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Old 02-22-2008, 09:46 AM   #1
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Flashing an existing ledgerboard


I'm in a Dryvit/fake-stucco townhouse and need to install flashing where the deck ledger board meets the house on the second level. I'm thinking I will remove the deck boards closest to the house, cut into the stucco above the ledger board and install, and seal around, flashing. Seems simple enough, but would love to hear from others.....is this all there is to the job? What kind of flashing is best?
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Old 02-22-2008, 04:32 PM   #2
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Flashing an existing ledgerboard


The point of flashing is that the siding goes over the top of it to prevent water from getting behind the flashing and causing damage to the structure and the ledger. The act of only cutting the area is sort of self defeating.
To be successful you would need to install another "Z" flashing above the cut. You would slide the long leg of the flashing up and under the fake stucco providing the flashing install you need to keep water out of the section below. Then install the lower "Z" flashing and reinstall the cut fake stucco.
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Old 02-22-2008, 05:20 PM   #3
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Flashing an existing ledgerboard


Would it work or be better to affix the flashing directly to my stucco wall above the ledger board (perhaps with tar) and stucco over it?
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Old 02-22-2008, 05:31 PM   #4
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Flashing an existing ledgerboard


Sorry, but that will not work. Flashing is an integrated detail, it does not involve slathering of surface components.
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Old 02-22-2008, 05:47 PM   #5
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Flashing an existing ledgerboard


In your opinion, what should I do?
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Old 02-22-2008, 05:48 PM   #6
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Flashing an existing ledgerboard


Here's some information for you to review. Bear in mind that whether you are flashing for a roof into stucco, or a deck ledger board, the concept is the same. One difference is would pertain to the Pressure Treated Lumber.
If is older ACQ (Arsenic treated), then aluminum flashing will do. If it is new CQC (copper treated), then you need to use copper or stainless flashing, along with galvanized or stainless nails.

LINKS:

http://en.allexperts.com/q/Building-...o-flashing.htm

http://www.contractortalk.com/showthread.php?t=15121


Last edited by AtlanticWBConst.; 02-22-2008 at 05:52 PM.
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