What is the minimum thickness of plastic sheathing required to prevent direct contact between copper piping and concrete?

The minimum thickness of plastic sheathing required to prevent direct contact between copper piping and concrete is specified in the International Mechanical Code to ensure the longevity of the piping. Copper can corrode when in direct contact with concrete due to the alkalinity of concrete and moisture, leading to potential pinhole leaks and failures over time.

A thickness of 0.0008 inch is deemed sufficient to provide a protective barrier that prevents this interaction, while also being practical for installation. The thickness is designed to be rigid enough to maintain its integrity under typical pressures and mechanical handling during and after installation. It is important for anyone handling copper piping to be aware of these specifications to avoid potential damage caused by corrosion from concrete, ensuring a reliable and durable installation.