The safest way to clean historical buildings, monuments delicate stonework and homes


Doff Cleaning Services


Steam Cleaning for Stone, Brick, Render and Concrete.


Eliminate unsightly stains, algae, mold, carbon buildup, and lichen with our low-pressure superheated water cleaning system.

What is DOFF cleaning? 

DOFF cleaning is a specialized cleaning method that uses superheated, low pressure water to safely and effectively clean a variety of surfaces.


The DOFF system heats water to high temperatures of 150 degrees Celsius, creating superheated steam. This superheated steam is then applied to the surface being cleaned, gently lifting away dirt, grime, moss, algae, and other contaminants.


The high temperature of the steam not only ensures thorough cleaning but also helps to kill and remove bacteria and organic growth. DOFF cleaning is a versatile and environmentally friendly cleaning solution that can be used on surfaces such as brick, stone, render, concrete, and more, restoring their original appearance and leaving them looking fresh and revitalized.


When it comes to masonry and brick cleaning, enlisting the services of a professional company like Pressure Kings is often the best solution.


Our team possesses the expertise, specialized tools, and effective methods required to efficiently tackle the task and achieve flawless outcomes.


Among the array of available techniques, the DOFF cleaning system stands out as one of the finest methods we employ for exceptional results.

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  • Kill Bacteria and Organic Growth: The high temperature of the steam not only cleans the surface but also helps to kill bacteria, mold, mildew, and other organic growth. This provides an added level of sanitation and reduces the chances of regrowth.


  • Versatile Applications: DOFF cleaning can be used on various surfaces, including brick, stone, concrete, render, timber, and more. It is suitable for both interior and exterior cleaning, making it a versatile solution for different areas of your property.


  • Long-Lasting Results: Due to its thorough cleaning capabilities, DOFF cleaning provides long-lasting results. By removing deep-rooted stains and contaminants, the cleaned surfaces stay fresher for an extended period, maintaining their appearance and reducing the frequency of future cleaning needs.


  • Preservation of Historic and Delicate Surfaces: DOFF cleaning is especially beneficial for the preservation of historic buildings or delicate surfaces. It effectively removes dirt and contaminants without causing damage, allowing the original beauty and integrity of the surface to shine through.


The benefits of DOFF cleaning.

DOFF cleaning offers several benefits that make it an ideal choice for various cleaning needs:

  • Gentle and Non-Abrasive: The superheated steam used in DOFF cleaning is a gentle and non-abrasive method, ensuring that the underlying surface is not damaged during the cleaning process. It is particularly effective for delicate or sensitive surfaces, such as historic buildings or intricate stonework.


  • Effective Stain and Contaminant Removal: The high temperature of the superheated water effectively breaks down and removes stubborn stains, dirt, moss, algae, carbon buildup, and other contaminants from surfaces. It can penetrate deep into the pores of materials, ensuring a thorough and comprehensive cleaning.


  • Eco-Friendly: DOFF cleaning is an environmentally friendly option as it uses only water and heat without the need for harsh chemicals or detergents. This makes it a safe and sustainable choice for both the cleaning professionals and the environment.
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What DOFF cleaning can tackle.

  • Organic Growth

    External surfaces can be freed from the presence of algae, moss, lichen, mold, and fungi, along with the unsightly stains they leave behind. By utilizing superheated water, we not only eliminate these growths but also eradicate spores and bacteria, eliminating the necessity for potentially harmful chemicals. This approach ensures that the organic growth remains at bay for an extended period, promoting a cleaner and healthier environment.

  • Biological Matter

    The presence of bird fouling or vermin fouling is not only unpleasant but also poses health risks. Additionally, it can cause unsightly stains on bricks and stone surfaces, requiring dedicated treatment. Fortunately, the DOFF cleaning process offers an ideal solution for this issue. With its ability to effectively remove bird and vermin fouling and sterilize the surface, the DOFF cleaning process ensures a thorough and complete solution.

  • Graffiti Removal

    Regrettably, no one is exempt from the prevalence of mindless vandalism in the form of graffiti. However, there is a silver lining: the DOFF cleaning system excels at effectively addressing graffiti damage. Drawing from our extensive experience, the skilled team at Pressure Kings has a knack for making graffiti disappear entirely with their expertise. After we're done you'll be hard-pressed to discern any trace of the graffiti ever having marred the surface.

  • Atmospheric Pollution

    Airborne pollution can cause significant inconvenience and frustration. Exhaust fumes, as well as historical chimney smoke, often result in unsightly black sooty stains on external surfaces, obscuring the natural color of the original stone or brick. While built-up areas tend to experience this issue more prominently, no location is entirely immune.


    Fortunately, the DOFF cleaning method effectively eliminates this stubborn residue, unveiling the inherent beauty of the original building material. By cutting through the accumulated muck, we restore the surfaces to their former glory, allowing the true character of the structure to shine through.

  • Paint Removal

    Applying paint to the exterior of a brick house can be a viable option when the right paint is chosen for the specific brick type and proper maintenance is upheld. However, the presence of flaking paint can pose a problem as it allows moisture to accumulate between the paint and the wall surface, resulting in dampness and potential deterioration of the bricks, such as spalling and crumbling.


    Leaving bricks unpainted is often advisable for various reasons, and at Pressure Kings, we specialize in restoring brick walls to their natural state by efficiently and effectively removing old paint using the DOFF steam cleaning process. With this method, we can strip off paint layers easily and safely. Additionally, the DOFF steam cleaning process is effective in removing various other coatings, including wax, oil, tar, and bitumen.

  • Chewing Gum Removal

    It may come as a surprise, but the issue of chewing gum is more significant than one might imagine. Across the UK, local councils spend a substantial amount, at least £60 million annually, on the removal of chewing gum from footpaths. Chewing gum poses risks to wildlife and leaves stubborn stains on stone and brick surfaces.


    Fortunately, our highly efficient DOFF steam cleaning process provides a solution. This method effectively removes unsightly stains and ensures the surface becomes free of bacteria. With our expertise and the power of steam, we can restore the cleanliness and pristine appearance of affected areas, eliminating the negative impact of chewing gum on both the environment and surfaces.

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