Do you know the best time of year to softwash concrete paths & patios?

January 05, 2022

Do you know the best time of year to softwash concrete paths & patios?

Benz clean & maintain softwash treatment systems are fantastic for cleaning and then keeping the treated surfaces permanently clean all year. 

Surfaces treated by soft washing, or post-treated after power washing, will stay clean far longer than is possible through other cleaning methods, because soft washing kills the algae spores that power washing alone cannot kill. 

However one of the nuances of soft washing when maintaining previously cleaned horizontal surfaces, concrete paths and patios in particular, and keeping them clean all year round,  is knowing how to deal with the occasional flare up of green algae.

A flare-up of green algae can look seriously dramatic, so your customers need to have the situation explained to them in advance, so they know what to expect and don't start thinking that you've done a bad job.

In the video below Ben shows a couple of examples, outlines the reasons why algae flare-up happens, and explains how to best manage your customers expectations.



Problems that can arise when soft washing horizontal surfaces

    1. Green algae re-appears only a few months after treating a concrete horizontal surface such as a path or patio.

    2. Dilution strength is limited to 50:1 on surfaces used by children and animals (compared to up to 20:1 that is possible on roofs and walls), which reduces the time that residual protection against re-colonisation can last.

    3. Because of frequent dilution by rain, and therefore the reduced ability of the surface to drain and dry, residual protection against re-colonisation will be relatively limited compared to a roof or wall that is able to drain and dry quickly.

Solutions to the above problems

  1. Tell your customer in advance (when quoting) that there may be a flare-up of green algae after only a few months, often in November, but this will only be only light.

  2. Tell your customer that you can return to treat the flare-up with Benz Bio Cleanze for a nominal fee, or build this into your original quote and position as a free re-treatment.

  3. Offer your customer a "Clean & Maintain" ongoing programme to keep their property permanently clean.


We hope this information is helpful and sincerely wish you great success in your soft washing business,

Ben, Leo, Fiona, Stevie & Anthony


Click here to explore all Benz softwash cleaning chemicals & equipment

Benz Softwash Bio Cleanze DDAC biocide & Benz Softwash Lightning Cleanze SH sodium hypochlorite biocide

Leave a comment

Comments will be approved before showing up. Please revisit to read our response.

Also in Benz Trade Tips

Great news for GB (England, Scotland, Wales) soft washing contractors
Great news for GB (England, Scotland, Wales) soft washing contractors!

January 18, 2022

GB customers can now checkout directly in £GBP. To make your life easier and simpler, we've created a website just for soft washing contractors in England, Scotland and Wales.

Click the link on this page to learn more and visit

View full article →

How to run a soft washing business in cold winter weather
How to run a soft washing business in cold winter weather

January 12, 2022

Soft washing can be carried out all year round when the temperature is not freezing or near freezing. The main thing to consider is that softwash chemicals will take longer to produce their full effect in cold conditions.

Click the link on this page to learn how to stay in business through a cold winter ...

View full article →

Do you know how to soft wash walls covered in Ivy?
How to soft wash walls covered in Ivy, without killing the ivy!

December 22, 2021

A customer asked us: "My customer wants a wallsof their house soft washed but it's covered in ivy. What product can I use to treat the wall without killing the ivy, and how?"

Click the link on this page to find out what we told him ...

View full article →