Pipe Failures in Residential Plumbing and Heating Systems

United States and Canada

Client

Merrill, Nomura & Molineux, LLP

Completion

2010
Pipe Failures in Residential Plumbing and Heating Systems
Pipe Failures in Residential Plumbing and Heating Systems
Pipe Failures in Residential Plumbing and Heating Systems

SGH investigated the cause of failures in pipes used in residential domestic hot water and hydronic heating systems in the United States and Canada.  Occurring after less than 10 yrs in service, the failures of crosslinked polyethylene-aluminum-crosslinked polyethylene (PEX-Al-PEX) pipe were characterized by blistering and splitting of the exterior pipe wall preceded by darkening and bulging of the outer PEX layer.