Renovation
Galvanized, Copper, or PEX: What Kind of Pipes Does Your Toronto Home Have?
Most pre-1960s Toronto homes started with galvanized steel supply pipes, homes built from the 1960s through the 1990s typically have copper, and PEX plastic has become the common choice for repairs and renovations since the 2000s.
Most pre-1960s Toronto homes started out with galvanized steel supply pipes, homes built from the 1960s through the 1990s typically have copper, and PEX plastic tubing has become the go-to choice for repairs and renovations over the last couple of decades. You can often guess what's behind your walls from your home's build era, though the only sure way to know is to look at an exposed section in the basement, or have a plumber check. The three materials age very differently, so if you're planning a renovation or dealing with recurring pressure or leak problems, knowing what you're working with changes the conversation.
How can I tell what kind of pipes my house has?
Look at exposed pipe near your water heater, water meter, or in an unfinished basement ceiling. Galvanized steel is dull grey and magnetic — a fridge magnet will stick to it — and often shows rust staining or a pitted surface. Copper is reddish-brown, or dull brownish-green if tarnished, and isn't magnetic. PEX is flexible plastic tubing, usually red, blue, or white, sometimes with printed labeling. If you can't easily see a pipe run, a plumber can usually confirm the material during any other visit.
Why does galvanized steel piping cause problems in older Toronto homes?
Galvanized steel pipe corrodes from the inside over the decades, and that buildup narrows the pipe's opening and eventually starts flaking off as rust. That's the mechanism behind a common pattern in older Toronto neighbourhoods with a lot of pre-1960s housing stock, like parts of the Beaches, Leslieville, and older stretches of the west end: gradually dropping water pressure that isn't explained by a single leak, plus occasional rust-coloured water after the plumbing sits unused for a while, such as after a vacation. The corrosion doesn't reverse on its own, and most of these systems are now well past their typical working life.
Is copper piping still a good material, or does it need replacing too?
Copper is generally durable and long-lasting, and doesn't need replacing just because a home has it — plenty of copper systems installed decades ago still work fine. Watch for pinhole leaks, which can develop over time from water chemistry or stray electrical current in the ground, and green-blue staining around joints, which points to a slow leak at that fitting rather than a problem with the pipe itself. Copper showing pinhole leaks in more than one spot is worth having a plumber assess as a system, rather than patching leak by leak.
What is PEX, and why do plumbers use it so often now for repairs?
PEX is a flexible plastic tubing that's become common because it resists the corrosion and pinhole leaks that affect metal pipe, it's more forgiving of Toronto's freeze-thaw winters since it has a bit of give if water inside it freezes, and its flexibility lets a plumber snake it through existing walls with far fewer joints and cut-outs than rigid pipe needs. That makes it practical for both full repipes and smaller repairs, like swapping out a corroded galvanized section without opening up an entire wall. It's had a solid track record in North American plumbing for years now, though like any material it depends on correct installation.
Should I replace old galvanized or aging copper pipe before a renovation?
If you're already opening up walls or a ceiling for a kitchen, bathroom, or basement renovation, it's worth having a plumber look at what's behind that section first, since accessing the same run again later means opening the wall a second time. Full-home repiping depends on the pipe's condition, your budget, and whether you're seeing ongoing symptoms like pressure loss or repeat leaks rather than just the pipe's age on paper. A plumber can typically camera-inspect accessible sections during a visit — GetFixHero's published range for main line snaking with a camera is $300–500, a reasonable starting point before committing to a larger repipe.
Frequently asked questions
Does galvanized pipe need to be replaced right away if my home still has it? Not necessarily as an emergency, but it's worth having a plumber assess it, especially if you're noticing dropping pressure or rust-coloured water, since the corrosion inside galvanized pipe only progresses over time.
Can PEX and copper pipe be connected together in the same system? Yes — plumbers regularly transition between PEX and copper using standard fittings, which is part of why PEX is often used for partial repairs and additions to an existing copper system rather than a full replacement.
Is renovation plumbing work in Toronto something I need a permit for? Plumbing work that alters or extends the piping system generally requires a permit and needs to be done by a licensed plumber under the Ontario Building Code — check with the City of Toronto's building division for what applies to your specific project.
Knowing what's behind your walls before a renovation saves you from opening them up twice — request a plumber or message us on Facebook. Free for homeowners, care of GetFixHero.
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