Which flashing is critical for the absorption of rainwater at roof and wall intersections?

Kickout flashing is particularly crucial at roof and wall intersections because it directs rainwater away from the wall and into the gutter or drainage system. This type of flashing helps to prevent water from running down the wall, which can lead to moisture penetration and potential damage to the building's structure. By channeling water away effectively, kickout flashing plays a vital role in safeguarding the integrity of both the roof and the wall, ensuring that they work together to manage drainage efficiently.

Other types of flashing, such as ridge flashing, valley flashing, and counter flashing, serve specific purposes but are not as essential for managing water flow at the intersection of the roof and wall. Ridge flashing is primarily used at the peaks of roofs to cover the joints between roof sections. Valley flashing is installed in the low points where two roofs meet, directing water away from these vulnerable areas. Counter flashing is used to cover elements like chimneys and walls that project through the roof plane, providing a barrier against water intrusion. Each of these flashings is important in its context, but kickout flashing is uniquely designed for handling the critical intersection where a roof meets a wall.