What type of flashing is preferred to use behind brick in a wall?

Copper flashing is preferred behind brick in a wall primarily due to its superior durability and resistance to corrosion. When installed properly, copper can last for decades without significant degradation, making it a long-term solution for moisture management in masonry construction. It provides a reliable barrier that prevents water from penetrating the brickwork and reaching the structural components of the wall, which could lead to moisture damage and deterioration over time.

Additionally, copper has the advantage of being malleable, allowing it to be easily shaped and fitted in various configurations to ensure effective water drainage. Its ability to resist the effects of environmental factors, such as acid rain and alkaline brick, further enhances its longevity and effectiveness in this application.

While other materials like aluminum and plastic may be used in some cases, they do not offer the same level of longevity and resistance to the elements that copper provides. Wood is not suitable for this application due to its vulnerability to rot and decay when exposed to moisture. Thus, copper is the ideal choice when it comes to flashing behind brick walls.