How to Clean Block Paving (And Keep It Looking Like New)
Block paving is a popular choice for driveways, patios and garden paths across the UK — but it does require regular maintenance to keep it looking its best. Over time, black spots, green algae, moss and general grime can build up, making even well-laid block paving look tired and neglected.
The good news is that cleaning block paving doesn't have to mean hours of back-breaking scrubbing or expensive professional treatments.
Why Does Block Paving Get Dirty?
Block paving is particularly susceptible to staining because the joints between blocks trap moisture, creating the perfect environment for algae, moss and black spot fungus to take hold. North-facing or shaded driveways are especially prone to this.
Pressure washing can help, but it often dislodges the sand between blocks and rarely removes deep-set black spot staining completely.
What You'll Need
- A garden sprayer (5–7 litres)
- A pressure washer for rinsing
- Patio Black Spot Remover For Block Paving
- Patio Black Spot Preventer (for ongoing protection)
Step-by-Step: How to Clean Block Paving
- Clear the area — remove vehicles, furniture and any loose debris.
- Apply the Black Spot Remover — pour into a garden sprayer and apply generously across the surface.
- Leave to work — allow 2 hours for the formula to penetrate deep into the block paving.
- Rinse off — lightly pressure wash the area. Avoid using excessive pressure to protect the sand between blocks.
- Repeat if needed — older or heavily stained paving may need a second treatment.
How to Prevent Block Paving Staining
Once clean, apply Patio Black Spot Preventer For All Stone Types annually. It removes algae within 3–5 days and prevents black spot from returning, keeping your block paving clean and safe with minimal effort.
Is It Safe for Pets, Plants & the Environment?
Yes — our Patio Black Spot Remover For Block Paving is acid-free, biodegradable and pet-safe. It can be rinsed onto lawns and flower beds without causing any harm.
Coverage Guide
- 2 Litre — treats up to 10m²
- 4 Litre — treats up to 20m²
Coverage is based on paving around 3 years old. Older or heavily stained surfaces may require additional treatment.
Ready to restore your block paving? Shop Patio Black Spot Remover For Block Paving and Patio Black Spot Preventer.