How to Clean a Granite Composite Sink The Right Way

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Do you need to clean a granite composite kitchen sink? 

You’ve come to the right place.

Granite composite sinks can be difficult to clean. 

However, it is possible to clean granite composite sinks with the right tools and the correct methods.

Granite composite sinks are made under high pressure to be nonporous and resist heat, chips, and scratches. 

Cleaning them requires the right cleaning materials and methods.  

What’s In This Buying Guide

In this guide, we introduce a proven method to clean a granite composite sink.

We start by making sure this guide will solve your specific problem.

Then, we provide you a step-by-step guide along with a list of the supplies, tools, and materials you’ll need to accomplish it.

Finally, we answer the most commonly-asked questions about cleaning a granite composite sink – including the gotchas that trip up most people.

Hopefully, this guide will answer all of your questions.

But in case it doesn’t, please leave us a comment below.

Why Is It Important To Clean A Granite Composite Sink?

way to clean granite composite sink

Granite composite sinks are becoming more popular due to their attractiveness, affordability, and long-lasting durability. 

This material is made by mixing fine granite sand with an acrylic resin bonding agent.

It looks and feels exactly like regular granite but is much easier to maintain, lasts longer, and is also more affordable. 

These sinks also withstand heat and are resistant to normal wear and tear. 

Granite composite sinks come in a wide range of colors and patterns.

Unfortunately, granite composite sinks are susceptible to staining from hard water and harsh cleaning chemicals, which can cause the granite to look dull or cloudy. 

This article will show you simple cleaning steps that will keep your granite composite sink looking great for many years.

Use the Right Cleaning Materials

These correct cleaning products for granite composite are easy to find, and you probably already have them in your home. 

Baking soda, vinegar, and mineral oil are all you will need. That’s it!

Baking soda and vinegar can safely clean granite, while mineral oil will restore its luster. Harsh chemicals can damage granite over time. This mix of household cleaners will not harm it. 

That said, the vinegar and baking soda mixture should not be left on the sink for more than a few minutes, as the vinegar’s acidity may cause it to work too well.

Apply the vinegar and baking soda solution directly to problem areas. You can also give the entire sink a thorough clean by covering it with the mixture. However, do not leave the sink to sit for too long.

When cleaning the sink, make sure you use a soft bristle brush (or a soft cleaning cloth). 

Finally, avoide using wire brushes or steel wool brushes on the sink as they can scratch it and cause permanent damage.

Steps To Clean A Granite Composite Sink Properly

Step 1: Drain the Sink.

best way to clean granite composite sink

We use a sink to clean various utensils as well as food items. 

Be sure to get rid of everything around the sink before you begin cleaning. 

You can remove utensils and food items as well as cleaning supplies.

Food and dirt particles build up around and inside the sink as you clean your utensils and foods. 

So before you begin your cleaning, make sure to clear out all debris from the sink.

Step 2: Scrub the Sink With Hot Water and Mild Soap

This step is only required if the sink is filthy or needs a quick clean. 

Use a soft scrubber to scrub the entire sink with hot water and mild soap. 

Rinse the sink with warm, clean water until it is spotless. Use a soft or paper towel to dry the sink.

Step 3: Use Baking Soda

way to clean granite composite sink

Use baking powder to remove stains from sinks. Use it all over the sink, paying particular attention to areas with stains.

Step 4: Use White Vinegar

After covering the entire sink with baking powder, add white vinegar. Allow it to settle for a while.

Step 5: Clean the Sink

Use a sponge or soft bristle brush to scrub the vinegar mixture after it has cooled. Cleanse all dirt and stains.

Step 6: Rinse with Warm Water.

After you have scrubbed away all dirt and stains, rinse the sink with warm, soapy water until the entire mixture, dirt, and stain is gone.

Step 7: Drain the Sink.

After rinsing the sink, clean it with a soft towel or paper towel and dry it.

Step 8: Use Mineral Oil to Restore Its Shine

You can restore the sink’s shine after it gets dry. First, use a teaspoon of mineral oil to coat a sponge or soft cloth. Then buff the sink in a circular motion. Make sure you cover the entire sink. 

After that, let it sit for about one minute before wiping off the mineral oil. You will be amazed at the sink’s shine.

There may be a cloudy buildup or stains on the sink. Don’t panic. Instead, follow the steps below to get rid of stains.

How to Remove Stubborn Stains

best way to clean granite composite sink

It may seem difficult to clean stains from a granite composite sink, but it is possible with the help of these steps.

You can either get stubborn stains or hard water stains. 

We will discuss how to clean both in this section.

What you need:

  • Soft cloth or sponge
  • Hydrogen peroxide
  • Whiting powder
  • Plastic wrap

Step 1: Combine Hydrogen Peroxide with Whiting Powder

Mix the hydrogen peroxide with the whiting powder until you have a thick paste. 

Follow the instructions provided with the whiting powder.

Step 2: Apply Paste

Apply the paste to the stain. 

Step 3: Cover the Applied Paste

After applying the paste to the stain, use plastic wrap to cover it and leave for a day or two (24 – to 48 hours).

Step 4: Remove the Paste Wrapper and Wipe it Clean

Ensure the required amount of time has elapsed before eliminating the plastic wrap. Use a soft cloth or sponge to wipe all the paste.

Step 5: Rinse The Area and Dry It

Once you have removed the paste, rinse the area with clean water until it is spotless. 

Next, use a soft towel or paper towel to dry the area.

How To Clean Hard Water Stains

best way to clean granite composite sink

Unfortunately, most homeowners do not understand hard water, making it difficult for them to get rid of the stain. 

Hard water is just water with high mineral content.  Sometimes hard water can leave mineral deposits on your farm sink, causing pesky stains. 

Things You Will Need:

  • Hot water
  • A sponge to scrub your surface
  • Mild dish soap
  • Mineral oil
  • Soft cloth

Step 1: Prepare the Cleaning Sponge

Take the sponge and wash it with hot water. Apply mild dish soap. Mix the soap with hot water or apply the soap to a sponge using a few drops.

Step 2: Clean the Sink

Use the sponge to scrub the sink. Make sure to wash the sink until you get rid of all hard water stains.

Step 3: Rinse the Sink

Once all stains are removed, rinse the sink with warm, clean water. Rinse the sink until you are satisfied with its cleanliness. Make sure it is sparkling clean.

Step 4: Drain the Sink

Although the sink is spotless, there’s still water. Use a soft, clean cloth to dry all of the water.

Step 5: Bring Back the Luster To Your Sink.

You have cleaned your sink, and it is stain-free. Now, you can make it look brand new. 

Use mineral oil to coat the sink with a soft cloth. 

Wipe down the sink until it shines. 

After you have cleaned the entire sink, let it sit for a while. 

Next, wipe the oil with a soft, clean, dry cloth. Your sink will look shiny and new.

How Frequently Should I Clean a Granite Composite Sink?

way to clean granite composite sink

Cleaning your composite sink daily is the best way to keep it clean. 

This will ensure that the sink does not accumulate dirt or stains over time, which negates the need for a thorough cleaning.

Use a sponge and warm soapy water to wash your sink each day. 

After cleaning your sink, dry it thoroughly. It may seem strange that you should dry your sink after washing it. However, regular drying prevents limescale, water spots, and stains from sticking to the sink.

Although washing your sink each day may seem tedious and complex, it is worth the effort. This will save you time and help you avoid spending money on stain removal products. 

In addition, your sink will look fantastic and retain its luster.

Here are some other things you should avoid:

What to Avoid Using On Granite Composite Sinks

Abrasive Materials

Abrasive materials such as steel wool, scouring pads, and brushes can cause scratches to your sink. 

Use soft cleaning products like sponges instead.

Harsh Chemicals

Granite composite sinks are strong but can’t withstand chemical cleaning

If you use harsh chemicals to clean your sink, it can cause damage and make it look worse.

Avoid chemicals like sulphuric, sodium hydroxide, and ammonia. 

Ask experts for advice if you are unsure if a chemical is suitable for your sink. 

Stick to chemical compounds that are specifically designed for composite sinks.

You should also avoid leaving wet sponges and washcloths inside the sink. If you leave a sponge or damp cloth in your sink, it can leave limescale deposits and watermarks. 

Plastic Items

After a while, plastic items such as bowls and drainers collect grit on their bottoms. The grit can scratch granite composite sinks if you place them on top.

Too Much Heat

Avoid putting hot pots or pans on the sink’s surface and avoiding pouring hot liquids in there.

Dragging Aluminum Cookware

Granite sinks are strong, and impacting aluminum utensils can damage them. 

Therefore, take care of your aluminum cookware both inside and outside the sink.

It takes a long time to remove food stains.

Frequently Asked Questions About Cleaning Granite Composite Sinks

1. Are Granite sinks difficult to clean?

Not really. Follow the steps above, and your sink will be easy to clean. 

A quick daily wash is also recommended. 

Follow our guide above if you are looking for a deeper clean. 

To protect against hard stains, it is a good idea to use a granite sealer.

2. What is the best way to restore a granite sink’s shine?

To restore shine, we recommend using mineral oil after cleaning. 

Mineral oil will protect your surface from future stains and water damage.

3.Why is there white haze on composite sinks?

A chalky or white haze on black granite composites sinks is relatively common. The first is caused by surface damage (calcium or lime), and mineral deposits cause the second.

Dark-colored sinks are more likely to have damaged surfaces. This is usually due to abrasive pads or non-scratch texture pads. There are many cleaning products and chemicals that are safe to use.

It is simple to remove mineral deposits, but we recommend that you take a few steps to prevent further problems: surface wear, damage, or etching.

First, identify the problem and then do a thorough cleaning. Remove all soap scum and grease, oil, and mineral deposits (calcium and lime). 


You now have the information you need to clean your granite composite sink. 

The process is simple, as you can see – and it doesn’t require special chemicals or cleaners. 

Many homeowners love their granite composite sinks for their attractive look, durability, and affordable price.

These sinks are strong enough to withstand modern life’s stresses. However, they can become dull or damaged if they are not maintained or cleaned properly. 

Therefore, don’t forget to wash your granite composite sink at least once a day.

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