How far above a residential chimney must copper equipment be lead coated?

The standard for the lead coating of copper equipment above a residential chimney is typically established as a distance of 2 feet. This requirement is based on various safety regulations and best practices within the field, which ensure that the protection system effectively mitigates the risk of lightning strikes and electrical surges.

When copper equipment is lead coated, it helps to maintain the integrity of the materials used in lightning protection systems, especially at their highest points. By having the coating extend 2 feet above the chimney, it provides adequate coverage to prevent corrosion and ensures that the equipment maintains conductivity, offering better protection against lightning. This is particularly important in locations that experience frequent thunderstorms, as an unprotected or poorly protected system may lead to failures during a lightning event.

Maintaining this height also aligns with applicable codes and standards that govern lightning protection systems. Therefore, a 2-foot lead coating helps to ensure compliance while maximizing safety and functionality.