How to Install Shower Plumbing Part 2 How to Install Shower Plumbing Part 2

What You'll Need
Drain cuff
Small wrench
Tub or shower unit

Once you have all the main lines connected for your shower plumbing, you are then going to want to attach these to your actual tub and shower for all your intakes and drain. This process can be complicated if any of your initial plumbing measurements are off, so it is important to ensure that your actual piping is properly lined up before continuing forward to prevent leakage and breaks in the system. You should follow all city and state ordinances when changing, rerouting or installing water piping into your home to prevent damages to your investment.

Step 1 - Insert Your Tub or Shower into Position

After the shower plumbing is in place and all threaded connections are coated in plumbers tape, you can sit your tub or shower into place. Shim the areas in the center of the unit with wood bracing to prevent buckling in its base going forward. You do not need to do this bracing step if you have a cast iron unit, but is suggested for plastic based units. Simply install the unit and seal all areas under the trim and side panels before continuing forward.

Step 2 - Mount the Drain

Once you have the unit in place and sealed tight, attach the drain into the tub or shower plumbing. This way, you can test your faucet once it is assembled without water running all through the unit and into your home's floor on a run into your basement.

Most of these units have an inside lock to which you can hook a wrench and simply spin them onto the housing of your drain pipe. Be sure to add some sealant to the underside of the drain where it will lock into the tub basin to avoid leaks around the drain edge, and screw it down tight into place. The drain cover or trap generally will screw into the drain coupling once its locked in, and it should sit down into the actual tub drain hole, flush with its surface. 

Step 3 - Attach the Handles and Spout to your Faucet

At this point, you should already have the main housing for your faucet installed with the rest of the shower plumbing. Once the unit is in place, use the plumbers tape around any threaded ends to prevent leakage going forward. The internals for the handles can be adjusted for water flow by using a screwdriver and the wrench to adjust them in or out before you screw them into place. Do not put plumbers tape on the thread's internal valves for your handles as it can jam up or interfere with the mechanics of your system.

Once you have adjusted and screwed your valves into place, you can use some sealant on the covers and put them into place as well. This keeps water from getting in behind your wall. Simply screw the handles onto the valves, and then place the caps over the screws, which vary depending on the type of faucet you are installing.

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