a wrote:

a wrote:
SteveBell wrote:

Put a z-flange (also called a drip cap) on top of the ledger so
water doesn't run behind it. It will last longer.

Thanks! How does one butt joists and lay the "decking" if there's
a flange over the ledger?

I guess a pic might help... looking...

OK - I get it... but there's plenty of overhang over the ledger
anyway - original shingles + foam + vinyl siding. The ledger wood
itself is good - the nails must have rusted from years and years of
atmospheric exposure. I think the ledger is original to the house.

Some of the water you need to worry about is condensation from behind
the shingles, foam, and siding. It comes down when the weather is just
right--or just wrong. :-)

The flashing is supposed to go behind all the exterior wall covering,
including the vapor barrier. That way, any condensation won't be
trapped behind the ledger.

--
Steve Bell
New Life Home Improvement
Arlington, TX