Brickwork across London is exposed to constant pollution, moisture, biological growth, and weathering. Traditional pressure washing can damage bricks, dislodge mortar, and cause long-term structural issues.
This is where DOFF Steam Cleaning stands out as the safest and most effective cleaning method for heritage and modern properties alike.
In this blog, we explore what DOFF cleaning is, how it works, and why it has become the go-to solution for conservation experts, property owners, and restoration specialists across London.
What Is DOFF Steam Cleaning?
The DOFF system is a specialist brick and stone cleaning machine designed by Stonehealth.
Unlike traditional pressure washers, DOFF uses:
- Superheated water at 150°C
- Low pressure
- High temperatures, not force, to clean surfaces safely
This combination allows DOFF to remove biological growth, dirt, and contaminants without damaging the brick surface or mortar joints.
How DOFF Steam Cleaning Works
The DOFF system heats water to extremely high temperatures and delivers it through a controlled nozzle.
This produces:
- Dry steam, not liquid water
- Gentle application, reducing risk of water penetration
- Highly effective cleaning without chemicals
The steam instantly kills biological spores and lifts contaminants away from the surface, leaving clean, natural brickwork.
What Can DOFF Clean?
DOFF is suitable for a wide range of materials, including:
- Brick
- Stone
- Concrete
- Terracotta
- Granite
- Render
- Heritage façades
It safely removes:
- Moss, algae, lichen, mould
- Traffic pollution
- Soot and carbon staining
- Natural discolouration
- Paint residue
- Bird fouling
Because DOFF cleans without abrasives or chemicals, it is fully approved by:
- English Heritage
- Historic England
- National Trust
Benefits of DOFF Steam Cleaning
1. No Damage to Brickwork
The low pressure ensures bricks and mortar stay intact.
2. Eco-Friendly
No harsh chemicals are needed.
3. Fully Approved for Listed Properties
Perfect for Victorian, Georgian, and Edwardian homes.
4. Kills Biological Growth at the Root
Prevents regrowth for longer compared to cold-water cleaning.
5. Safe for Interior & Exterior Use
Suitable for conservation zones, façades, and delicate structures.
When Should You Use DOFF Steam Cleaning?
DOFF is ideal when:
- Your brickwork is stained or polluted
- You want to prepare the wall for repointing
- You need gentle cleaning for a listed building
- Moss, algae, or mould is present
- You need paint or coating residue removed
- You want a breathable, chemical-free cleaning method
Final Thoughts
DOFF Steam Cleaning is one of the most advanced and conservation-friendly cleaning solutions available in the UK.
Whether you’re restoring a Victorian home in Camden, cleaning a modern façade in East London, or treating a heritage site in Westminster, DOFF delivers outstanding results while protecting your brickwork.
