How to Remove Rust From Granite? – Ultimate Guide 2022

Home » Blog » How to Remove Rust From Granite? – Ultimate Guide 2022

It isn’t uncommon to have rust stains on granite due to iron deposits in its constituents.

When iron is exposed to water and air containing oxygen, the reaction leads to rusting. Even if you keep your granite countertops clean, they can get stains due to porous surfaces.

So, how to remove rust from granite?

Removing rust from granite isn’t as simple as wiping a laminated floor or stone. You must be careful, as using harsh chemicals or abrasive material will damage the granite.

That’s why we have shared some easy but effective ways to remove rust from granite using different chemicals and cleaners.

What Causes Rust Stains on Granite

Rusting on granite starts due to the oxidation of iron. The stained region may seem red or orange, giving the countertops a dirty look. Rust badly impacts the beauty of granite, and cleaning it is necessary. However, you must know the root cause of rust stains on granite before finding ways to clean it.

If rust is present around the sink, it is probably due to water leakage through the faucet. This usually happens when the sink is centered between the granite countertops slabs. So, fixing the leakage or faults in the faucet will reduce the chance of rusting. Other reasons are standing water, improper cleaning routine, or metal tools lying over the counters.

Though iron is the main cause of rust stains on granite, sometimes your lawn floor gets these rust marks due to certain fertilizers that contain high iron content. Humidity in the environment and iron in fertilizer get under oxidation to leave rust stains that are hard to remove.

Rust Removal: How to Remove Rust From Granite

How to Remove Rust From Granite – Step-By-Step 

Granite isn’t safe from staining, and anything affects it due to the porosity of its surface. Even though rust comes from the iron present in granite, you can remove it in simple ways. You must protect counters by sealing them or keeping them dry and clean. Here is the step-by-step guide on how to remove rust from granite.

Required Items

You must get the following items before starting to remove rust stains.

  • Granite sealant
  • Compatible Cleaner
  • Water
  • Baking Sode/Hydrogen Peroxide/Oxalic Acid
  • Nylon Brush for Scrubbing
  • Spray Bottle
  • Tape


Get A Good Cleaner

The first thing you should get is a good-quality granite cleaning solution. You may not want to disrupt the surface by using harsh or acidic chemicals. So, a commercial granite countertops cleaner will do the job best.

  • Spray the cleaner over the rusty area of the granite while considering careful measures.
  • Use a nylon brush to scrub the granite surface to remove stains.
  • Make sure never to use abrasive or steel wool to rub over granite as it will scratch granite.
  • Wash the surface with plain water and keep rubbing with a sponge until all stains are removed.
  • Do not forget to apply a sealant to protect the granite from future stains.

Cleaning With Hydrogen Peroxide

Another easy way to remove rust from granite is by cleaning it with hydrogen peroxide.

  • Take a 4% hydrogen peroxide solution because exceeding the quantity will prove harmful.
  • Apply the solution to the stain and leave it for almost 24 hours.
  • Wipe off the granite or wash it with water to eliminate rust.
  • One disadvantage of this method is that if your granite is sealed properly, it is easy to remove rust with hydrogen peroxide. However, if no sealant is present, the solution will spread rust over the surface instead of cleaning it.
  • Finding and fixing the reason for rusting will help keep your granite countertops safe.

Remove Rust With Oxalic Acid

Though oxalic acid isn’t completely safe to use on granite due to its acidic nature, you can safely remove rust stains.

  • Before using oxalic acid, dilute it by adding water to make it safe.
  • Put only a drop of acid over the rust stain, and do not pour the whole solution.
  • Leave that drop for some time till it is absorbed by granite. Wipe it off, see if the stain is still there, and add another drop.
  • Keep repeating this process by adding one drop until the rust removes completely.
  • Wipe it using a cotton ball, and when you notice the cotton is turned brown, it means the stain has been removed.

You will need to be more careful with this method, as any mistake will damage the granite.


How to Remove Rust From Granite With Baking Soda


In this method, you will make a paste to remove rust stains. This paste will absorb rust and dry out to remove stains. This paste is also referred to as poultice, which you can easily get in the market.

  • Take a bowl to add water and baking soda to it. Mix thoroughly to make a paste with equal consistency.
  • Avoid adding other acidic ingredients such as lemon, citrus, or vinegar to speed up cleaning.
  • Apply the baking soda paste or poultice over the granite countertops. Try to cover the stain completely with a thin layer of paste. A thick layer will take more time and doesn’t guarantee better results.
  • Cover the area with the help of plastic wrap and fix it with tape.
  • Keep the counters in this state for 24 hours or more until the poultice dries out completely.
  • After a certain duration, remove the poultice from the stain and wash that area.
  • All stains will be removed, and you can use your countertops again after drying.

How to Clean Rust From Granite Headstones

Granite headstones are often associated with special memories, but their exposure to rust-causing elements can give you pain. Metal objects around them leave tough stains, and sometimes it gets too hard to get rid of them.

  • Get Iron Out or Super Iron Out cleaner from the market for cleaning rust from granite headstones.
  • Keep the headstone soaked in warm water for some time.
  • Add one cup of Iron Out inside one gallon of water. Make sure to wear gloves while doing this. Dip a sponge into the solution and wipe the stained areas of the headstone.
  • Apply plastic warp on the Iron Out area of the headstone to prevent evaporation of the cleaner.
  • Wash it after 24 hours with clean water and scrub more if there are still marks of rust.

How to Remove Rust From Granite Sink


Many are fans of granite sinks but they are also unsafe from rust stains. You can clean them with oxalic acid to get rid of rust, but following the right instructions must be your priority. The right way of using oxalic acid is already mentioned. However, here are some precautionary measures you must keep in mind.

  • Avoid using alkaline cleaning agents of strong nature, such as caustic soda or ammonia.
  • Always keep the sink clean and dry after use to avoid oxidation.
  • Drain all the cleaners or harsh chemicals properly, and never let them sit inside the sink for longer.

Useful Tips to Prevent Granite From Rusting in the Future

Rust stains are never good for any surface, not just for granite. They damage areas for a lifetime, giving them an ugly appearance. Therefore, it is essential to take proper preventive measures for the safety of granite.

  • First, you must apply a sealer on the granite countertops.
  • Keep the metal objects away from granite or avoid direct contact.
  • The porous surface can easily absorb these stains and other cleaners, turning them into rust or worse.
  • Always clean your counters with a dry cloth to suck up moisture. Humidity is another major reason for rusting.
  • Never use harsh chemicals or abrasive materials to scrub the granite.
  • A sharp object, such as a knife, can scratch the surface accidentally. So, make sure to be cautious with these objects.

Final Thoughts

We hope the tips and methods on removing rust from granite will help you maintain its durability and beauty in your home. The best solution is to find the reason for rusting and then deal with that source to ensure prevention in the future.

You can not start randomly with any cleaner available in the market due to its toxicity, but following proper guidelines is the best way to sort out these problems.

Leave a Comment