Does it make any sense to put an adhered flashing on the exterior of a ledger board? Or is that just creating a situation where the moisture has nowhere to go if it gets in there?
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Its done all the time. Check out Henry blueskin. I beleive its vapor permeable too
Ledger as in for a deck? Most deck ledgers only have either a metal flashing to shed rainwater or you shim them out so there is space for water to pass behnind and they can dry out.
If you want to adhere check out Henry blueskin. I beleive its vapor permeable too
Thanks
Mike Guertin has a good piece on the topic. https://www.finehomebuilding.com/project-guides/decks/expert-session-flashing-a-deck-ledger