deck ledger flashing to vertical siding

Oct 18, 2006 Last reply: 3 years ago 5 Replies
M

Looking for some help with proper flashing of a deck ledger board. Siding construction consists of vertical smooth panels mounted directly to wall studs with no intermediate sheathing. I have found several good examples of flashing techniques that involve siding-over-sheathing construction, but none that demonstrate how to properly attach and flash the ledger board over the single layer vertical panels.



I could adapt a solution from the several very good diagrams I have seen, but as this is a replacement project that was made necessary due to wet and rotted rim joist behind the old ledger board, which was mounted to the rim joist through the siding with no flashing. I am nervous about getting it right and would appreciate any helpful ideas that anyone might be willing to share.



Thanks for any help you can provide.



Mike



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Y

I guess you have to pry the siding out and slip the flashing up under the siding. Go as high as is practical, since any buildup of water would get right into the wall cavity. Maybe a nice 12 inch piece of copper 9

1/2 inches up the studs, over the ledger and down an inch. One piece, no seams. don't nail the siding in the bottom 6 inches.
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H

Thkere really is no good option other than correct installation.That calls for the flashing to extend up the wall _under_ the siding. If that cannot be done then you are stuck with "rednecking" it with liberal use of caulking, etc.

Harry K

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M

Thanks for the reply, Harry.

I agree that the only option is a correct installation. I just can't see how to do it without sheathing behind the siding. So, what would be the technique to flash it if mounted over the siding? Cut a kerf across the siding above the ledger and insert the flashing behind the siding and over the ledger?

Thanks again for taking the time to reply.

Mike

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H

That would be my approach. The flashing isn't going to be supported between the studs but it shouldn't really be a problem. Use a fairly thick gauge of flashing if you have a choice.

Harry K

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H

Running into a similar issue. How did this turn out?

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