Plastic water pipe exposed inside building footprint, hints from a home inspector
Plastic water pipe exposed inside building footprint (direct connection to potable water) (other than sprinkler lines): while some types of plastic pipe are allowed in buildings and above ground the inspector may enter this item to alert you to potential adverse conditions. Plastic pipe, when used above ground, may be especially vulnerable to freeze and breakage. Technically all plastic pipe should be buried at least 18" below the surface of the ground. This condition is often associated with sprinkler systems but may be associated with amateur plumbing. Most plastic pipe, when exposed to sunlight, can emit toxic chemicals into the drinking water. Protecting the pipe from the rays of the sun may be possible simply by wrapping the pipe with insulation. In moderate climate zones, if only a small amount of pipe is exposed, it may be acceptable to wrap the pipe with insulation foam to protect it from sunlight and freeze. It is recommended, however, that you replace the plastic pipe with metal pipe to a depth of at least 12 to 18 inches under the ground. With respect to
PVC plastic water pipes inside the building footprint it is recommended that a qualified licensed plumbing contractor review the application and make recommendations or acceptance in writing. Contact a plumbing contractor or a landscape contractor for further assistance.
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The above information was provided by TWI Systems Copyright 1995-2007 1-800-553-5660. TWI is a fantastic company to deal with!