How to soft wash concrete roof tiles

February 08, 2022

How to soft wash concrete roof tiles

A customer wanted to know what, in our experience, is the best way to soft wash concrete roof tiles.

We told him that it’s important to first determine if the concrete roof tiles have a surface coating. Some do, some do not.

If they are coated, click here to learn the principles of treating coated artificial slates, which are similar to the principles of treating coated concrete tiles. 

If they are not coated they will likely have had a "through-colour" dye added during manufacture, as in the photo above, in which case soft washing them is straight-forward.

Nowadays we treat nearly all roofs with Bio Cleanze (click here to visit our roof cleaning page which explains in detail) unless a customer has a particularly strong reason for wanting rapid results, such as preparing to move home.

In which case we would tackle it with the more labour-intensive process of treating with Lighting Cleanze.

Click here to view a time-lapse video of Ben treating a roof with Bio Cleanze – and watch the magic happen.

Click below to learn about Benz softwash biocides:

Bio Cleanze

Lightning Cleanze

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

Ben, Leo, Fiona, Stevie & Anthony


You can now order Benz softwash chemicals & equipment by phone:

GB (England, Scotland, Wales): 0800 70 74 222 

Ireland and other countries:
 00353 214 622 978

Lines open Monday - Friday, 9am – 5pm

The above numbers are for taking orders only (click here for tech support)

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

Can soft washing chemicals damage climbing ropes?
Can soft washing chemicals damage climbing ropes?

May 17, 2022

Is it safe to use a sodium hypochlorite (sh) based product – such as Benz Lightning Cleanze softwash biocide – with ropes, or will it damage them?

Click the link on this page to find out ...

View full article →

What are the uses & advantages of Benz Tornado Cleanze for soft washing?
What are the soft washing uses & advantages of Tornado Cleanze?

May 11, 2022

Why should you use Benz Tornado Cleanze, a powerful softwash cleaning gel? What are its uses and advantages?

Click the link on this page to find out ...

View full article →

Shadow stain remaining after soft washing
When should you tell customers about shadow ("ghost") staining?

May 03, 2022

Shadow, or "ghost" staining may sometimes remain after soft washing. Customers can misinterpret this as poor workmanship. But fortunately there's a simple solution that keeps everyone happy.

Click the link on this page to find out what it is ...

View full article →