I'm tackling a small upgrade/repair in my master bath shower. Replacing the old faucets with a new single knob unit. Have removed and saved most of the tile (some broke and need to be replaced), and removed cement backing, plaster, and metal lath. Next step is shutting the water off and draining water pipes, removing the old faucets, cutting some new pieces of 1/2" copper to connect the new unit, sweating all the connections, and then turning the water back on temporarily to flush out any crap in the pipes so no dust or dirt in the new plumbing and fixture. Then to the tile store to try to match up new tile as best I can, get some metal lath or rock lath, some plaster, and some cement to reset the tiles. Also, SWMBO want some new shelves so I'll get some marble shelves and set them in the wall when I set the tiles in. Hope to be done and showering in there again by or before next weekend. I'll post more pics as I progress further along.