As the use of plastic piping (such as ABS, CPVC, PE and PVC) in construction gained popularity, considerable testing and research took place to address issues related to fire performance. Likewise, installation technologies and building codes governing the use of plastic have evolved considerably as performance warranting its use was demonstrated for applications in more demanding building types and occupancies. Consistent with the preceding, that evolution can be traced by comparing descriptions of early technology and regulations related to plastic pipe use1,2 with the current state of the art, as reviewed here.