Flashing ::
Flashing (n.)
Pieces of
metal, built into the
joints of a wall, so as to lap over the edge of the
gutters or to cover the edge of the
roofing; also,
similar pieces used to cover the
valleys of roofs of
slate, shingles, or the like. By
extension, the metal
covering of
ridges and hips of
roofs; also, in the
United States, the
protecting of
angles and
breaks in walls of frame
houses with
waterproof material, tarred paper, or the like. Cf.
Filleting..