I have a existing improperly installed deck attached to the house which I am retrofitting. I already have a permit approved but not sure how to flash the existing ledger board without removing the entire structure. Is there a way to flash this to keep out moisture? Currently there are parts that are attached with a ledger and some that is not.
@trebor nirom , sorry I did not see your comment was going through old questions and found it. One product I have used is “cop-r-shield” it is thin copper some what easy to form but more expensive than the “tight seal” aluminum flashing tape that I regularly have used. The aluminum is thin so if poked with a stick it can be punctured I pressed it tight up under the siding and down the wall then over the ledger. It lasts and did the job on that deck , no more water getting in the walls. The copper cost ~40$ for a roll and the aluminum is ~10$ other than one of my kids poking holes in a section it has held up for close to 20 years. Where the holes were poked through I added another layer about 6” wider on each side, it will stick to itself.