Bio Cleanze, Lightning Cleanze, Tornado Cleanze and Perma Cleanze can be used on natural stone, manufactured stone, hard stone and soft stone surfaces.
Bio Cleanze is our preferred treatment. It is much easier to apply and continues working over time. While the results are not immediate and may take several months to fully develop, it is a very effective treatment and often delivers excellent long-term results.
Always test a small area first, particularly when using Lightning Cleanze or Tornado Cleanze. This will confirm compatibility with the surface and give you a good indication of the expected cleaning results.
We supply two core softwash biocides: Bio Cleanze and Lightning Cleanze.
Use Tornado Cleanze as a targeted follow-up treatment to remove stubborn black, green, red and yellow staining caused by algae, lichen, moss and mould.
Apply Tornado Cleanze to vertical stone surfaces where you need a product that clings and stays in place without running off.
Download the Product Documentation Pack for SDS, PDS, dilution rates and application methods.
The photo below shows Bio Cleanze at 30:1 after 4 months on render, concrete kerb and stone chippings
Use Lightning Cleanze and Tornado Cleanze on non-porous stone such as granite when you need fast, effective results.
Use Bio Cleanze on soft, porous stone such as sandstone. It penetrates deeper into the surface and targets spores below the surface.
Bio Cleanze also provides longer-term protection against re-colonisation compared to sodium hypochlorite treatments alone.
Soft washing black limestone
Black limestone weathers over time. When you remove algae, you may expose faded areas beneath, which can create variation in appearance.
Limestone often contains iron, which can show as black or orange staining. After cleaning, the surface may look worse initially before it evens out over time.
Consider the following:
- How the slabs were laid (e.g. spot-bedded can show patching)
- The base material (concrete, sand, gravel or soil)
- Drainage conditions
- Seasonal changes in appearance
Quick tip: Always test a small area first and confirm results with your customer.
Re-treatment and maintenance
After cleaning with Lightning Cleanze or Tornado Cleanze, leave the surface for several months before re-treating.
Bio Cleanze extends this period further, but timing depends on the environment, surface type and surrounding conditions.
After the initial clean, move your customer onto a Clean & Maintain programme to keep surfaces consistently clean and generate repeat work.
We hope that was helpful and wish you all the best in your soft washing business,
Team Benz
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