1. What is GLEAN Green Clean used for?
GLEAN Green Clean is a powerful outdoor surface treatment that removes and prevents the growth of algae, moss, lichen, mould, and black spot. It is ideal for patios, driveways, block paving, tarmac, roofs, fences, conservatories, tennis courts, and other outdoor surfaces exposed to rain.
2. How does it work?
The specially formulated solution kills unwanted growth at the source, removing algae, moss, lichen, mould, and black spot. Once applied, it remains active, preventing regrowth for lasting results.
3. Which surfaces can I use it on?
GLEAN Green Clean is suitable for a wide range of surfaces, including:
• Wood and fencing
• Natural and man-made stone
• Concrete and tarmac
• Block paving
• Roof tiles and cladding
• Any outdoor surface exposed to rainfall
4. Do I need to scrub or rinse the surfaces?
No. GLEAN Green Clean is a “Wet It – Forget It – Won’t Regret It” treatment. Simply apply, leave to work, and the formula will remove growth over time. There’s no scrubbing, brushing, rinsing, or pressure washing required.
5. How do I apply GLEAN Green Clean?
1 Dilute the concentrate: 1 part Green Clean to 5 parts water.
2 Apply evenly to a dry outdoor surface using a standard garden sprayer.
3 Leave to work:
◦ Algae: Visible results usually within a few days
◦ Moss: Moss will turn brown and detach after a few days
◦ Lichen: Apply twice, 15 minutes apart, for thorough penetration
4 Ensure the product remains in contact with the affected area for best results.
Tip: Apply in cool, dry conditions above 0°C for optimal performance.
6. How long does it take to see results?
• Algae: Usually within a few days
• Moss: Detaches and browns in a few days
• Lichen: May take two applications to fully penetrate, with full results over time
• Mould or black stains: May take 1–3 months to fully disappear depending on severity
7. How much coverage does one bottle provide?
Coverage is approximately 100–200m² per 5 litres, depending on the surface type and porosity.
8. Can it prevent regrowth?
Yes. The formula remains active on treated surfaces, helping to prevent premature recontamination by algae, moss, lichen, and black spot.
9. Is it safe for plants and pets?
GLEAN Green Clean is formulated for outdoor surfaces. Always follow the safety data sheet instructions. Avoid spraying directly onto plants, and keep pets away from freshly treated surfaces until dry.
10. How should I store the product?
Store in a cool, well-ventilated place, away from direct sunlight. Keep the trigger spray or container closed when not in use.
11. Can it be used on roofs or vertical surfaces?
Yes. Once diluted and applied, it works effectively on vertical or sloped surfaces, including roofs, fences, and walls.
12. Is GLEAN Green Clean made in the UK?
Yes. GLEAN Green Clean is proudly made in Great Britain, ensuring consistent quality and performance.
