Polybutylene piping is a low-cost piping formed of plastic resin. It is commonly gray, white, or sometimes black in color. Poly piping is employed as a substitute for copper piping in both underground water mains and interior plumbing. Due to the ease of installing poly piping, it was used in the construction of millions of homes throughout the U.S. between 1978 and 1995; however, it has been discovered that as poly pipe ages and reacts with water-soluble oxidants, it begins to degrade and can leak, causing severe damage to the surrounding building structure.
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