Was your Calgary home built between 1979 and 1995? If yes, chances are you have polybutylene pipes running behind your walls. You shouldn’t be wondering if they will fail, you should be wondering when they will fail.
Poly-B (short for polybutylene) is a grey or sometimes white plastic piping material that was used in Canadian homes from the late 1970s to the mid-1990s. See dull grey plastic pipes in your Calgary basement or under the bathroom sink? You probably have polybutylene plumbing.
It was a favourite among builders because it was cheap and faster to install than copper. Unfortunately, this material doesn’t mix well with chlorine or other oxidants in municipal water. This problem is widespread across the city, but almost no one knows about it.
Poly-B pipes are more vulnerable to scale buildup, micro-fractures and sudden bursts after years of contact with chlorinated water. Because the damage happens inside the pipe, you can’t see it. Calgary homeowners usually only find out they have polybutylene pipes after a leak floods the finished basement, warps hardwood floors or destroys cabinets.
The longer the pipes stay in place, the bigger the risk. Insurance companies are catching on as well. Several insurers in Alberta either refuse to cover homes with active polybutylene plumbing or charge much higher premiums.
When buying or selling Calgary real estate, these pipes almost come up during any home inspection, quickly derailing or delaying sales.
Wondering if you have these pipes? Watch for the signs:
Even pipes that look fine might have something going on under the surface. Poly-B fails from the inside out. A professional inspection by a licensed plumber is the only way to know how much life is left in your pipes.
Calgary Poly-B replacement costs depend on the home size, fixture count and how accessible the piping is. A small bungalow with an open basement is on the lower end. A two-storey home with finished walls and multiple bathrooms sits higher.
Replacement costs depend on:
Mr. Mike’s Plumbing offers free, no-obligation quotes for every Poly-B replacement project in Calgary. We walk through your home, identify every run of polybutylene and provide a clear price before we start work.
Replacing Poly-B goes beyond a patch job—it’s a full repipe. Here’s how we approach it:
We visit your home, identify all polybutylene piping and map out a replacement plan. You’ll get a written quote without pressure to commit on the spot.
Most Calgary homeowners choose PEX because of its cost and flexibility or copper for longevity and resale value. We help you weigh the pros and cons of each so we can recommend what makes sense for your home and budget.
We open as little drywall as possible, planning out each access point to reduce finishing costs. On most jobs, we’re able to avoid main living areas entirely.
Our experienced plumbers systematically remove every inch of Poly-B and replace it with new piping run to current code. There’s no leaving sections to “save time” as incomplete jobs bring leaks two years later.
Every fitting and run is pressure testing before walls are closed. We clean up after ourselves and leave the home ready for drywall and paint.
When it comes to Poly-B replacement, Calgary homeowners have plenty of options. That said, not all of them are equal. Here’s what makes us different:
Planning ahead, prepping a home for sale or dealing with an active leak? Our team treats Poly-B replacements as a project worth doing right, not a quick fix.
Replacing polybutylene requires working with the main water supply and multiple fixtures while meeting Calgary’s plumbing code requirements. This isn’t a job for a handyman or unsupervised apprentice. Red Seal is the highest plumbing certification in Canada. It confirms a plumber has passed national exams and meets the standard for journeyman-level work in every province.
Every technician from Mr. Mike’s plumbing carries this credential. It’s important for insurance. Most Alberta insurers require proof the replacement was done by a licensed professional before honouring any plumbing failure claims.
Poly-B replacement costs in Calgary vary greatly. The final price is based on the home size, number of fixtures, accessibility of existing pipes and if you choose PEX or copper as the replacement material. Mr. Mike’s provides free written quotes for every project.
Poly-B was originally marked as lasting 25 years, but this doesn’t necessarily pertain to how it works in the real world. Installations often start having problems between 10 and 25 years after installation. If your Calgary home was built between 1978 and 1995, your polybutylene is already at or past its high risk window.
A single Poly-B failure can release hundreds of litres of water in minutes. Damaged basements, ruined hardwood and laminate flooring, soaked drywall, mould growth behind walls and damaged electrical systems aren’t uncommon. Repair and restoration costs for major leaks usually exceed the cost of a full replacement.
Modern PEX and copper piping resist chlorine, handle temperature changes better and last over 50 years with proper installation. They meet insurance requirements, qualify for standard premium rates and don’t drag down the value of your Calgary home during resale.
Yes, polybutylene replacement involves working with the main water supply, multiple fixtures and meeting Calgary code requirements.
We recommend a full replacement. Leaving sections in place doesn’t get rid of the failure and partial jobs tend to cost more in the long run when remaining sections fail. However, we’re happy to discuss phased options if you’re on a budget.
Some drywall work is hard to avoid, but we plan access points strategically to reduce damage. Generally, most Calgary jobs need 8-15 small access cuts that can be patched and painted in a day or by a drywall finisher.
If you’ve been putting off Poly-B replacement, consider that every year you wait is one year closer to the leak. Keep in mind that cleanup costs often exceed the cost of the repipe.
Mr. Mike’s Plumbing offers free in-home inspections and quotes for Calgary homeowners. We’ll show you what’s behind your walls so you have a clear path forward.
Call (403) 520-2040 or request a free quote online. Dealing with an active leak right now? Visit our emergency plumbing in Calgary page or call us 24/7.
Learn more about pipe repair and replacement or browse our full list of plumbing services across Calgary and surrounding areas.
