Flashings are typically located at which of the following areas?

Flashings play a crucial role in directing water away from areas of potential leaks on a building’s exterior. They are essential at various locations where different building elements intersect or where there is a change in material.

In valleys, which are the low points where two sloping roof sections meet, flashings help channel water and prevent accumulation that could lead to leaks. Likewise, at roof penetrations like chimneys, vents, or skylights, flashings are used to ensure that water does not seep in through the gaps surrounding these elements. Finally, at intersections with other materials—such as where a roof meets a wall or where different roofing materials overlap—flashings provide a barrier against water intrusion.

Using flashings in all these areas ensures a comprehensive waterproofing strategy, making it clear that they are indeed applicable in all the mentioned situations. Therefore, the correct answer encompasses all of these crucial locations, highlighting the importance of flashings in effective building construction and maintenance.