Flashing is used to prevent water seepage around which areas?

• A. Intersections or projections in a roof, such as vent pipes, chimneys, and dormers.
• B. The surface of shingles for color.
• C. The inside ceiling.
• D. The attic rafters.

Answer: (A)

Flashing provides a watertight seal where the roof planes meet or where something penetrates the roof. That’s why it’s used around intersections or projections like vent pipes, chimneys, and dormers. By bridging the gap and directing water away from these joints and under the shingles, flashing prevents seepage into the roof structure. It isn’t about changing the color of the shingles, nor is it installed on the inside ceiling or on attic rafters; those areas aren’t the exterior joints that flashing is designed to protect.