Flashing should be installed how many inches beyond the interior face of the exterior wall for slopes less than 4:12?

Flashing is a critical component in roofing and siding installations, functioning to direct water away from vulnerable areas and prevent moisture intrusion. When it comes to slopes that are less than 4:12, it is essential to extend the flashing adequately beyond the interior face of the exterior wall to safeguard against water penetration.

Installing flashing a minimum of 24 inches beyond the interior face provides sufficient coverage to channel water effectively. This distance is particularly important in low-slope applications, where the likelihood of water pooling is increased. By having the flashing extend this far, the potential for water to seep behind the wall assembly is significantly reduced, ensuring a better defense against leaks and water damage.

This standard is widely recognized in building codes and best practices, emphasizing the importance of a proper installation to maintain the integrity of the structure over time. The other options provide insufficient coverage, which might result in vulnerabilities that could lead to moisture issues. Hence, 24 inches is the ideal measurement for effective flashing in these specific scenarios.