Answer :
Final answer:
Metal flashing is used where a chimney and roof meet. It comes in two parts, the base or step flashing, and the counter flashing, and its function is to prevent water leakage at this intersection.
Explanation:
The type of flashing used where a chimney and roof meet is metal flashing. This is important in construction to prevent water leakage around the intersection of the chimney and the roof. The metal flashing is designed to direct water away from the seam and usually comes in two parts: the base or step flashing, and the counter flashing. The base flashing is what goes onto the roof and up against the chimney, while the counter flashing is embedded into the mortar joints of the chimney and then folded down to cover the base flashing.
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