Indian sandstone is one of the most popular materials used for patios in the UK. Its natural colours and textured surface create a beautiful outdoor space, but sandstone patios can easily collect dirt, algae, moss, and black spots over time.
Choosing the best patio cleaner for Indian sandstone is essential to remove stains without damaging the stone.
Unlike concrete or brick, sandstone is a natural and slightly porous material. This means harsh chemicals or strong acid cleaners can cause discolouration or erosion if used incorrectly.
In this guide, we look at the best patio cleaners for Indian sandstone available in the UK, along with tips on how to clean sandstone safely and effectively.
Why Indian Sandstone Needs Special Cleaning
Indian sandstone is valued for its natural appearance, but its porous surface means it absorbs moisture, dirt, and organic growth more easily than some other paving materials.
Common problems that affect sandstone patios include:
- Green algae growth
- Black lichen spots
- Moss in damp areas
- Dirt and grime from weather exposure
- Rust or leaf stains
Using a cleaner designed for natural stone helps remove these stains while protecting the surface of the paving slabs.
Best Patio Cleaners for Indian Sandstone
Below are some of the most effective patio cleaning products suitable for Indian sandstone, many of which are widely available on Amazon.co.uk.
1. Wet & Forget Moss, Mould & Algae Remover
Wet & Forget is one of the most recommended cleaners for natural stone surfaces because it uses a gentle “spray and leave” formula.
Key Features
- Non-acidic formula
- Suitable for natural stone patios
- No scrubbing required
- Long-lasting algae control
The product works by killing algae and mould growth on the surface. Over time, rain and weather gradually wash away the dead organic material.
Best for: removing algae and mould from sandstone patios without harsh chemicals.
2. Patio Magic Green Mould & Algae Killer
Patio Magic is another popular patio cleaner designed to eliminate green mould and algae.
Key Features
- Concentrated formula
- Suitable for patios, paths, and walls
- Prevents regrowth of algae
When diluted and applied to sandstone paving, Patio Magic kills algae and helps stop it from returning.
Best for: maintaining sandstone patios and preventing green staining.
3. Pro-Kleen Natural Stone Cleaner
Removes Dirt & Grime - Removes Black Spots & Lichen - Concentrated Formula - Covers up to 25m2 (5 Litres)
Pro-Kleen offers a specialist cleaner suitable for natural stone surfaces such as Indian sandstone.
Key Features
- Designed for natural stone
- Removes dirt, moss, and algae
- Suitable for patios and driveways
This cleaner is stronger than many spray-and-leave products and can help restore heavily stained sandstone.
Best for: deep cleaning sandstone patios.
4. Smartseal Sandstone Cleaner
A Professional-Grade Cleaner Specially Formulated to remove Black Spot, Green Algae & General Surface Staining (5 Litre)
Smartseal is a professional-grade cleaner commonly used by patio cleaning companies.
Key Features
- Specially designed for sandstone surfaces
- Removes dirt and stains
- Helps restore natural colour
This cleaner is particularly effective when used before sealing sandstone patios.
Best for: restoring older sandstone patios.
5. Jeyes Fluid Outdoor Cleaner
Patio Cleaner for Paths, Pet Housing or Greenhouses Tackles Dirt & Stains
Jeyes Fluid is a traditional outdoor cleaner that works well for general patio maintenance.
Key Features
- Multi-purpose outdoor cleaning solution
- Removes grime and organic growth
- Affordable and widely available
While it may not remove deep stains instantly, it works well for routine cleaning.
Best for: general patio cleaning.
How to Clean Indian Sandstone Safely
Cleaning sandstone requires a slightly gentler approach than cleaning concrete or brick patios.
Step 1: Sweep the Patio
Remove leaves, soil, and debris before applying any cleaning product.
Step 2: Apply the Patio Cleaner
Dilute the cleaner according to the instructions and apply it using a watering can, sprayer, or brush.
Step 3: Scrub the Surface
Use a stiff outdoor brush to work the cleaner into the surface.
Step 4: Rinse with Water
Rinse the patio with clean water or use a pressure washer on a low setting.
Step 5: Allow the Patio to Dry
Once dry, you should see a noticeable improvement in the appearance of the sandstone.
Can You Use a Pressure Washer on Sandstone?
Pressure washers can be used on sandstone patios, but they should be used carefully.
Advantages
- Removes surface dirt quickly
- Saves time when cleaning large patios
Risks
- High pressure may damage the stone surface
- Can remove jointing sand between slabs
For sandstone patios, use low to medium pressure and keep the nozzle moving to avoid damaging the stone.
Tips for Preventing Stains on Indian Sandstone
Once your patio is clean, a few simple steps can help keep it looking good for longer.
Clean the Patio Regularly
Light cleaning once or twice a year prevents heavy staining.
Improve Drainage
Standing water encourages algae and moss growth.
Apply a Sandstone Sealer
A stone sealer protects sandstone from moisture and staining.
Trim Overhanging Plants
Reducing shade allows the patio to dry faster after rain.
Frequently Asked Questions
What is the best cleaner for Indian sandstone?
Products designed for natural stone, such as Wet & Forget or Smartseal Sandstone Cleaner, are usually the safest and most effective.
Can bleach damage sandstone?
Strong bleach solutions can discolour natural stone. If used, they should be diluted carefully.
How often should sandstone patios be cleaned?
Most sandstone patios benefit from cleaning once or twice a year, usually in spring and autumn.
Should sandstone be sealed?
Sealing sandstone can help protect it from stains, algae, and weather damage.
Final Thoughts
Indian sandstone patios add natural beauty to outdoor spaces, but they require the right cleaning products to maintain their appearance.
Choosing the best patio cleaner for Indian sandstone ensures that dirt, algae, and stains are removed safely without damaging the stone.
Products like Wet & Forget, Patio Magic, and Smartseal Sandstone Cleaner are among the most effective options available in the UK.
With regular cleaning and proper maintenance, your sandstone patio can stay clean, attractive, and slip-free throughout the year.
By using the right cleaning methods and products, you can keep your garden patio looking fresh and welcoming for many seasons to come.
