How to Remove Faucet Holes on a Granite Sink

A granite sink is a lovely addition to a kitchen or bathroom.

The manufacturer partially drills the faucet holes.The manufacturer partially drills the faucet holes.
The granite sink is an amalgam of natural crushed quartz and plastic resins; the manufacturing process molds and polishes the composite material into a beautiful and durable sink. The manufacturer partially drills the faucet holes in the factory. Before installation, you must remove the knockout holes for the faucet.

Position the sink upright on a stable work area.

Locate the partially drilled knockout holes made by the manufacturer. Some manufacturers place stickers over the knockout sections.

Position your chisel, screwdriver or metal punch over the center of the partially drilled knockout holes. Strike the chisel, screwdriver or metal punch firmly with the hammer.

Repeat Step 3 for any additional faucet holes.

Raze any rough spots smooth with a file.

Things You Will Need

  • Hammer
  • Chisel, screwdriver or metal punch
  • File


  • Enlist a helper to hold the sink steady while you hammer the knockouts.


  • Always ensure that the edges of the sink are supported. Never carry the sink by the sink holes. The granite material is very durable, but the areas around the holes may crack if not supported.
  • Always compare the placement of the manufacturer's stickers to the partially drilled holes, to ensure that the stickers are accurately placed. If the stickers are misplaced, ignore them and remove the knockouts at the partially drilled locations.

About the Author

Rebecca Mecomber, a former radio broadcaster, has been a professional blogger and writer since 2006. Her articles and interviews have appeared in "The Wall Street Journal," and several other publications, covering topics such as Federal Trade Commission policy and media regulations, blogging, home improvement and New York travel.