Answer :
Final answer:
The type of flashing used where the edge of a shingle roof meets a vertical wall is called Step flashing. It is crucial for protecting roof intersections from water penetration. Other types of flashing are used in different roofing scenarios.
Explanation:
The term for the type of flashing used where the edge of a shingle roof meets a vertical wall is C) Step flashing. In the process of roof construction, step flashing is an essential element that ensures protection from water penetration at the junctions or joints where a roof intersects with a wall. It is arranged in a pattern of 'steps' along the intersection of the wall and roof, hence its name. Each individual piece of step flashing aligns with each course of shingles for optimum water diversion. Other types of flashing, such as counterflashing, kickout flashing, and valley flashing, are used in different scenarios and areas of the roof.
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