I'm about to tile my bathroom. The cross section of the room looks something
like this (please view in fixed width font!)
_____
| \
| \
| \
| |
| |
| |
| |
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Essentially, there is a sloping bit of ceiling which is unfortunately above
the bath/shower. Which means I'm going to have to tile at least some of it.

Has anybody got any experience of tiling something like this? Do I need to
take any extra steps to ensure that the tiles don't all fall off, or will
standard tile adhesive be ok?

Thanks,
Jon