Plumbing is a speciality, and not even your speciality bathroom supplier should be doing it himself. Superior plumbers can make sure that you evade the most expensive problems possible. This includes flooding, ripping out tiles to repair horrific plumbing at the back of the walls and leaks that can’t be found. How much will you accumulate by hiring a contractor who isn’t qualified in plumbing? The answer is, very little. Supplier hourly charges and plumber rates are not that dissimilar. Be adamant on hiring a qualified plumber.