Sorry, I'm slightly confused here. Are you saying that the deck is
built directly on the roof of the kitchen? And then saying that the
kitchen ceiling is now leaking? If that is the case you have more
serious issues than just a leaky deck. If it was built that way (why
would they do something so silly?) then you are probably looking at
replacing the roof and then building a new deck on top of it. The roof
and the deck need to be built seperately, not as one. There should be
an air gap between the roof surface and deck to allow for air movement
and good drainage of water. If this isn't done, you will at the very
least, get a rot problem.
wrote:
I have a small (stone tile) deck off of a second-story master bedroom.
It leaks (into the kitchen below) when it rains. I've called about ten
different people to try to get it fixed. No one wants to do it. I
think I am going to have to fix it myself.

I am not handy.

The various repair people who have come to the house are split: Half
say I need to retile. Half say it needs to be waterproofed.

How does one go about waterproofing a leaky deck?

thanks in advance for any wisdom you have on this.