Cleaning granite can sometimes be a challenging task, especially when dealing with stubborn stains. Granite is a popular choice for kitchen and bathroom surfaces due to its durability and aesthetic appeal. However, despite its strength, granite is a porous material and can still develop stains.
In this guide, we’ll explore different methods for cleaning granite stains you can try at home. Remember, if in doubt, our professional granite cleaners in Melbourne are here to help.
What Makes Granite Stain?
Granite is a natural stone composed of minerals like quartz, feldspar, and mica. While it is incredibly durable and resistant to scratches and heat, its porous nature makes it susceptible to stains.
When liquids or other substances penetrate the surface, they can leave behind unsightly marks. Regular cleaning and sealing can help prevent stains, but it’s essential to know how to remove them if they occur.
Before you dive into cleaning granite stains, take note of the following:
- Test these cleaning methods in a small, inconspicuous area of the granite. This will ensure that the solution does not damage the surface or affect the colour of your granite.
- If the stain was particularly stubborn or if the granite was unsealed, you may need to reseal the surface.
How to Remove Stains from Granite Countertops, Floors & Tiles
Water Stains
Water stains are often the result of hard water or mineral buildup. These stains are usually lighter in colour and can be mistaken for etching.
Mix a small amount of dish soap with warm water. Apply the solution to the stain with a soft cloth and gently wipe the surface. Rinse the area with clean water and dry with a microfibre cloth to remove any soap residue.
Vinegar can be effective for removing soap scum and hard water stains, but it should be used cautiously and in a diluted form.
If dish soap is not effective in cleaning the area, try mixing one part standard-strength vinegar with three parts water. This reduces the acidity and the risk of etching. Use filtered or distilled water so you are not trying to clean hard water stains with more hard water.
Apply the vinegar solution to the granite for at most a few minutes. Rinse thoroughly with clean filtered or distilled water and dry the surface.
How to Remove Oil Stains
Oil stains are common in kitchens and can come from cooking oils, salad dressings, or other greasy substances. They often appear dark and can be difficult to remove.
To remove oil stains from granite, try blotting the stain with warm soapy water (use your regular dishwashing liquid), rinse with clean water and dry with a soft cloth. If this isn’t successful, you can also try making a paste of cornstarch and water (also known here in Melbourne as cornflour). Leave it overnight, then clean away with dish soap and water.
You can also try creating a paste of baking soda (bi-carb soda) and water (use three parts bicarb to one part water). Apply the paste to the stain and cover it with plastic wrap. Leave it on for several hours or overnight. Remove the plastic wrap and use a soft cloth to wipe away the paste. Rinse the area with clean water and dry with a soft cloth.
Food and Drink Stains on Your Kitchen Countertop
Red wine, coffee, tea, and other dark liquids can stain granite if left on the surface for an extended period. Similarly, foods with natural pigments, like berries, can also leave stains. Your kitchen countertop is particularly prone to food stains.
To remove stains on light coloured granite countertops, mix 3 parts bicarb soda and 1 part 3% strength hydrogen peroxide until you achieve a thick, paste-like consistency. The paste should be thick enough to stay in place on the stain but not so thick that it is dry and crumbly.
Apply it to the stained area and cover it with plastic wrap. Leave it on for several hours or overnight. Remove the plastic wrap and use a soft cloth to wipe away the paste. Rinse the area with clean water and dry with a soft cloth.
If you have a dark granite countertop, use acetone instead of hydrogen peroxide – the same ratio applies.
Additional Recommendations:
- Before applying the paste to a large area, test it on a small, inconspicuous part of the granite to ensure it does not damage the surface.
- If you used a paste, you may need to use a plastic spatula to scrape away the excess gently.
Etching
Etching is a form of damage caused by acidic substances, such as lemon juice, vinegar, coffee, tomato sauce, wine, and citric acid based cleaners.
Unlike typical stains, which are discolourations caused by substances penetrating the surface, etching is a chemical reaction that results in a dull, sometimes frosted appearance on the stone.
If etching does occur, it can be more challenging to remove than a stain, and the process often requires professional assistance. However, you can try the following steps for minor etching:
- Apply a Polishing Compound: Use a specialised granite polishing compound designed to restore the shine to etched areas. Follow the manufacturer’s instructions carefully.
- Buff the Surface: After applying the polishing compound, use a soft cloth or a rotary buffer to gently buff the surface until it is smooth and shiny.
- Rinse and Dry: Rinse the area with clean water to remove any residue from the polishing compound, and then dry the surface with a soft cloth.
For more severe etching, it’s best to consult the professional stone restorers at Clean Seal Australia. We have the expertise and specialised tools to repair and restore the surface of your granite countertops effectively.
Rust Stains
Rust stains can occur if metal objects, like pots or pans, are left on the granite surface for an extended period.
Use a specialised rust remover or create a paste of baking soda and water. Apply the rust remover or paste to the stain and cover it with plastic wrap. Leave it on for several hours or overnight. Remove the plastic wrap and use a soft cloth to wipe away the solution. Rinse the area with clean water and dry with a soft cloth.
Best Practices for Daily Cleaning
Regular cleaning is the first line of defense against stains. Here are some best practices to keep your granite countertops looking their best:
- Use a Non-Abrasive Cleaner: Avoid using abrasive cleaners or scouring pads, as they can scratch the surface of the granite.
- Dry the Surface: Wipe down countertops after use to prevent water spots and other stains from forming.
- Seal the Granite: Sealing the granite helps protect against staining. Consult with a professional to determine the best sealer for your granite surfaces.
Additional Tips for Maintaining Your Granite
Seal the Granite Regularly
Sealing your granite countertops can provide an extra layer of protection against stains. Professional granite sealing is recommended every 1-2 years.
Clean Spills Immediately
To prevent stains from forming, it’s important to clean up spills immediately. Wipe the surface with a soft cloth and dry it to prevent liquids from penetrating the granite.
Use Coasters and Trivets
Protect your granite surfaces by using coasters for glasses and trivets for hot pots and pans. This will help prevent water spots and heat damage.
Avoid Harsh Chemicals
Many household cleaners contain harsh chemicals that can damage the surface of your granite. Stick to mild, non-abrasive cleaners to keep your granite looking its best. Avoid using car polish on granite.
Regular Cleaning
Regular cleaning is essential for maintaining the beauty and functionality of your granite countertops. Use a daily cleaner designed for natural stone surfaces to keep your granite looking clean and polished.
Conclusion
Most types of stains on granite worktops can be effectively removed using homemade solutions containing water, dish soap, and ingredients like baking soda, cornstarch, and hydrogen peroxide. However, tougher stains, such as those from mould, mildew, and rust, might need more specialised treatment.
For these stubborn stains, our experts at Clean Seal Stone Care offer professional granite cleaning, polishing, and sealing to restore your granite kitchen countertops, floor tiles, or bathroom surfaces. Get in touch today and let our expert team clean your granite to avoid future staining.
We're The Right Company To Restore Your Natural Stone
1300 952 847