Some good plumbing advice that i have come across the web recently:
I've inherited a half finished bath remodel. The shower panel mounting brackets are installed and there is an empty 2 inch diameter hole, 3 feet off the floor. The original shower head / handle was on the same wall. There is hardibacker behind the porcelain tiles. Without causing too much damage, how can I find the cold/hot connections and attach them to my shower panel?
as well as the following article from a Singapore plumber website:
What to Do When You Have a Pipe Leak
When You Notice A Leak
In some cases, the presence of a pipe leak will be obvious and difficult to miss. For example, a large leak could result in a large amount of water spreading across the floor of your home or dripping from your ceiling. A small leak, however, could take many days before you notice signs of its presence. You may notice that the carpet is damp, there is a wet spot on the wall or something similar. As soon as you notice signs of a pipe leak, it is important to turn off the water supply for the pipe leak. Depending where the pipe leak is, you may be able to turn off a valve under a sink or near a toilet, but you may have to shut off the main water supply to the house.