Actiwash Pro is a professional–grade, nearly pH–neutral biocide designed to effectively remove and control organic stains—such as red, green, and dark algae, mould, fungi, and mildew—on various exterior surfaces. As a more concentrated version of Actiwash Domestic, it is intended for professional use. Its powerful antimicrobial properties not only cleanse but also slow down recontamination, providing long–lasting results. Actiwash Pro is bleach–free and safe for application on virtually any natural or synthetic building material.
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​Actiwash Pro is a highly effective, nearly pH-neutral biocide formulated for professional use to remove and control organic staining—such as red, green, and dark algae—on various exterior surfaces. This concentrated solution (5 liters making up to 255 liters) is bleach-free, biodegradable, and hard water resistant, ensuring safe application on virtually any natural or synthetic building material. Its powerful antimicrobial properties not only cleanse but also slow down recontamination, providing long-lasting results. ​
Key Features:
Concentrated Efficiency: 5 liters yield up to 255 liters of solution.​
Surface Preservation: Cleans and preserves exterior surfaces without bleaching.​
Environmentally Friendly: Biodegradable and chlorine-free formula.​
Versatile Application: Suitable for use on nearly all building surfaces.​
Long-Lasting Protection: Provides residual protection for up to 3 years, depending on location. ​
How It Works: Actiwash Pro targets the proteins and cell membranes of microorganisms, causing the release of nitrogen and phosphorus from cells. When applied and left on the surface, natural weathering processes eliminate the dead biofilm staining. ​
Self-Cleansing Timeline:
Green Algae Stains: Typically disappear within a week.​
Red Algae Stains: Usually clear within 2-3 weeks.​
Dark Stains: May take several months to vanish, with gradual lightening observed in the initial weeks and months post-treatment. ​
Application Notes:
Ensure the surface is free from inorganic dirt before application.​
Apply to a dry surface when temperatures are above 7°C.
Water surrounding plants and grass before and after nearby surface treatment to protect them. ​
Acti wash Pro is approved by the Department of Agriculture, Food and the Marine (PCS Number: 102639), ensuring compliance with safety and efficacy standards. ​
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Actiwash Pro Biocide – Removes Red & Green Algae, Mould, Fungi
One 5 litre container produces up to 255 litres of solution, offering exceptional coverage for commercial and residential cleaning.
Safe for use on delicate surfaces. Cleans without bleaching or damaging natural or synthetic building materials.
Effectively treats green, red, and dark organic staining on exterior walls, roofs, paths, render, concrete, stone, and more.
Environmentally friendly formula that maintains strength even in hard-water conditions.
Provides ongoing antimicrobial action, helping prevent recontamination for up to 3 years depending on exposure and location.
Registered and approved by the Department of Agriculture, Food and the Marine (PCS Number: 102639), ensuring reliable safety and performance.
Compatible with render, tarmac, brick, concrete, stone, roofs, PVC, cladding, timber, and other construction materials.
We’ve put together answers to the most common questions and answers to help you get the best results. From how to apply it to safety and coverage, you’ll find everything you need to know below.
Actiwash Pro is safe for nearly all exterior building materials, including render, brick, stone, concrete, roof tiles, cladding, timber, and PVC. It does not bleach or damage surfaces.
Green algae typically clears within 1 week, red algae within 2 to 3 weeks, and darker staining may take several months, with visible lightening beginning shortly after application.
Dilute according to instructions, apply to a clean, dry surface above 7°C, and leave it to work. Simply allow natural weathering to remove the dead biofilm; no rinsing or scrubbing is required.
Yes, when used correctly. Plants and grass should be watered before and after nearby application to prevent absorption of the product.
No. The formula is chlorine free, nearly pH neutral, and biodegradable, making it much safer for surfaces and the surrounding environment compared to bleach-based cleaners.
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