Natural Stone Paving is one of the best options for patios, pathways and driveways, but can be subject to natural variations such as oxidation.
Oxidation in any natural stone is completely normal and with the right cleaning products and a little patience, this is simple to remove so you can continue to enjoy your new space without any unwanted markings.
Other factors such as vehicles and metal garden furniture can leave rust deposits on the surface of your stone and these are also easy to remove. We’ll show you how below!
What Is Oxidation in Natural Stone Paving?
Oxidation in paving occurs due to the porosity of the stone and the minerals contained within it. Some types of natural stone paving, such as Granite and Kandla Grey Sandstone, contain iron which can be drawn to the surface when subjected to moisture. This can cause the stone to appear to change colour in some places, appearing as orange or brown marks.
Oxidation stains can also occur when water runs over metal fixtures or fittings and trickles down to your paving, depositing iron particles from oxidation (rusting) into your paving.
Rust stains are common on driveways due to being deposited by vehicles, but can also be present in patios and pathways that are home to garden furniture, as well as barbecues, fire pits and similar garden furniture.
How to Remove Stains from Granite
These are specialist natural stone paving cleaners that are formulated specifically for removing the natural markings left by oxidation within stone.
Preventing Rust Stains
Once you’ve removed oxidation or rust stains from your Granite, you need to keep them away.
Seal Your Paving
We recommend that you seal any natural stone paving in order to prevent the stone from taking on excess moisture. Most sealants will form a protective layer across the surface of your paving, whilst still allowing the stone to ‘breathe’. See our full range of Stone Sealers.
Store Your Garden Furniture
One of the best ways to prevent hard-wearing rust stains is to store garden furniture, barbecues and similar items away from your paving during adverse weather, which will prevent oxidised particles from reaching your stone. Move furniture into the shed or onto the grass.
Be Careful With Weedkillers.
Many weed killers and similar products contain ferric sulphate which can cause rust stains when it encounters the iron-rich compounds in the paving’s aggregate. These types of stains will appear as blotches rather than defined lines, which often means they’re fainter and difficult to spot.
Keep An Eye Out
You need to keep an eye on your Granite Paving to see if rust or any other types of stains appear and as soon as they do, you should apply a rust stain remover or heavy-duty Granite cleaner to ensure the stain does not penetrate the stone too far.
Ask A Mechanic
If your vehicle is causing rust stains on your Granite paving, you should see a mechanic right away. Rust can eat away at the body of your vehicle and cause damage that may be detrimental to your safety.
If the body of your vehicle is rusting, your mechanic should be able to cut and weald it to remove stop the rust in its tracks. To prevent this staining your slabs, move the vehicle away from your driveway while the work is being carried out and complete the cleaning procedure above.
Try A Pressure Washer
To keep your granite paving in excellent condition, as well as watching out for stains, you should aim to clean your natural stone a couple of times a year at least. At Nustone, we stock a range of heavy-duty natural stone cleaning products, including granite cleaner, to keep your stone looking its best.