How to Remove a Glued Undermount Bathroom Sink From Marble

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Things You'll Need

  • 5-in-1 painter's tool

  • Rubber mallet

  • Screwdriver

  • Socket wrench

  • Pipe wrench

Undermount sinks provide a smooth surface across the entire countertop.

Marble countertops in a bathroom or kitchen offer sturdy and aesthetically pleasing surfaces. Properly installed, undermount sinks provide years of leak-free performance while adding to the physical beauty of the countertop. Remodeling or renovation that requires the removal of an undermount sink from a marble or granite countertop must be done carefully to avoid damaging the stone countertop. Take your time as rushing the job will place undue stress on the stone, causing fractures and cracks.

Step 1

Disconnect the drain pipe from beneath the sink, using a pipe wrench or similar tool.

Step 2

Place a support beneath the sink and disconnect any retaining clips. Retaining clips will be positioned around the circumference of the sink and held in place with screws or bolts. A ratchet or screwdriver will easily remove the clips.

Step 3

Position a 5-in-1 painters tool, available at any hardware store, or similar flat chisel against the seam between the sink and the countertop. Lightly hammer the tool with a rubber mallet to break the seal between the two surfaces. Repeat around the circumference of the bowl.

Step 4

Remove the support from beneath the sink and lower the sink slowly.


Marble countertops with a bowl built into the countertop may have to be cut with a specialized cutting tool to avoid damaging the marble. Consult a contractor or marble specialist to assist. The way to tell is by looking at the seam beneath the sink. If the seam blends into the countertop and is difficult to discern, consult a professional.


John Walker

John Walker started a writing career with technical manuals in the Army in 1995. He continued writing manuals and standards of operating procedures for various employers specializing in information technology, office products, auto mechanics and home repair. He graduated with a degree in Global Business Management in 2010.