| http://www.w3.org/ns/prov#value | - At top of all exterior window and door openings in such a manner as to be leakproof, except that self-flashing windows having a continuous lap of not less than11/8 inches (28 mm) over the sheathing material around the perimeter of the opening, including corners, do not re- quire additional flashing; jamb flashing may also be omitted when specifically approved by
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