Cleaning SILGRANIT® granite sinks: what to look out for

How To Clean Silgranit sinks

Silgranit® sinks are extremely hard and resistant. This means that looking after them is really very simple. Nevertheless, when cleaning a granite sink made of Silgranit you should be aware of a few things in order to keep enjoying the fantastic look and feel for as long as possible. This care guide provides advice on how best to clean Silgranit, from daily care to deep cleaning and removing stains.

The advantages of a Silgranit sink

Silgranit sinks from BLANCO represent the advancement of the classic granite sink. The special composite material is 80 % made from the hardest component of granite, making our sinks particularly resistant. This makes it almost impossible for dirt to adhere to the surface.
The fantastic feel is another asset. Thanks to granite’s high density, Silgranit sinks feel particularly smooth and soft. Silgranit sinks are extremely easy to look after, while the surface reduces bacterial growth by an average of 98% thanks to the hygiene protection formula. What’s more, the sinks are available in lots of different colours, with the material dyed right the way through. This means that slight kinks or staining foods will not cause any changes to the colour of your silgranit sink. Only limescale deposits many lead to discolouration, but these can be removed in next to no time.

BLANCO Silgranit sinks are the perfect combination of design and colour, durability and easy care.

Daily care for your granite sink

To clean marks and everyday traces of use from your sink on a day-to-day basis, all you need is a sponge, some detergent and water. Slightly moisten the sponge under running water. Squeeze a small amount of detergent onto the soft side of the sponge. Clean your granite sink by rubbing it with the sponge in small, circular movements, using only the soft side of the sponge. Once you’re finished, rinse your sink thoroughly with clean water. Finally, rub your sink dry with a microfibre cloth in order to prevent limescale.

Removing metal abrasion

Silgranit sinks are extremely hard. Sometimes pots might leave a metal abrasion on bright surfaces. Removing these dark lines is easy. ​Apply some cooking oil to the wet sponge on the soft side. Clean the sink with the soft side of the sponge, with circular movements. ​The mixture of oil and water releases the metal abrasion from the sink. Rinse your sink with dish soap and warm water for oil removal. Then dry it with a microfiber cloth.

Removing discolouration

If you go for a long time without cleaning your Silgranit sink, limescale particles will gather on the surface. These deposits typically gather around the mixer tap and on the drainer, as dishes dry here and water droplets evaporate. While the deposited limescale is easy to spot against dark sinks, it can easily go unnoticed at first on light-coloured sinks. Only when the limescale becomes discoloured, for instance if the once-white limescale becomes the colour of a tea bag, does it become apparent. Silgranit itself is completely colour-fast – it is the limescale deposits that become discoloured. The use of BLANCO DailyClean+ or acid-based cleaning agents, such as vinegar cleaner or citric acid, helps here. They dissolve the lime and dirt layer and give the sink back its original color. Simply spray the sink with BLANCO DailyClean+ or an acid-based cleaner and let it work for a short time. Then wipe with a damp cloth and dry with a microfiber cloth.

Monthly deep-cleaning

It is best to clean your Silgranit sink every day, as described above, in order to prevent limescale from forming. This will help prevent discolouration, which is harder to remove. In addition, you should also give your BLANCO sink a basic deep clean every couple of months in case limescale has formed despite these efforts.

Once a year, or when you feel it necessary, you may want to thoroughly clean your Silgranit sink. First of all, you should ensure that you remove the deposited lime. This is followed by the basic cleaning. You can use any soft laundry detergent. To do this, close the drain of your sink. Distribute the washing powder or washing gel evenly in the sink and fill the basin with water that has been heated to at least 60 ° C. Leave the product on for at least two hours or ideally overnight. Finally, drain the solution, rinse your basin with clean water, and rub dry with a microfiber cloth.

Note: If you’re looking to get rid of stubborn dirt, avoid using alkaline agents or drain cleaners. These substances are so aggressive that they may even attack hard, resistant granite surfaces.

BLANCO DailyClean+: With the professional limescale remover BLANCO DailyClean+ you do everything right: The formula has been specially adapted to the surfaces of BLANCO sinks and taps. It cleans gently yet effectively.

Questions about the cleaning and care of Silgranit sinks

How do I clean the surface of Silgranit?

There's nothing quite as simple as a clean sink with Silgranit. Get that first impression, with these simple cleaning tips.

1) Quick Daily Cleaning: A quick daily routine, with a little dish soap and a sponge will keep your sink looking great.

2) Simple Regular Cleaning: Limescale is the typical challenge for a sink. With this simple cleaning, you can keep your Silgranit sink limescale-free on a weekly basis.

3) Deep Cleaning: Once a year or as needed, you may want to do a deep cleaning of the sink, e.g. with liquid detergent

How do I remove metal abrasion (e.g. from pots) on the Silgranit sink?

Robust and colorfast: these properties define your Silgranit sink. This makes any small dark streak that appears on your surfaces all the more noticeable. The streaks were most likely caused by metal abrasion. However, there is no need to panic: You can remove such abrasion marks in one step. After all, your sink is not only durable, but also extremely easy to clean. All you need is a non-scratch sponge (we recommend Spontex Polish, but if you don't have it, a soft sponge will do), water, cooking oil (such as sunflower or canola), and a microfiber cloth.


  • - Wet the sponge completely with water.
  • - Apply oil to the soft side of the damp sponge
  • - Remove the dark metal traces by making circular movements with the sponge.
  • - Remove the water-oil mixture thoroughly with warm water and dry with a microfiber cloth.
How do I remove limescale?

Depending on where you live and the water pipes, limescale can be quite stubborn. The unsightly water spots thus quickly become a minor blemish on your shining piece. How good that it is no trick to clean your Silgranit kitchen sink. Use citric acid, vinegar essence or our professional BLANCO DailyClean+. Apply the solution to the stains in the sink and let it soak for 5 minutes. Then rinse the sink generously, clean with a sponge and finally wipe dry.

How do I clean my strainer basket?

The strainer basket is the secret hero in your sink. That's because: it prevents your sink from clogging up, ensuring proper functionality. Over time, however, the strainer basket accumulates some dirt. Every now and then, you should therefore treat it to some care. You don't even have to buy a special cleaner for this.

Our trick: Put a level teaspoon of a powdered dishwasher detergent on the closed strainer basket. Bring 250 ml water to boil, let the boiling water sit for a moment until the kettle makes no simmering sounds, then pour the hot water over it and let the solution soak in. Then brush and scrub (e.g. with a dish brush, people with sensitive skin should be wearing gloves) until the strainer insert and drain cup shine again. Finally, open the strainer basket and remove the strainer insert. Now you have room to clean the perforations in the drain cup. When these are also sparkling clean again, reinsert the strainer insert and rinse with clean water.

How do I remove stains from dark sinks?

Milky stains quickly stand out on your dark, chic sink. Limescale deposits are to blame, and they can vary in severity depending on where you live and the plumbing. These stains also like to pick up debris like coffee and tea, causing discoloration. However, this is all less bad than it sounds. If limescale or stubborn discoloration is visible, use BLANCO DailyClean + or acid-based cleaners (as concentrated citric acid or acetic acid) to remove the limescale. Stubborn discolorations are stains fixed to lime; by removing the lime, the discoloration also disappears.

To do this, spray the sink sparingly with BLANCO DailyClean + or an acid-based cleaner and let it sit for five minutes. Then clean your sink with a sponge, rinse it with water and rub the surface dry with a microfiber cloth

Note: Avoid aggressive cleaners, i.e. Strongly caustic or solvent-based cleaners, as they can attack even tough, resistant granite surfaces.