Step 1: Prep the rough plumbing, Part I

measuring pipe while installing a sink
Photo: David Carmack
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Shut off the main water supply and drain the hot and cold lines into a bucket.

At the sink location, place a bucket under the copper supply lines and, with a compact tubing cutter, shear them both off about 2 inches from the wall.

Tighten the cutter slightly after each turn around the tube to avoid distorting the soft copper.

Find the distance from the center of the basin's drain to the wall. (On new sinks, this dimension is supplied with the instructions.)

Measure out from the wall and mark this distance on the PVC waste pipe.

Ask TOH users about Bathroom Sinks

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    Tools List

    • hack saw
      Hacksaw,
      for cutting PVC and thick brass pipe
    • propane torch
      Propane torch,
      for soldering copper tubing joints
    • two-foot level
      1-foot level,
      for leveling basin
    • tongue-and-groove pliers
      Water-pump pliers,
      for gently tightening large nuts on drain pipes
    • crescent ratchet wrench
      Crescent wrench,
      for tightening small nuts on compression fittings
    • compact tubing cutter
      Compact tubing cutter,
      for cutting copper tubing in tight locations
    • tubing cutter
      Tubing cutter with reaming blade,
      for faster cutting on bigger, accessible tubing
    • wire brush
      Wire brush,
      for cleaning inside of copper tubing before soldering
    • basin wrench
      Basin wrench,
      for tightening the nuts on faucet valves and spouts in the virtually inaccessible regions under the sink's basin
    • socket wrench
      Socket wrench,
      for driving lag screw
    • drill
      Drill and bit,
      for drilling holes for lag screws
    • flathead screwdriver
      Slotted screwdriver,
      for attaching lift rod to actuator arm
    • 16-foot tape measure
      Tape measure

    Shopping List

    1. PEDESTAL SINK

    2. LEAD-FREE SOLDER

    3. PVC CLEANER AND SOLVENT

    for joining PVC pipe



    4. FLUX

    acidic paste applied to copper before soldering



    5. FINE-GRIT SANDPAPER ROLL

    for polishing the outside of copper tubing before soldering



    6. FENDER WASHERS AND 2 1/2-INCH LAG SCREWS, TWO EACH

    for attaching sink basin to wall) Damp cloth (for cleaning and wiping up freshly soldered joints



    7. SPRAY WATER BOTTLE

    for preventing fires that may be ignited while soldering



    8. BUCKET

    for collecting water drips



    9. PIPE DOPE

    Teflon-based paste for sealing pipe threads



    10. PLUMBER'S PUTTY

    for sealing drain and faucet flanges against the sink