Which material is appropriate for roof flashing?

Copper is an excellent choice for roof flashing due to its durability, corrosion resistance, and long lifespan. It can withstand harsh weather conditions without deteriorating, which is essential for maintaining the integrity of a roof. When properly installed, copper flashing can protect vulnerable areas of the roof from water infiltration, ensuring that the seams and joints remain watertight. Additionally, copper develops a patina over time, which enhances its aesthetic appeal while providing further protection against oxidation.

Other materials, such as aluminum, plastic, and steel, may also be used for flashing, but they have limitations in terms of durability or performance under certain conditions. For instance, aluminum can corrode over time when exposed to certain elements, and plastic may not provide the desired longevity or structural integrity necessary for a reliable roof flashing solution. Steel is often treated to prevent rust, but it can still be susceptible to corrosion without proper care. Copper stands out as a superior option, making it a preferred material for high-quality roof flashing applications.