Discover Resiblock Algae, Mould and Lichen Remover for your home
24th April 2026Green growth on paving is one of the most common problems homeowners face. Algae, mould and lichen spread across driveways, patios and paths, especially in shaded spots and through the damp autumn and winter months. As well as looking unsightly, they make surfaces slippery and unsafe underfoot. Resiblock Algae, Mould and Lichen Remover clears it away without scrubbing, rinsing or jet washing.
- Apply with a watering can and leave it to work, with no scrubbing, rinsing or jet washing
- Results are visible within 36 hours, with growth gone in 1 to 3 days
- Protects against regrowth for up to 9 months
- A 5 litre container treats up to 50m²
Why algae, mould and lichen grow on paving
Green growth thrives wherever moisture lingers. North-facing patios, paths under trees and areas that stay damp after rain are the first to turn green, and a wet autumn or winter gives it plenty of time to spread. Left untreated, it makes paving slippery. The HSE highlights contaminated surfaces as a common cause of slips and falls, so keeping paving clear matters for safety as well as appearance.
How Resiblock Algae, Mould and Lichen Remover works
Unlike traditional cleaners, this remover uses an eco-friendly dissolving technology that breaks down green growth gradually, in a similar way to how a weed killer works. There’s no physical effort involved.
- Apply with a watering canUsing a watering can with a rose attached, apply 1 litre of product per 5 to 10m², depending on how heavy the growth is.
- Leave it to workResults are visible within 36 hours, and the growth slowly disappears over 1 to 3 days. No scrubbing, rinsing or pressure washing is needed.
- Reapply if neededOn heavily affected surfaces, a second application may be required.
It then continues to work as a disinfectant, protecting against regrowth for up to 9 months.
Where can you use it?
The remover is water-based and safe to use on most water-safe surfaces, so one product can treat almost every hard surface around your home.
Paving
- Concrete block paving
- Concrete slabs and flags
- Natural stone
- Porcelain paving
- Tarmac
Around the home and garden
- Fencing, decking and sheds
- Walls, steps and roofs
- Garden furniture and terracotta pots
- Glass, UPVC and greenhouses
If you’re unsure about a surface, test the product on a small, hidden area first.
Key specifications
- Coverage5 to 10m² per litre
- Pack size5 litres (up to 50m²)
- Results visibleWithin 36 hours
- Regrowth protectionUp to 9 months
- FormulaWater-based, biodegradable
- ContainsNo acids or bleaches
- SafetyNon-flammable, non-corrosive
Planning to seal your paving afterwards?
The remover is designed to work alongside Resiblock sealers, and clearing green growth is the ideal first step before sealing. Once the growth has gone, pressure wash the area and let it dry fully before you apply a sealer. Sealing then helps stop algae taking hold again. Find the right product in our patio sealer range, or read our guide to the last patio clean before winter.
Clear the green the easy way
Order online, or find a Resiblock stockist near you.
Algae, Mould and Lichen Remover FAQs
How do I get rid of algae, mould and lichen on my patio?
The easiest way is to apply a dedicated remover with a watering can and leave it to dissolve the growth, with no scrubbing, rinsing or jet washing needed.
Green growth tends to appear on shaded or damp areas of paving and can make surfaces slippery and unsafe. Resiblock Algae, Mould and Lichen Remover shows results within 36 hours, clears growth over 1 to 3 days and protects against regrowth for up to 9 months.
Once your paving is clean, consider protecting it with a product from the Resiblock patio sealer range to help keep algae at bay for longer.
What surfaces can algae, mould and lichen remover be used on?
Resiblock Algae, Mould and Lichen Remover can be used on block paving, slabs, natural stone, porcelain and tarmac, as well as fencing, decking, walls, roofs and garden furniture.
It is designed to be safe on most water-safe surfaces, so one product can treat almost every hard surface around your home, from the driveway to the greenhouse. If you’re unsure, test it on a small, hidden area first.
Check the full details in the technical datasheet, or use the Resiblock Find a Stockist tool to buy locally.
How long does algae remover take to work?
Resiblock Algae, Mould and Lichen Remover shows visible results within 36 hours, with green growth disappearing over 1 to 3 days.
It works gradually, in a similar way to a weed killer, so there’s no need to scrub or rinse while you wait. Heavily affected surfaces may need a second application.
After treatment, it continues to protect against regrowth for up to 9 months. Order Resiblock Algae, Mould and Lichen Remover online.
Is algae remover safe to use around the garden?
Resiblock Algae, Mould and Lichen Remover is water-based, biodegradable and free from acids and bleaches, making it a gentler choice than many traditional paving cleaners.
It is also non-flammable, non-corrosive and low in VOCs. As with any product, follow the instructions and check the health and safety data sheet before use. The Royal Horticultural Society offers wider advice on gardening in ways that protect plants and wildlife.
Explore more sustainable options in the Resiblock green products range or read the Resiblock environmental policy.
How much algae, mould and lichen remover do I need?
Resiblock Algae, Mould and Lichen Remover covers 5 to 10m² per litre, so a 5 litre container treats up to 50m².
Lightly affected paving needs less product, while thick or established growth needs more and may need a second application. Measure the area first and allow for the level of growth.
For larger areas such as driveways, it’s an economical option. Contact Resiblock on 01268 273344 for advice on quantities.