer is to replace with a quarter-turn ball valve.
Should I replace all my old valves?
If multiple are aged or seized, replacing them together saves on call-out cost and avoids being unable to isolate during the next emergency.
Can I replace a fixture stop myself?
If the next upstream valve works and you are comfortable with simple plumbing, yes. If the fixture stop is leaking because the upstream valve no longer holds, that is a...
Does the city need to be involved for a main shutoff replacement?
Usually no — the main shutoff inside the home is the homeowner's. The city is involved only if the meter or curb stop on the public side needs work.
Book Shut-Off Valve Replacement & Installation today.
Tornado Plumbing & Drains handles Shut-Off Valve Replacement & Installation across Toronto and the GTA. Call 647-784-8448 or book online for a clean diagnosis, written scope, and the 25-year workmanship warranty on every install and repair.