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White Haze On Granite Composite Sinks

Posted by Tom Munro on

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, these 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

Repair kit for granite composite sinks by Supreme Surface®As we mentioned above, try to always wipe the water out of the sink after every use. This will reduce the exposure to mineral deposit build up.

Supreme Surface Granite, Quartz & Marble Treatment with ioSeal  is a unique care and maintenance product that's ideal for composite sinks, kitchen countertops and more. Although "NOT" formulated to "remove" mineral deposits, it will help protect against mineral deposit buildup that cause the white haze and help bring back the vibrant colors to older looking and damaged sinks.

ioSeal Advantage

Formulated with ioSeal, this unique product bonds a protective barrier helping prevent mineral deposit buildup (calcium and lime) while making colors more vibrant every time you clean. These features and benefits are meaningful as preventative maintenance or improving the look and feel of damaged sinks.
The Supreme Surface Scum and Mineral Deposit Remover is a safe and effective way to remove minerals that cause a discoloration to granite composite sinks (calcium and lime) without causing more damage.

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1 comment

  • Minnie Acosta on

    I have a white haze on my granite composite sink and ordered the Scum & Mineral cleaner. Well it didn’t work. But Tom was nice enough to call me and after a few questions he explained I needed the All in One sealer to use afterward. I immediately ordered it and can’t wait to receive it to see my beautiful sink looking brand new again. I am so appreciative he called me to help me figure out my problem. Now that is “Outrageous Customer Service” to say the least!!! Thank You, Tom.

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