Composite Granite Kitchen Sink Care & Maintenance Guide

Unlike solid granite, composite granite does not have a porous surface, and this makes it much easier to clean and maintain.

Composed of crushed quartz or quartz sand and an acrylic binder, the material might be textured, depending on the manufacturer. The texturing produces a handsome matte finish, but it can also create the potential for the cloudiness that is associated with granite sinks.

The granite composite sink cleaning and care tips will help you keep your sink looking fantastic without a hint of cloudiness to mar its finish.

kitchen sink maintanence

Daily Cleaning Tips for Granite Composite Kitchen Sinks

A brief cleaning routine is the easiest way to maintain the beauty of your composite sink.

  • Rinse the sink after each use
  • Wipe off stubborn food particles, if needed, and rinse again
  • Complete the job by drying the sink with a clean, soft cloth to remove the water containing minerals and/or salt that can cloud the surface
  • Once a day to once a week, use a cleaner fabricated especially for granite composite, and follow the instructions carefully

Suggested Cleaning Products for Granite Composite

These are products suggested by the manufacturers or by home care experts:

  • Blanco BlancoClean Silgranit Sink Cleaner
  • Blanco also recommends Bar Keeper’s Friend and a soft scour pad for stubborn dirt, mineral oil to restore luster and Lime-A-Way or CLR to remove deposits
  • Supreme Surface Granite Cleaner & Conditioner (for daily care)
  • Supreme Surface Scum & Mineral Deposit Remover (for cloudiness)
  • Mild dish detergent and water (rinsed thoroughly, since detergent can leave a cloudy film too)
  • White vinegar used sparingly might dissolve mineral deposits too

Composite Granite Care Dos and Don’ts

  • Keep up your daily sink care routine, and it won’t be a hassle
  • Clean metal marks left by pans using a plastic or nylon scouring pad
  • Don’t use harsh or abrasive cleaners on your sink because they aren’t needed and may damage the sink
  • Don’t use steel wool
  • Place a basin rack with rubber feet in the sink to help prevent chips and scratches
  • Don’t leave juice, wine, tomato products, tea or coffee in the sink for long
  • Don’t use bleach, ammonia, citrus cleaners or drain-opening chemicals

Granite Composite Care and Maintenance FAQ

This granite sink care Q&A answers common questions.

We bought a house with a granite sink that hasn’t been cared for, by the looks of it, in several years. What’s the best bet for removing the heavy cloudiness?

Soak a sponge or cloth with CLR or other scale-removal product, and wet the surface of the sink thoroughly. Follow label instructions. After the recommended time, rinse away the product. Repeat, if needed. If the second application doesn’t remove the scale, apply a third round of the cleaner, and gently scrub it with a nylon or plastic scouring pad to loosen the mineral scale. Don’t use steel wool.

Our granite composite sink has a chip in it. Can it be repaired?

Chips and cracks can be repaired with a quality 2-part epoxy that has been tinted to match the color of the composite granite.

  • Surround the chip or crack with painter’s tape
  • Experiment with tinting the epoxy to get the color right
  • Apply the tinted epoxy to the chip or crack with a putty knife
  • Remove the tape as soon as the epoxy starts to harden
  • Allow the epoxy to cure as long as required by the manufacturer before allowing it to get wet
  • Gently sand the hardened epoxy with fine-grit sandpaper, if desired
  • If you have the piece of granite composite that was chipped out of the sink, use the epoxy as glue, and put it back in place
  • Tip: Using nitrile gloves during this process will keep epoxy off your hands

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