Home inspectors

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Polybutylene Pressure Pipes


If your mobile/Mfg. home was built between the late 70's and mid 90's,

however stock piles of material were available into the late 90's.

Polybutylene water pressure pipes may have been installed, and may still be in use.

So, what is wrong about Polybutylene piping?

Simply, the material has an unusually  high rate of failure under normal operating conditions.

Deterioration linked to chlorine water additives, has been linked to the failures,

however, customers on private water supplies have reported problems.

"Poly-pipe" is gray, black or blue. Interior "poly-pipe" is almost always gray,

and the exterior type is mostly blue.

Polybutylene pipe connectors can be copper, brass or plastic.


Types of Pipe used today


Rigid plastic PVC (polyvinyl chloride) and ABS (acrylonitrile butadiene styrene)

are the most popular types of plastic plumbing pipe.

PVC is usually white or cream colored and ABS is black.

Both are typically used only for vents and drains and aren't made to fit directly together.

CPVC (chlorinated polyvinyl chloride) is another rigid plastic used for hot and cold water supply lines

because it can handle normal water pressure loads.

Compared to copper lines, CPVC is lightweight, easy to work with, doesn't corrode and may be priced about 3/4ths less.