Leak Repair & Pipe Replacement · Cambridge
Leak Repair and Pipe Replacement in Cambridge
A leak is a symptom. In an old Cambridge house the question is whether you are fixing one joint or whether the whole run has reached the end, and the answer decides how you spend the money.
Cambridge has more old pipe per house than almost anywhere in the Region, because Galt, Preston and Hespeler were substantial towns long before the city existed. That means leak calls here are as often about replacement as repair. The plumber's first job is to work out which one you have.
Galvanized steel supply lines
Galt's stone and brick houses, the older streets of Hespeler and the pre-war parts of Preston were plumbed in galvanized steel. It rusts from the inside out. The bore closes up with corrosion until the pressure upstairs is a trickle, the threads at the joints thin out until they weep, and the water runs brown after it sits overnight. A galvanized line can be patched at a leaking joint, and sometimes that is the right short-term call. But a house with one leaking galvanized joint has a hundred more, and the sensible plan is replacement — in stages if the budget needs it, starting with the main from the entry point up to the risers, then the branches as walls and ceilings open for other work. Copper or PEX, depending on where it runs and what it connects to.
Cast-iron drain stacks
The main stack in a century house is cast iron, and cast iron fails two ways: it rusts thin along the bottom of horizontal sections until it channels, and it cracks along the hub joints, often where someone once hung something from it or where the house has settled. The symptom is a stain on the ceiling below the bathroom that comes and goes, or a sewer smell in a room with no drain. Replacing a stack means opening walls, and it is best done alongside a bathroom or kitchen renovation when the walls are open anyway. It is permit work through the City of Cambridge.
Copper, PEX and the mid-century houses
Preston's post-war bungalows and the 1960s and 70s streets across all three towns are mostly copper, and copper is good pipe. Its failures are pinhole leaks from years of hard water and, occasionally, from a bad batch or an electrical grounding problem, plus frozen and split sections behind outside taps. A pinhole is a repair. A run with several pinholes is a replacement. Some houses from the late 1970s to mid-1990s were plumbed with grey polybutylene, which fails at the fittings and is worth replacing before it does; insurers increasingly ask about it. The newest subdivisions off the 401 and north Hespeler are PEX, which is reliable, and the leaks there are almost always a builder's crimp that was never right.
Water service lines and shut-offs
The service from the street to the house is the pipe nobody thinks about until the front lawn is wet in August. In the oldest parts of Galt it may be galvanized or, in a few cases, lead; in mid-century houses it is copper; in new ones it is plastic. The homeowner is responsible for the section on their side of the property line, and replacing it is a dig or a pull, quoted after we know the run. Inside the house, the main shut-off in an older home is often a gate valve that is seized or does not seal. Replacing it with a quarter-turn ball valve is a small job that you will be very glad of during your next emergency. The same goes for the stops under every sink and toilet.
Backwater valves on the low streets
Houses near the Grand in Galt and Preston and along the Speed in Hespeler can have the sewer surcharge into the basement in a heavy storm. A backwater valve on the main sanitary line stops that. Installing one means cutting the basement floor at the main drain, setting the valve with access for cleaning, and a plumbing permit and inspection. The City of Cambridge and the Region of Waterloo have at various times offered help with the cost of flood-protection plumbing; check with the city for what currently applies. Note the boundary: the valve, the floor drain and a sump pump are plumbing. Water coming through the wall or the slab is waterproofing, which is a different trade, and the Grand River Conservation Authority is the source for flood-risk information along the river.
Finding the leak
A water bill that has jumped, a meter that spins with every tap off, a warm spot on a basement slab, or a ceiling stain with no obvious source. Leak detection starts with the cheap tests: isolating fixtures, listening, checking the toilet flappers that account for a surprising number of high bills. Then it moves to opening a small section of ceiling or wall where the evidence points. The plumber tells you what was found and what the options are before anything more is opened.
How a re-pipe is quoted
Someone comes and traces the system: where it enters, what material, how many fixtures, where the walls are open and where they are plaster. The quote is broken out by stage so you can do the main now and the branches later if you need to, and it says what patching is included and what is not. Water is off for a stated period, usually a day for a typical house, and back on with a working bathroom before the crew leaves each day.
Frequently asked questions
Do I need to replace all my galvanized pipe at once?
No. The sensible order is the main line from the entry to the risers first, because that fixes most of the pressure problem, then branch lines as walls open for other work. A single leaking joint can be patched to buy time. What does not work is patching joint after joint for years; at some point the patches cost more than the pipe.
Is a backwater valve plumbing or waterproofing?
Plumbing. It goes on the sanitary drain and stops the sewer surcharging into your basement. Water coming through the foundation wall or up through the slab away from a drain is a waterproofing problem and a different trade. We install backwater valves, sump pumps and floor drains; we do not do membranes or foundation cracks.
My house has grey plastic pipe. Is that a problem?
If it is polybutylene, from roughly the late 1970s to mid-1990s, it has a history of failing at the fittings, and many insurers ask about it. It is worth replacing on your schedule rather than the pipe's. Grey PEX is a different product and is fine. The plumber can tell you which one you have from the markings.
Serving Cambridge and surrounding areas. Contact us for a no-obligation quote specific to your property.