BIOCIDAL WASH – Deep action softwash biocide with residual protective power


5 Litres (5x1L) = 63.99 euros (£56)
20 Litres (4x5L) = 46.50 euro (£41) per 5 Litre container
40 Litres (8x5L) = 41.25 euro (£36.50) per 5 Litre container
100 Litres (20x5L) = 40.55 euro (£36) per 5 Litre container
200 Litres (40x5L) = 38.43 euro (£34) per 5 Litre container
(£GBP prices are approximate and vary with the exchange rate)


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  • Estimated DELIVERY: 4-10 working days
  • Non-returnable & Non-refundable (scroll down for use-by info)



Benz Biocidal Wash controls biological growths that cause red, green, yellow and black staining – so surfaces stay cleaner, for longer


Watch the short (30 secs) video above to see the dramatic results of softwashing with Benz Biocidal Wash



Benz Biocidal Wash is the strongest government approved softwash biocide of its type available in the UK and Ireland with a full 50% active ingredient (DDAC)


Benz Biocidal Wash is fully approved by:


  • The Irish Pesticides Control Service (PCS) for use in Ireland. Certificate number: 98070
  • UK Health & Safety Executive (HSE) for use in the UK. Certificate number: 9936
Conforms to the Global Harmonised System (GHS) for product labelling.
Fully compliant with "REACH" (Registration, Evaluation, Authorisation & restriction of CHemicals) regulations for cleaning exterior hard surfaces.


Click here to read detailed technical information about Benz Biocidal Wash


Benz Biocidal Wash is safe, kind to surfaces, and more cost-effective than power washing

“Our paths were washed and treated with Benz Biocidal Wash in November 2013. Now 16 months on they are still immaculate and look like they were just done yesterday! There were no streaks like we used to have when we power-washed ourselves and no splashing on the plinth or walls. A truly fabulous job and I highly recommend it.” Aoife Barry, Cork, Ireland

Click here if you've read enough and want to order Benz Biocidal Wash

Benz Biocidal Wash is a high quality, professional-grade softwash product (too strong to be sold to the general public)

  • The powerful active ingredient is a similar purity to that used to disinfect hospitals
    • Can be used in conjuntion with power washing as a post-treatment, or as a stand alone softwash solution
    • Fully biodegradable
    • Does not bio-accumulate
    • Ph neutral, so safe for materials and gentle on people
    • Safe for children and pets once dry
    • Non-bleaching (contain no bleach or acids)
    • Not affected by hard or mineralised water
    • Harmless to all known building materials
    • Can be used as a pre-painting primer to kill algae and mould spores
    • A highly effective wood preserver that helps control wet and dry rot on timber buildings, fences and decking
    • Soaks deep into porous surfaces – killing the micro-organisms responsible for unsightly discolouring, and potential structural damage – because of its low surface tension, which makes it an excellent "wetting agent".
    • Up to 8x stronger than biocides sold to the general public
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    Bleach and phosphate-free, with a neutral pH


    Historic buildings: Benz Biocidal Wash – along with Benz Blackwash – is a powerful and yet non-aggressive way to care for the surfaces of our historic properties. It contains no solvents or compounds that could adversely affect the materials or coatings used in these valuable old buildings.

    “I am truly impressed by just how clean the pavement slabs are in my drive. I got it cleaned last July and it is now long passed Easter – and following the winter weather it is still unbelievably clean.

    "The products used to clean the drive are second to none, so gentle, non-abrasive but remarkably effective. Previously I had my drive power-washed and found that while it was certainly clean afterwards, it did not last through the winter. The whole process was quite harsh and even moved some of the paving slabs. I cannot recommend this product – Benz Biocidal Wash – highly enough." Muireann Curtin, Cork, Ireland

    Click here if you've read enough and want to order Benz Biocidal Wash

    Prevents algae, lichen, mould and fungi damage – allowing surfaces to naturally rejuvenate


    Effective and safe to use on:

    • Slate and tile roofs
    • Concrete paths
    • "Cobblelock" type paving (we recommend power washing first to clear out the weeds)
    • Painted surfaces
    • Tarmac drives
    • Timber decking, fencing, and sheds
    • Plain and coloured render


    Just spray and walk away!

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    How to Calculate the Coverage of Benz Biocidal Wash

    Please note: We give the following information for those new to softwashing to have a starting point when calculating the amount of product that will be needed for a softwashing contract.

    I actual practice multiple factors need to be taken into account, such as the type of material being treated, the type of infestation, how long the infestation has been allowed to grow into the surface, and so on.

    In general ...

    1 Litre of neat Biocidal Wash makes 40 litres of mix for winter work (40:1) and 50 litres in the summer (50:1).

    1 Litre of mix will cover approximately 4 square metres. Therefore you can expect 40-50 litres of mix to cover 160 - 200 square metres.

    5 litres will clean approximately:

    • Five average driveways and paths around a house
    • Or, three average gable ends
    • Or, the walls of one average house
    • Or, one average roof

    Obviously, bear in mind that in reality there is no such thing as an "average" property or an average surface. We give the above information – and the data in the application guide – so that those new to softwashing can get an approximate idea of the area Benz Biocidal Wash can cover.

    Minimum application temperature:
    We recommend using Biocidal Wash at temperatures no lower than 7 degrees C, as results can be inconsistent below this point.


    Cleans – Sanitises – Disinfects

    Click here if you've read enough and want to order Benz Biocidal Wash

    Container sizes

    You can buy Benz Biocidal Wash in 1 litre and 5 litre containers.

    NOTE: Benz containers are industrial strength and have been drop-tested. This means they can withstand the sometimes harsh conditions of on-site use, and storage in vans along with other equipment, without splitting.

    Some companies cut corners by supplying weaker containers to make their products cheaper. But we believe that the potential health and safety hazards these create, along with the financial cost of leakages, mean they are a false economy.


    • For best results store at approximately 20 degrees C (room temperature) and use within 2 years of manufacturing date.
    • Always store Benz Biocidal Wash in the original containers.


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    Delivery Restrictions

    Due to restrictions placed upon us by shipping companies, we are unable to deliver to UK offshore locations through our standard shipping arrangements. These include (but are not limited to):

    • Isle of Man
    • Isle of Wight
    • Channel Islands
    • Scottish Islands

    Orders placed for these locations, and not previously cleared by us, will unfortunately have to be cancelled. If you have a specific item that you need and live within one of these areas, feel free to contact us and we'll do our best to help you, but do note that surcharges will have to apply.


    Health & Safety Guidelines

    • Do not pour water into undiluted Biocidal Wash. Half-fill your tank with water, add the required quantity of Biocidal Wash, then complete filling your tank with water.
    • NEVER mix Blackwash and Biocidal Wash together as toxic chlorine gas may be produced.
    • Always thoroughly rinse application equipment and tanks before changing from Blackwash to Biocidal Wash and vice-versa.
    • The public, including children and animals, must be excluded by barriers, tape and warning signs from areas where spraying, mixing and storage of chemicals is taking place and must continue to be excluded from the working area until the area is made safe. If a human or animal comes into contact with a softwash chemical the area of skin contact should be immediately rinsed with copious quantities of fresh water.

    • Surfaces on which children and animals may walk should be treated with Benz Biocidal Wash at a maximum dilution strength of 50:1 – children and animals should be prevented from gaining access to the treated area until the surface is completely dry.
    • Wear appropriate respiratory protection if working in confined, poorly ventilated areas.

    The purchaser and end users are responsible for ensuring that our products are used in line with industry Approved Codes of Practice. All operators must be competent in using and applying our products. Always read and comply with the instructions for use on the label, and product information on this website, before use. The purchaser and end user of these products are responsible for complying with the PCD/HSE code for the safe use of chemicals.

    Safe working practices: When working with chemicals always keep your equipment and personal protection equipment (PPE) clean. Take care to protect yourself from accidental contact with your eyes and skin. We recommend wearing protective gloves, clothing that covers your whole skin surface, and a full face visor that includes protection for your hair. Wash all PPE with fresh water at the end of the working day and before eating, drinking, or smoking.

    Always treat a small, obscure test patch on a customer's property before using any chemical cleaning product. Obtain your customer's agreement that the result is acceptable and get their permission to continue before cleaning the entire property.

    Always adhere to the SDS. Follow the product labelling instructions, and the product information supplied on this website, to ensure protection of our environment and avoidance of injury to humans and animals.



    • EUR/GBP prices – use toggle button (top/foot of page depending on device)
    • All prices ex Vat – receipts in EUR or GBP
      To get a GBP receipt, set prices to GBP before Checkout
      To get a EUR receipt, set prices to EUR before Checkout


    Benz Biocidal Wash - softwash DDAC biocide


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