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How DOFF Cleaning Works

DOFF cleaning is a specialised and highly effective method for cleaning building exteriors, particularly suited for stonework, brickwork, and other delicate surfaces.

It leverages the power of superheated water to remove dirt, biological growth, and pollutants without causing damage to the substrate. Here’s an in-depth look at how DOFF cleaning works and why it’s preferred for maintaining the integrity and appearance of buildings. Especially when used by our rope access services team.

doff steam cleaning with rope access

The Science Behind DOFF Cleaning

The DOFF cleaning system works by producing high-temperature steam that reaches up to 150°C (302°F). Unlike pressure washing, which relies on high pressure to blast away dirt and contaminants, DOFF cleaning uses low pressure combined with heat. This gentle approach ensures that the surface being cleaned is not damaged during the process, making it ideal for older, more sensitive materials.

Key Components of the DOFF Cleaning System

  1. Water Heating Unit: The heart of the DOFF system is a unit that heats water to extremely high temperatures. This unit ensures a continuous flow of steam at a consistent temperature.
  2. Application Nozzle: The nozzle used for applying the steam is designed to direct the superheated water at low pressure. This allows for precise cleaning without the abrasive impact of traditional high-pressure systems.
  3. Adjustable Controls: Our rope access operators have full control over the temperature and pressure, allowing them to tailor the cleaning process to the specific needs of the surface being treated.

The DOFF Cleaning Process

  1. Initial Inspection: Before any cleaning begins, a thorough inspection of the building’s surface is conducted to determine the type of contaminants present and the condition of the substrate.
  2. Preparation: The area to be cleaned is prepared by removing or protecting any elements that could be affected by the steam.
  3. Application of Superheated Water: The DOFF system directs a steady stream of superheated water onto the surface. The high temperature effectively loosens dirt, moss, algae, lichen and other pollutants, lifting them from the substrate.
  4. Removal of Contaminants: The loosened contaminants are washed away, leaving the surface clean and sanitised.
  5. Final Inspection and Touch-Ups: After the main cleaning is completed, a final inspection ensures that all areas have been thoroughly cleaned. Any missed spots are revisited for touch-ups.

Advantages of DOFF Cleaning

  • Non-Abrasive: Unlike high-pressure washing, DOFF cleaning does not damage the substrate, making it safe for use on delicate surfaces.
  • Effective Against Biological Growth: The high temperature kills spores, preventing the regrowth of moss, algae, and lichen.
  • Graffiti Removal: DOFF cleaning is also highly effective for removing graffiti without leaving behind stains or damaging the underlying material.
  • Environmentally Friendly: The process uses only water and heat, without the need for harsh chemicals.
  • Versatile: Suitable for a wide range of surfaces, including stone, brick, concrete, and even some metals.

Applications of DOFF Cleaning

DOFF cleaning is ideal for:

  • Heritage and Listed Buildings: Preserving the aesthetic and structural integrity of older buildings.
  • Commercial Properties: Maintaining a clean, welcoming appearance for clients and customers.
  • Public Buildings: Ensuring that spaces such as schools, libraries, and government buildings are well-maintained.
  • Residential Complexes: Enhancing the appearance and longevity of multi-story residential properties.

Safety and Expertise

Using a DOFF cleaning system requires training and expertise. Our rope access team understand how to handle the equipment and assess the surface condition to ensure safe and effective cleaning. At Abseiling Services, our experienced professionals are well-versed in DOFF cleaning techniques, ensuring a thorough and careful approach for each project.

DOFF cleaning is a powerful, non-invasive cleaning method that maintains the integrity of building exteriors while effectively removing dirt, biological growth, and graffiti. Its use of superheated water at low pressure provides an environmentally friendly solution that preserves delicate surfaces, making it the ideal choice for properties across Scotland. For businesses and property owners looking for an efficient and safe way to clean stone and brickwork, DOFF cleaning offers unmatched results. If you would like to know more about DOFF Cleaning and the benefits of rope access services coupled with DOFF Cleaning, please contact us today.

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