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Flashing around a masonry chimney consists of two parts: base flashing, which is attached to the roof, and _____ _______ or counter flashing, that is attached to the chimney.

A. Roof flashing
B. Top flashing
C. Counter flashing
D. Ridge flashing

Answer :

Final answer:

Flashing around a chimney includes base flashing and c) counter flashing, where counter flashing is the correct term for the part attached to the chimney. This system prevents water penetration at the chimney and roof intersection.

Explanation:

Flashing around a masonry chimney consists of two parts: base flashing, which is attached to the roof, and counter flashing or counterflashing, that is attached to the chimney. The correct answer is c) Counter flashing. This two-part approach is essential in preventing water penetration at the point where the chimney penetrates the roof. The base flashing serves as the first layer of protection by directing water away from the chimney and onto the roof surface. The counter flashing, then, is embedded into the chimney mortar joints and overlaps the base flashing, creating a barrier that water cannot penetrate. This method ensures that water is effectively redirected away from the chimney and roof, safeguarding the home against leaks and water damage.

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