Patios, driveways, and garden paths are meant to look clean and inviting, but stubborn black spots can ruin their appearance. These unsightly marks often won’t budge with normal cleaning and can make even new paving look old and dirty.
If you’ve ever wondered how to remove black spots from your patio effectively, this guide explains what causes them, why DIY methods often fail, and how to get professional results with the right cleaner.
What Are Black Spots on Patios?
Black spots are caused by lichen, a tough little organism made of fungus and algae. Once it takes hold, it embeds itself deep into porous surfaces like sandstone, concrete, block paving, and even porcelain paving.
Unlike surface dirt or algae, lichen forms tiny root-like structures that dig into the stone. That’s why it’s so resistant to scrubbing, jet washing, or basic household cleaners.
Why Black Spots Are So Hard to Remove
If you’ve tried cleaning your patio before, you’ll know the usual methods don’t work:
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Pressure washing – may lighten the marks but rarely removes them completely.
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Bleach or vinegar – can help with algae, but lichen is much tougher and usually comes back.
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Household cleaners – simply aren’t strong enough to penetrate deep into the stone.
The result? A lot of effort for little reward — and the black spots soon return.
The Professional Solution: Shark Black Spot Remover
To truly get rid of lichen, you need a professional-strength patio cleaner that penetrates deep into the surface and breaks it down at the root.
That’s exactly what Shark Black Spot Remover does. It’s the most concentrated black spot cleaner on the UK market, trusted by both homeowners and professional exterior cleaners.
Why It Works So Well:
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Most concentrated formula – dilute 3:1, giving 20L of solution from just 5L.
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Fast results – starts working in just 30 minutes.
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Versatile – effective on sandstone, block paving, concrete, slate, porcelain, and more.
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Cost-effective – covers large patio or driveway areas with one container.
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Professional-grade – removes even the toughest lichen stains with minimal effort.
Step-by-Step Guide: How to Remove Black Spots with Shark Black Spot Remover
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Prepare the Area
Sweep away loose debris and wear gloves, goggles, and protective clothing. -
Dilute the Product
Mix 1 part Shark Black Spot Remover with 3 parts water.-
1L of product makes 4L solution.
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5L makes 20L solution.
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Apply to the Surface
Use a watering can, pump sprayer, or yard brush to apply evenly. Avoid run-off onto grass or plants. -
Leave to Work
Allow 30 minutes to 2 hours, depending on severity. For stubborn spots, give it the maximum contact time. -
Agitate (Optional)
Use a stiff-bristled brush on any heavily stained areas. -
Rinse Thoroughly
Hose down or use a pressure washer to reveal clean, refreshed paving.
Prevention Tips: Keep Black Spots Away
Once your patio is spotless again, here are some tips to keep it looking its best:
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Clean regularly, especially after winter or periods of damp weather.
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Don’t let moss and algae build up — they make paving more prone to lichen.
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Use a preventative outdoor cleaner every 8–12 months to keep surfaces protected.
Transform Your Outdoor Spaces
Black spots don’t have to be permanent. With the right cleaner, you can restore patios, driveways, and garden paths quickly and easily.
Shark Black Spot Remover is the ultimate solution for homeowners and professionals who want fast, effective results without wasting time on ineffective methods.
👉 Ready to restore your patio? Try Shark Black Spot Remover today and say goodbye to stubborn lichen for good.