How to Install a Vessel Sink Part 2

What You'll Need
Spirit level
P-trap or s-trap
ABS plastic pipe
Extra strength silicone and plumbing adhesive
Silicone applicator gun
Grips and wrenches
Plumbers tap

Your first plan of action when installing a vessel sink is to install the vanity or countertop of your choice, make the hot and water supplies lines and install the faucet. When these are done, you now need to install the actual vessel sink and its drain system.

(Method 1 - Above Countertop)

Step 1: Installing the Vessel Sink

First, apply the silicone on the bottom patch of the sink, i.e. where the vessel sinks will actually touch the countertop. Apply silicon accordingly, so the smaller the bottom of the vessel sink is, the less silicone you have to apply. Once you have pressed the vessel sink onto the countertop then clean away the excessive silicone; don’t leave the silicone to dry because it is very hard to clean it afterwards. Make sure to set the vessel sink in level on top of the drain hole, otherwise the drains will not work perfectly, so make sure you are as accurate as possible. Clean up any excess of silicone.

(Method 2 - Recessed)

Step 1: Installing the Vessel Sink

Position the vessel sink on the drain in the countertop, and ensure it is leveled. From beneath the countertop, apply some silicone, all around the perimeter of the vessel sink and make sure that there is contact between the vessel sink and the countertop. To check if it is a proper fit, insert the drain in the drain opening, all the way through the countertop.

In the recessed method, the vessel sink will keep in place mostly because of its weight.

Step 2: ABS Installation

First you have to install and position the ABS plastic piping, that is, the part that connects the drain assembly to the black plastic drain pipe, emerging from the wall.

Extent the pipe from the wall till it reaches the vessel sink. Here you can either use a p-trap or an s-trap, whatever the case may be (P-trap if pipe is coming out of the wall and S-trap if the pipe is coming out of the floor).

Insert the elbow fittings so that you can get the right position and then with the help of a female trap adapter (with lock nut) attach the drain assembly to the ABS pipe. Use ABS pipe cement or special glue to attach everything together.

Step 3: Drain Installation

Once the ABS pipe is ready then you can start to install the drain. Remove the lock nut from the lower gasket of the drain and if the tailpipe is removable then unscrew it. Insert the drain from above the vessel sink. To bond the drains to the pipe you can use plumber putty, only if necessary.  From underneath the vanity, re-screw the rubber gasket and insert the tailpipe into the female adapter. Hold the drains from above (to avoid spinning) and tighten the lock nut on the assembly, ensuring that it is well tight without over doing it.  Once the latter has been done all you have to do is tighten the plastic lock nut to the female ABS trap adapter (this will seal the tailpipe of the drains in place).

The very last thing that needs to be done is to turn of the water supply and check that everything is working correctly and then enjoy your newly installed vessel sink.