Warning! A significant percentage of homes built between 1978 – 1995 have a defective water supply piping system made of polybutylene plastic. This material is no longer approved for use and has a much higher than normal failure rate. In other words, homes plumbed with polybutylene are likely to have a future flood event! Ask any veteran plumber about polybutylene water supply piping and they will advise you to re-pipe the entire house. This can be done, but it’s a costly and messy job.
Solution: don’t buy a house that has polybutylene water supply piping. Or at least make sure you know before hand. Unfortunately, even seasoned home inspectors often can’t tell what the water supply piping is! Per industry standards of practice, inspectors are only required to report on the visible water supply piping observed. It’s very common for all the polybutylene piping to be hidden inside of the wall cavities (see picture below). Luckily, the owner of our company developed a patented method for verifying whether or not plastic water piping is present. This unique and patented service is included at no extra charge on all inspections we perform (and is available as a stand-alone service). We will come out and test the pipes without making any holes or inflicting any damage on the home.