Description

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BioDefend Concrete Moss and Mould Killer is a professional-grade outdoor cleaning solution designed to help manage moss, mould, lichen and algae on concrete and other compatible exterior surfaces. It is suitable for property maintenance, garden paths, driveways, paving, walls, patios and outdoor areas affected by moisture and organic growth.

Why choose BioDefend Concrete Moss and Mould Killer?

Outdoor concrete and paving can develop green growth, dark marks and slippery areas when exposed to rain, shade and damp conditions. BioDefend provides a practical treatment for customers who want to refresh the appearance of exterior surfaces and reduce visible organic growth as part of a regular property-maintenance routine.

The formula is designed for professional and household outdoor cleaning applications. It can be used on compatible concrete, paving and masonry surfaces when diluted and applied according to the product instructions. BioDefend is suitable for homeowners, landlords, gardening services, property managers, commercial cleaners and maintenance teams.

Key benefits

• Designed for moss, mould, lichen and algae on exterior surfaces
• Suitable for compatible concrete and paving areas
• Useful for paths, driveways, patios and outdoor walls
• Helps refresh the appearance of weathered surfaces
• Suitable for household and professional property maintenance
• Available in 2 litre and 5 litre sizes
• 20 litre commercial quantities may be available for larger requirements

Where can you use this moss and mould killer?

BioDefend Concrete Moss and Mould Killer can be used on compatible outdoor concrete, paving and masonry surfaces. Common applications include concrete paths, driveways, patios, outdoor steps, brickwork, retaining walls, garden walls and other exterior areas where moss, mould, lichen or algae has become visible.

Recommended outdoor applications

• Concrete driveways and paths
• Paved patios and outdoor courtyards
• Brick and masonry walls
• Garden paths and retaining walls
• Outdoor steps and walkways
• Commercial property exteriors
• Other compatible hard outdoor surfaces

How to use BioDefend Concrete Cleaner

Remove loose leaves, dirt and surface debris before application. For heavy growth, mix one part BioDefend with four parts water. For light growth or routine maintenance, mix one part BioDefend with nine parts water. Always confirm the correct dilution on the product label before use.

Apply the diluted solution with a suitable sprayer or watering can until the affected surface is evenly saturated. Allow the product to work naturally with sunlight and rain, following the instructions provided. Do not rinse unless the product label recommends rinsing for the specific surface or application.

Visible improvement may appear within several days, while the full effect can take approximately two to four weeks depending on the level of growth, weather conditions, surface porosity and exposure to sunlight. Heavily affected areas may require a repeat application.

Important surface-testing advice

Always test BioDefend on a small, hidden area before treating a large surface. Surface results can vary according to the age, condition, colour and porosity of the concrete or masonry. Protect painted surfaces, delicate materials, ponds, waterways, ornamental plants and sensitive garden areas from spray drift and runoff.

Safety information

BioDefend Concrete Moss and Mould Killer is intended for suitable exterior surfaces only. Wear protective gloves and eye protection when mixing or applying the product. Avoid breathing spray mist and ensure suitable ventilation during use. Keep children and pets away from the treated area until it is safe to access.

Do not mix BioDefend with other cleaning chemicals. Keep the container closed when not in use and store it in a cool, dry place away from direct sunlight, heat and incompatible substances. Always read and follow the product label and safety instructions. For general information about handling hazardous substances in New Zealand, visit WorkSafe New Zealand hazardous-substances guidance.

Suitable for household and commercial use

BioDefend is suitable for homeowners who want to maintain outdoor paths and paved areas, as well as professional users working on larger properties. The available 2 litre and 5 litre sizes are practical for regular outdoor care, while larger 20 litre quantities may suit commercial cleaning, gardening and property-maintenance requirements.

Regular inspection and timely treatment can help keep outdoor surfaces looking cleaner and more presentable. For more surface-care and outdoor cleaning products, visit our New Zealand shop collection.

Frequently asked questions

What does BioDefend Concrete Moss and Mould Killer treat?

It is designed for visible moss, mould, lichen and algae on compatible concrete, paving, masonry and other exterior surfaces.

How long does it take to work?

Early improvement may appear within days, while the full result can take approximately two to four weeks depending on weather and surface conditions.

Should the surface be rinsed?

Follow the product label. The treatment can generally be allowed to work naturally with sun and rain, but some surfaces or applications may require rinsing.