Installing bathroom sinks is a relatively easy-do-it yourself project; the only requirement is a few basic home improvement skills and a few common tools. Many sinks, such as a pedestal sink or a standard ceramic sink with a cabinet are basically just connected to the floor or wall and then hooking up the plumbing. If you are ready to tackle this DIY project or just looking for small bathroom remodeling ideas, the following step-by-step instructions will guide you through the process of installing a self-rimming sink and undermount sinks.

 

What You’ll Need:

  • Silicone caulking
  • A pipe wrench or slip-joint pliers
  • A basin wrench
  • Plumbing sockets

Removing a Bathroom Sink

  • Shut off the water supply. Typically there are two valves (one for hot & one for cold), so make sure both are closed.
  • Detach the existing sink. The connection of a bathroom sink varies, depending on the existing sink; some are caulked in place, while others are held in place with metal clips. Inspect the existing sink to determine how it is held in place. If it caulked in place lightly run a putty knife around the perimeter of the sink to loosen the caulking and if it is clipped in place, remove the clips.
  • Disconnect water supply and drain lines from the bathroom faucet. Using the locking pliers or wrench, loosen the large nut to disconnect the sink from the drain (if the U-bend can be removed at the same time, do so). You should have a bowl or bucket ready in case there is leakage from the drain.
  • Thoroughly clean (remove all dirt and caulk) and dry the area to prepare it for the new sink. If you need to cut out the area to prepare it for the new sink, do this now.

 

Installing a Self-Rimming Bathroom Sink

  • Make sure the surface is clean and free of debris.
  • Install the new sink. Follow the instructions that were included with the new sink for the installation itself and use the mounting hardware or clips that were included.
    If you are installing a ceramic sink that is held in place by gravity, apply caulk around the edges where the sink comes in contact with the surface of the counter. Carefully lower the sink over the caulk, make sure that it is centered correctly and that you have a strong seal.
  • Install the water and drain lines. Connect the drain through the hole under the sink. You will typically be installing a rubber gasket that goes flush against the sink and a washer and nut. Use silicone putty to shore up the seal. Connect the U-bend in the same manner as you took it off earlier. Connect the water lines to the faucet on the sink and follow the instructions with the sink to install the drain plug. Double checks to ensure all lines are connected and allow the caulk to dry for 24-hours before using the sink.

 

These types of bathroom sinks are installed under the countertop as opposed to self-rimming, which are installed over the countertop.

Installing an Undermount Sink

To install an undermount sink, the attachment method varies a bit by manufacturer, but the installation instructions are included with every model

  • Apply small bead of silicone caulk around the edge of the bowl.
  • Position the bowl and secure it to the counter with the screws that were provided with the sink. Use a clean cloth to remove any excess sealant.
  • Turn the counter over and attach it to the cabinet.
  • Hook up the water supply lines and the drain lines
  • Flip the assembly over and attach the sink to the bottom of the countertop.

 

Enjoy your new sink!