I started to lay tile in the bathroon around the tub area walls. I ended up
breaking a tile when I screwed the water spout back on and just noticed it
this morning. I decided to take the tile off becuase it was still somewhat
wet/dry. I ended up taking off part of the plaster wall. Actually to be
precise I took off about 1/8 inch of plaster skim coat that was sitting on
top of the plaster. Now I have bare plaster and need to put the tile back
on. But my problem is I don't know if the bare plaster should be treated
with something to withstand moisture. I heard that plaster of Paris would
do the trick. There no way I can re-do the whole way with new sheetboard.
The whole bathroom wall around the tub is all tiled. I am wondering what to
do. Can I just tile over the old plaster? The old plaster is hard, but if
I scrape it, it will turn sandy and be brittle. I have about 1/2 - 3/4 inch
of thickness for the wall and the old plaster is covered with an old wire
mesh. I was also thinking that oil paint will seal it. Maybe I don't have
to seal it.

Take a look for a better idea.
http://pg.photos.yahoo.com/ph/uk69uk19/album?.dir=/a94f

Pic 2 of 4 is with the 1/8 skim coat of old plaster that I took off. Most
of it was alrady off when I pulled the tile off.

I also need to back the pipe that is sticking out of the wall but it is in
there really tight and I will mess the threads up if I grip it with a pipe
wrench. Any ideas on how to get this out. I already sprayed it with wd-40.
I need about another 1/4 inch from the wall so when I screw the spout back
on it doesn't crack the tile again.


Any advice?