How to Remove Black Spots from Natural Stone
Outdoor stone surfaces such as patios, steps and even headstones can be susceptible to black spots forming over time, especially during wet weather. This unsightly issue is not just an eye sore, it can be damaging to the stone if left untreated. This blog offers you a step by step guide highlighting how to remove black spots from natural stone.
What Causes Black Spots on Stone?
In order to effectively treat black spots, it is important to understand what they are and how they are caused. Black spots on stone are predominantly caused by lichen. This biological matter loves wet and shady conditions.
The lichen loves to feed off nutrients and minerals that can be found in stone and other biological debris such as leaves and soil. As it grows, its hyphae (filamentous strands of fungal cells) penetrate the stone, spreading through the stone’s surface.
Does Black Spot Damage Stone?
Black spots are not good for your stone, and can be easily solved by using an effective biocide treatment. If left for a long period of time, the lichen and fungi can cause structural damage such as cracks in the stone, which can be costly to repair. Black spots can penetrate deep into porous stone surfaces which can cause material degradation.
These are not the only issues caused by black spots, lichen on the stone’s surface can become very slippery when wet, which could lead to injury if you are not careful.
How to Remove Black Spots from Natural Stone
The most effective way to remove black spots from natural stone is to use a biocide treatment such as GK Black Spot Remover. This premium solution is designed to effortlessly remove black spots, discolouration and microbiological contaminants on porous surfaces.
GK’s high performance cleaner can revive surfaces that are marred by even the most stubborn black stains. Its unique formula targets both organic and non-organic staining with precision, ensuring a thorough cleaning that will leave the surface free of all unsightly blotches, spots and marks.
GK Black Spot Remover uses a thixotropic, slightly viscous, and non-penetrating liquid composition and boasts a unique alkali formula enriched with wetting agents. GK Black Spot Remover thins when agitated, allowing for optimal contact with surface contamination.
Its non-invasive nature also allows for an extended on-surface dwell time (up to 24 hours), meaning the solution has ample time to work its magic. This product can be used as a standalone treatment or in conjunction with GK Pro biocidal treatment.
A Step by Step Guide to removing Black Spots
GK Black Spot Remover is a powerful solution for eliminating stubborn black spots from your patio. Here's a step-by-step guide on how to use it:
1. Application:
Choose your applicator: Use either a pump-up sprayer or a watering can. Remember to rinse it thoroughly after use to prevent any residue.
Cover the surface: Apply the product generously to the affected area.
Agitate and soak: Periodically scrub the surface with a stiff brush to loosen the black spot. The longer you can keep the surface wet, the better the results. You may need to reapply the product to maintain a wet surface.
2. Rinsing:
Rinse thoroughly: Once you've allowed sufficient dwell time, rinse the surface with clean water. A hosepipe is ideal.
Pressure wash for optimal results: For the best possible finish, pressure wash the patio. Some people prefer to pressure wash before and after applying the product.
3. Spot treatment and repeat:
Target stubborn areas: For extremely heavy black spot buildup, you might need to repeat the process. However, you can also spot treat individual patches without treating the entire area again.
Tips:
Always follow the instructions on the product label for the most accurate application and usage information.
For severe cases, consider consulting a professional cleaning service.
By following these steps and using GK Black Spot Remover, you can effectively eliminate black spots from your patio and restore its original beauty.
Can I Prevent Black Spot from Returning?
Unfortunately there is no one-time solution to stop black spots from returning. The best way to stay on top of lichen is to have a regular maintenance schedule. However, there are some things you can do to keep black spots away for longer:
Keep your stone clear from debris such as leaves and soil. Ensure you are sweeping and washing your stone between treatments.
Use a mixture of 1 part bleach to 10 parts water on your stone between treatments to prevent the spread of lichen.
Summary
The best way to remove black spots from your natural stone is to use a biocide treatment such as GK Black Spot Remover. This specially formulated composition will effortlessly eliminate black spots, discolouration and microbiological contaminants on porous surfaces.
