Does aquatherm pipe still require insulation?

PP-R has a natural insulation value, which can allow for a system to use less insulation than it would have with metal pipes or even other plastics. However, in some applications, insulation will still be required. It is up to the engineer on the project to determine how much insulation will be installed and where. Unless an area is exceptionally humid, aquatherm recommends not insulating domestic cold water piping.

aquatherm pipe should be installed with insulation following the same ASHRAE standards as steel or copper. In hot water applications it is sometimes possible to leave the fittings uninsulated as the pipe has a natural R value of 1.4 per inch of material. The overall heat loss with the fittings uninsulated in some cases may be equal or less than insulated steel or copper.