There is a space between my Bilco door and the concrete foundation that
is about 3 inches wide. Between the door and the foundation is wood and
unfortunately it leaks quite a bit there. The previous owners (there for
20 years) said it leaked maybe twice. Bull.

I know it wasn't a definitive fix but I tried caulking above it to
prevent the rainwater from seeping down. I can't seem to get it right
though. So I was thinking of cleaning it up as best I could from
underneath and using hydraulic cement (with gloved hands). It would
overlay surfaces made of cement, wood, and metal, in that order.

I don't really like this solution because the water will continue to rot
the wood, even though it may not leak into the basement. But outside of
removing the whole Bilco assembly and part of my deck, I don't see any
way around it.

As usual, any advise is much appreciated.

thanks,
bonnie