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Bathtub Plumbing - What is required

Bathtub plumbing is the core of installing a tub...... so, read on to find a few notes on what to do. Some of the most common mistakes that Do it Yourselfers are included for your reference.  Knowledge is POWER!

bathtub plumbing

Careful planning and breaking the process into steps can keep bath tub plumbing from becoming an overwhelming task, and you will succeed at your DIY endeavor.....

The most common mistakes that bathtub plumbing DIYers run into often result to additional costs. If you are going to install your own tub, keep these mishaps from happening to you:

  • Not checking and adhering to building code restrictions
  • Not using the proper tape
  • Using pipes of the wrong size (too small or too big)
  • Not turning off the water when tackling the pipes of the old bathtub

Some of these common tasks sound like "No Brainers', but mentioning them will at least make you think, and do some research before you begin the task.

The photo below shows a tub with the plumbing showing.... I use this example to let you see that there is the drain (connected at the bottom of the tub and at the top to prevent overflow), and the water connections.


To install the bath tub, you need to install first all the needed pipes using the suitable tapes and connection. Once this is done, you will have to carefully put the tub in position. If the tub is to be installed (not a stand alone as shown above), make sure you have nailed or screwed the tub in place and that you have anchored it properly.

The next thing to do is to mind the drainage connections. Connect the bathtub overflow into the tub drain (make sure that the drain is above the water trap).

Another tub plumbing step is to connect the hot and cold water lines to the bathtub and to the spout. Checking that these connections are secure will save you a lot of heartache in the future.

With the bathtub plumbing system in place, turn on the water so you can check for leaks.  Make sure that all is in place and that there are no leaks before moving forward with tiling, or enclosing the tub.

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