When installing step flashing on a roof-to-wall intersection in California, what is the minimum overlap requirement between individual pieces according to CBC standards?
Correct Answer
D) 3 inches overlap
CBC Section 1507.2.9 requires step flashing pieces to overlap a minimum of 3 inches. Each piece must be at least 4 inches wide with 3-inch overlap to ensure proper water shedding. This California requirement addresses the state's seismic activity and weather patterns that can stress flashing connections.
Why This Is the Correct Answer
CBC Section 1507.2.9 requires step flashing pieces to overlap a minimum of 3 inches. Each piece must be at least 4 inches wide with 3-inch overlap to ensure proper water shedding. This California requirement addresses the state's seismic activity and weather patterns that can stress flashing connections.
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