Flashing against a vertical front wall, as well as soil stack, vent pipe and chimney flashing, shall be applied in accordance with the asphalt shingle manufacturer's printed instructions.
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Joints at the roof and around vent pipes shall be made water tight by the use of lead, copper, galvanized steel, aluminum, plastic or other approved ...
Flashings shall be installed in a manner that prevents moisture from entering the wall and roof through joints in copings, through moisture permeable ...