White Haze On Granite Composite Sinks


One of the more common issues related to a granite composite sink is preventing and removing the white haze. When a composite granite sink is new, the colors are vibrant and the surface has a nice sheen. With proper care and some do's and don'ts, granite sinks are simple to keep looking like new for years to come. Even on the darker colors, brown and black.

White Haze More Noticeable On Black Composite Sinks

The white haze is usually more noticeable on darker colors such as black and brown vs the lighter colors, white and cream. There are two things that typically cause the white haze; etching and mineral deposit buildup. If your sink has become etched, the damage is irreversible, but in many cases can usually be masked.

Mineral Deposit Buildup, Calcium & Limescale, Causing the White Haze

Unless you wipe your sink out after every use, water will evaporate leaving behind minerals. These minerals (calcium and lime) bond to the surface, progressively building up and causing the white haze to occur.

Removing Mineral Build-up Causing The White Haze

According to the Marble Institute of America, all natural stones should be cleaned with pH neutral cleaners. As a note, pH neutral or balanced cleaners are not formulated to remove mineral deposits. Most leading brands that are formulated to remove the white haze/mineral buildup, are considered harsh and can etch the surface, causing permanent damage.


White Haze Caused by Etching

An image that shows a piece of granite, one side polished and the other damaged. The damaged side has been etched.

 Black granite polished and unpolished resembling the look of the white haze on a black granite composite sink.

When a granite sink has been etched, particularly on black composite sinks, it resembles the look of burnt charcoal or a white haze. Much like polishing a piece of black granite, the color transitions from a charcoal color to a dark black reflective surface. But when etched, it does this in the reverse order. If this is the case, although it can be masked to look better,  it is typically irreversible without the help of a professional stone care product.

Prevent The Haze and Restore The Look

As we mentioned above, try to wipe the water out of the sink after every use. This will reduce the exposure to mineral deposit build up.

Prevent The Haze With ioSeal

Products that contain ioSeal bond a protective barrier to the surface helping prevent mineral deposit buildup, while improving the look and feel of the surface. Colors tend to become more vibrant every time you clean.

Looking for personalized assistance to help restore the look of your composite granite sink? Feel free to contact us with questions 317-350-2955.

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  • Tom Munro
Comments 3
  • Cynthia McConkey
    Cynthia McConkey

    Sorry can’t send pictures, but white dots on granite in front of sink .

  • Cynthia McConkey
    Cynthia McConkey

    Is this a build up of something? We rent out our condo and I am sure it wasn’t there before.. will send pictures to your email.

  • Shannon Wastling
    Shannon Wastling

    I called Tom about the damage I had done to my sink by using a vinegar and baking soda solution while soaking some greasy filters. I thought the damage may have been irreversible, but Tom and courage me to try the composite granite sink restoration kit. I got it within 2 days and tried it right away following all his instructions and my sink is like new. I can’t believe how well it worked and I’m so thankful!

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