In by Jackie Dunn

A material (typically, metal) that is shaped or molded for the location and used at an angle in a roof or wall to prevent rainwater/moisture leakage into the structure.

Merriam-Webster Online Dictionary
flashing (noun)
sheet metal used in waterproofing (as at roof valleys or hips or the angle between a chimney and a roof)
flashing (Wikipedia)

Flashing may refer to:

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