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February 24th, 2012 at 8:07 am

Coping – Metal Cap Flashing – Built-up Roof

Coping is the covering piece on top of a wall which is exposed to the weather, usually made of metal, masonry or stone. It is preferably sloped to shed water back onto the roof. Metal flashing are  accessory components fabricated from sheet metal and used to weatherproof terminating roof covering edges. Most frequently used as though-wall flashing, cap flashing, counter flashing, or step flashing.

ROOFING 101 – Metal cap flashing functions best when the top surface of the cap slopes inward to drain water toward the interior of the building. Avoid installation of fastners on the horizontal surface of the metal cap flashing.

For localized leaks you will need to replace damaged, missing or severely corroded sections or joint covers. Next refasten loose clips and any unsecured sections of metal using fastners of sufficient length and either of a larger diameter or fastnened to an adjacent location. Then you will need to clean and reseal any open joints with polyurethane sealant.

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