Zero surface damage
DOFF operates at low pressure, helping protect delicate substrates including heritage stone, brick, terracotta and tile from etching, cracking or surface damage.
Specialist DOFF steam cleaning
Restore your building’s original glory
Professional DOFF stone cleaning for delicate brick, stone, masonry and facade restoration across London, Kent and the South East.
More than just a clean
Safe, effective facade cleaning without surface damage
When it comes to cleaning delicate stone, brick and masonry, traditional high-pressure washing can cause irreversible damage. That is why So Clean Commercial Services Limited uses the Stonehealth DOFF Integra System — a specialist cleaning system designed for safe, effective stone and facade restoration.
From modern commercial offices to historic buildings and monuments, our team provides a tailored approach that removes years of grime without compromising the structural integrity of your property.
What is the DOFF cleaning system?
The gentle power of superheated steam
The DOFF system is unlike standard exterior cleaning methods. It uses superheated water vapour, reaching temperatures of up to 150°C at the nozzle end.
This combination of high heat, low pressure and minimal water volume melts away surface contaminants while protecting the original substrate. The result is a clean, refreshed surface without harsh chemicals or unnecessary water saturation.
150°C superheated steam
Low pressure surface-safe cleaning
Chemical free no harsh biocides
The DOFF advantage
Cleaning without compromise
DOFF is ideal where standard pressure washing is too aggressive, chemical treatments are undesirable, or the building surface requires a more controlled restoration method.
150°C superheated steam
Superheated water vapour reaches temperatures of up to 150°C at the nozzle end, helping to lift grime, biological matter, paint and coatings effectively.
100% chemical free
The system relies on superheated steam rather than harsh chemicals or biocides, making it suitable for sensitive buildings, public spaces and environmentally conscious projects.
Heritage approved approach
DOFF is widely used where careful cleaning is essential, including listed buildings, historic facades, monuments and conservation-led projects.
Rapid drying
Using low water volumes, surfaces are not saturated. This helps cleaned areas dry quickly and reduces disruption around the property.
Suitable applications
For commercial, heritage and specialist exterior cleaning
The DOFF system is particularly useful where building appearance, substrate protection and public safety all matter. It can be used as part of planned maintenance, facade restoration, graffiti removal or sensitive heritage cleaning projects.
- Listed buildings and heritage properties
- Commercial offices and business premises
- Stone, brick, masonry and terracotta facades
- Public buildings, schools and healthcare settings
- Monuments, entrances, steps and external walls
- Graffiti, algae, moss, soot and grime removal
Our approach
A tailored service from survey to completion
Site assessment
We assess the building material, staining, access requirements and surrounding environment before recommending the best cleaning method.
Controlled test area
Where appropriate, we can carry out a test patch to demonstrate expected results and confirm the safest cleaning approach.
Professional cleaning
Our trained team uses DOFF equipment to remove grime, biological growth, coatings or staining with low-pressure superheated steam.
Clean, dry finish
Because the system uses minimal water volume, surfaces dry quickly and disruption to your building or site is kept low.
Download the DOFF brochure
Want more information about DOFF cleaning?
Fill in your details below to access the So Clean DOFF Cleaning System brochure and find out how superheated steam cleaning could help restore your property.
Ready to transform your facade?
Speak to So Clean about DOFF stone cleaning
Get in touch to arrange a site assessment and discuss the safest, most effective cleaning solution for your building.
