Patio Black Spot Preventer For All Stone Types

Introduction

Keep patios, paths and decorative stonework looking their best year round with our Patio Black Spot Preventer. This robust treatment is designed for tradespeople and homeowners who want durable protection against black staining and colour changes on stone surfaces.

Features

• Compatible with all stone types
• Size: 2.5 litre container, treats up to 50 m² when diluted
• Proactive stain prevention that stops black spots returning
• Removes and prevents green and red algae stains, typically within 3 to 5 days
• Safe to walk on once dry; pet friendly after drying
• Simple to apply with a garden sprayer; dilution guidance included
• Maintains the natural colour and appearance of stone
• Effective for up to 12 months with annual application
• Helps keep surfaces less slippery by controlling algae growth

Application guide

1. Choose a dry day with no rain forecast for at least 48 hours.
2. To treat 20 m², fill a 5 to 7 litre garden sprayer with 3 litres of water. Add 1 litre of Patio Black Spot Preventer, always adding the Preventer to water to avoid bubbling.
3. Apply generously by spraying evenly across an area no larger than 20 m² until saturated (four by four metres).
4. For larger areas, mix a fresh solution and repeat until all paving is covered.
5. Allow to dry naturally; do not rinse off.
6. Maintenance tip: If green algae appears in shaded or north facing areas during the 12 months after treatment, reapply to those sections for ongoing protection and safety.

Benefits

Using the Patio Black Spot Preventer once a year helps prevent black staining from returning, reducing the need for intensive cleaning again soon after. It protects the natural colour and appearance of stone while keeping patios and pathways safer and easier to maintain. The treatment also targets algae growth, making surfaces less slippery and more pleasant to use. Once dry, the product is pet friendly, allowing reliable use of the area with minimal disruption to daily work or site routines.