Repiping an older house – Poly-B to PEX

Photo by: John G Plumbing Inc.

If you are looking for a plumber who specializes in replacing poly-b piping then your search is over!

We at John G Plumbing Inc have been doing countless projects over the years removing POLY B PIPING and changing it to PEX piping. We have repiped several multi-residential buildings and multiple suite detached houses as well. We have also repipied countless single dwelling homes; including those homes where homeowners who could not get their homes insured because of the poly b pipes.

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If you are looking for a Local Trusted Repiping Company we are here to help

Polybutylene pipes aka Poly-B

Polybutylene pipes were manufactured from 1985 until 1997.

If your home was built before 2000, there’s a good chance that the plumbing is made of polybutylene (poly-b). This material was once popular for water lines because it was affordable and durable. However, over time it has been found to be susceptible to leaks, which can cause extensive damage to your home.  In 2005, they were banned from being used in residential and commercial construction because they often leaked after 10 to 15 years.

Repiping with PEX

If you’re concerned about the safety of your home and you want to install a new piping system that will last for many years, repiping with PEX is most likely the best option for you. 

In this blog post, we’ll discuss the process of re-piping an older house from poly b piping to PEX and what you can expect from the project.


John G Plumbing is a trusted local
Repiping company in Nanaimo


The homeowner of this house called us with a concern of multiple failures and a pipe burst of one section that resulted in damaging the drywall in his boiler room.

We fixed the burst pipe and learned that the existing piping is poly-b. We immediately advised the customer to look into long term solutions and to replace the  poly-b piping in order to avoid further damages.


If you want someone that can do a professional job and completely re-plumb your house then give John G Plumbing Inc a call: one of our dispatchers will answer the phone and we’ll get you booked.


We can normally get you scheduled in relatively quickly to get that house repiped and to make sure that your plumbing is in good working order.

The poly b replacing process is simple:


You call us – we come and inspect your plumbing system then we provide you with a free estimate. At the time of the initial inspection we will advise you where the drywalls – if necessary -will have to be opened and give you a general idea of how long the project will take. 

After the acceptance of our quotation, we schedule the time to perform the work.We show up as scheduled and start the repiping.

Our approach is to do the repiping without lengthy (daily) water shut-downs; we aim to the repiping “dry”: put the new piping in then cut the old ones. If it is not possible we always make sure that at the end of each working day the customers are never left without water . In this case we need to start with cutting the old ones out and install the new ones after.

Once the new Pex pipes are installed you can expect many years of worry-free use.

We service Nanaimo, Parksville, Qualicum Beach and the surrounding area

(250) 797-0858
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