DOFF steam cleaning is a specialist cleaning method used to safely and effectively clean a wide range of surfaces, particularly those that are delicate, historic, or require a non-invasive approach. It is one of the most advanced cleaning techniques available today and is frequently used for stone, brickwork, render, masonry, and heritage structures.

In this blog, we’ll explain exactly what DOFF steam cleaning is, how it works, and why it’s such a popular choice for both domestic and commercial cleaning projects — especially when appearance and surface preservation are top priorities.

What Does ‘DOFF’ Mean?

‘DOFF’ refers to a cleaning system developed by Stonehealth, a British company that specialises in heritage-safe cleaning equipment. The DOFF system uses high-temperature steam (up to 150°C) at low pressure to remove stubborn dirt, moss, algae, fungi, paint, and biological growth without damaging the underlying surface.

Unlike traditional pressure washers, which can be too harsh on delicate or porous materials, the DOFF system cleans with heat rather than force — making it ideal for sensitive surfaces.

How Does DOFF Steam Cleaning Work?

The DOFF system heats water to extremely high temperatures (usually between 100°C and 150°C) before it is delivered to the surface through a specially designed nozzle. Although the water exits as steam, it is applied at a relatively low pressure, which prevents surface erosion or damage.

Here’s a breakdown of the process:

1. Water is superheated using the DOFF machine’s internal burner system.
2. The steam is applied in a controlled manner using a handheld lance.
3. As the steam makes contact with the surface, it loosens and removes dirt, organic growth, paint residues, and more.
4. The surface is left dry within minutes, minimising the risk of water penetration or prolonged damp.

Because the steam evaporates quickly, there is no need for soaking or scrubbing, and the surface remains largely unaffected aside from being thoroughly cleaned.

What Can DOFF Steam Cleaning Be Used On?

DOFF cleaning is incredibly versatile and is suitable for a wide variety of materials and applications, including:

• Brickwork and stonework
• Heritage buildings and listed properties
• Monuments and memorials
• Render and facades
• Concrete and paving
• Graffiti removal
• Paint stripping
• Chewing gum and biological staining

It is especially useful in conservation settings, where maintaining the integrity of the original material is paramount.

Benefits of DOFF Steam Cleaning

Here are some of the key benefits that make DOFF cleaning a go-to solution for sensitive and high-value surfaces:

1. Non-Damaging to Surfaces

Because DOFF uses low pressure and high heat, it cleans without scratching, pitting, or removing the top layer of masonry or render — preserving the original appearance.

2. Highly Effective on Organic Growth

The intense heat kills moss, algae, fungi and spores at the root, helping to prevent regrowth and leaving surfaces sanitised without the need for harsh chemicals.

3. Eco-Friendly and Chemical-Free

In most cases, DOFF cleaning relies solely on superheated water, eliminating the need for abrasive or toxic chemicals. This makes it safer for the environment and surrounding areas.

4. Fast-Drying and Low Risk of Damp

The steam evaporates almost instantly, meaning the cleaned surfaces dry quickly. This significantly reduces the risk of water ingress and is ideal for older or porous buildings.

5. Ideal for Heritage and Conservation Projects

DOFF has been approved by Historic England and is widely used on Grade I and II listed properties due to its gentle yet effective nature.

Why Choose DOFF Cleaning for Your Property?

Whether you’re looking to restore the façade of a period home, remove graffiti from a listed wall, or clean algae-covered render without causing damage, DOFF steam cleaning offers a professional solution that traditional methods simply can’t match.

At Simple Clean, we provide expert DOFF steam cleaning services for homeowners, businesses, and organisations across the region. Our team is fully trained in operating DOFF systems and understands the correct approach for every surface type.

Trust Simple Clean for Professional DOFF Steam Cleaning

Choosing the right cleaning method is crucial when it comes to preserving the beauty and value of your property. At Simple Clean, we take pride in offering safe, reliable, and conservation-approved cleaning solutions using the DOFF system.

Experienced and trained technicians
Fully insured and equipped with the latest DOFF technology
Suitable for delicate and historic surfaces
Available across Croydon and surrounding areas
Tailored cleaning plans for each project

To learn more about our DOFF steam cleaning services or to request a free, no-obligation quote, please get in touch with us today.