Do you know why we use PVC pipes when upgrading old plumbing systems?
New schedule 40 PVC pipe was installed on this project to replace old leaking copper drain lines that were preexisting in this home. Polyvinyl Chloride (PVC) piping is now the most widely used plastic piping material. PVC is a thermoplastic made of 57% chlorine (made from industrial grade salt) and 43% carbon (derived mostly from oil / gas via ethylene).
PVP piping is preferred nowadays because it’s quite smooth on the inside and naturally transfers waste products with greater ease and fewer possible issues on its way to it’s ultimate destination — either a septic tank or city sewer system.
Older piping such as copper may develop green spots. This indicates corrosion and pin holes appear over time, which causes leaky pipes.