N-Virol Algae & Lichen Killer Path & Patio Cleaner 5L

£25.94

Powerful algae, moss and lichen killer for patios, roofs and driveways. Fast-acting concentrate with long-lasting protection and no scrubbing needed.

N-Virol Algae & Lichen Killer Path & Patio Cleaner 5L Hi-Ace

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+ Product Description

N-Virol Algae & Lichen Killer Path & Patio Cleaner 5L Concentrate is a powerful, professional-grade concentrated biocide designed to eliminate and prevent algae, moss, lichen, mould, and mildew on a wide range of exterior and interior hard surfaces. Ideal for homeowners, landscapers, facilities managers, and commercial cleaning professionals, this high-strength formula delivers fast, reliable results with minimal effort.

Formulated with Didecyldimethyl Ammonium Chloride, this advanced algae and lichen treatment works quickly on contact to kill organic growth within 2–4 days, with continued cleaning action as natural weathering breaks down dead matter. Unlike harsh bleach or acid-based cleaners, N-Virol provides effective surface cleaning without damaging masonry, stone, concrete, or tarmac surfaces.

This highly economical 5L concentrate dilutes to produce up to 100 litres of ready-to-use solution, offering coverage of up to 500m² depending on contamination levels. It is suitable for patios, driveways, roofs, paths, decking, brickwork, gravestones, tennis courts, artificial grass, and more. Once applied, it helps restore surfaces while reducing slipperiness and preventing regrowth over time.

Designed for ease of use, it can be applied using a sprayer, watering can, brush, or mop, making it suitable for both domestic and professional applications. No scrubbing is required, saving time and labour while delivering long-lasting results.

Features & Benefits

Fast-acting algae, moss & lichen removal within 2–4 days
Long-lasting protection helps prevent regrowth
No scrubbing required after application
Professional-strength concentrated formula
Safe for most exterior hard surfaces
Contains no bleach or harsh acids
Highly economical 5L concentrate (up to 500m² coverage)
Suitable for indoor and outdoor use
Improves surface safety by reducing slipperiness
Easy application via sprayer, brush, mop or watering can
Biodegradable, surface-friendly formulation
Ideal for domestic and professional use

Applications

Patios and paving slabs
Driveways and tarmac
Roof tiles and felt roofs
Brickwork and stone walls
Concrete paths and steps
Decking and fencing
Gravestones and memorials
Tennis courts and play areas
Artificial grass
Greenhouses and exterior glass

Technical Specification

Specification	Details
Product Type	Algae, Moss & Lichen Killer Concentrate
Pack Size	5 Litres
Active Ingredient	Didecyldimethyl Ammonium Chloride
Coverage	250m² – 500m²
Dilution (Normal)	50ml per 1L water (1:19)
Dilution (Heavy)	100ml per 1L water (1:9)
Dilution (Severe)	1:4 mix
Application Methods	Sprayer, watering can, brush, mop
Use Areas	Exterior & interior hard surfaces
Effect Time	2–4 days initial results
Weather Conditions	Dry, above 5°C, no rain for 24 hours
Shelf Life	Up to 2 years (sealed)
Formulation	Water-based concentrate
Compliance	Biocide Regulation compliant