When it comes to caring for historic buildings, cleaning the fabric of the structure must be approached with care, precision, and respect for the original materials. At AGA Heritage Conservation, we use the DOFF steam cleaning system to achieve exceptional results without causing harm to delicate stone, brick, or masonry surfaces.

What is DOFF Cleaning?

The DOFF system is a specialist cleaning method that uses superheated steam at low pressure. Unlike abrasive techniques such as sandblasting, DOFF cleaning gently removes dirt, moss, algae, lichen, fungi, and even paint residues without damaging the underlying surface. The low-pressure steam ensures that fragile historic materials are not eroded, scarred, or weakened.

Why Use DOFF for Heritage Buildings?

Historic façades and masonry often suffer from years of pollution build-up, biological growth, or previous unsuitable repairs. Cleaning these surfaces with harsh methods can strip away the very detail and patina that makes them historically significant. DOFF cleaning offers a safe and effective alternative.

  • Gentle on materials – Suitable for stone, brick, and terracotta

  • Highly effective – Removes biological growth and pollutants

  • Environmentally responsible – Uses only water, no harsh chemicals

  • Trusted for conservation – Approved by heritage bodies across the UK

Protecting Beauty and Integrity

At AGA, we believe that conservation is not only about preservation but also about presentation. A carefully cleaned façade reveals the craftsmanship, detail, and texture of the original design while ensuring the building can continue to breathe and function as intended.

By choosing DOFF cleaning, we protect both the appearance and the long-term resilience of heritage buildings, ensuring they continue to be appreciated for generations to come.

Talk to Us About DOFF Cleaning

If your building requires sensitive cleaning, AGA Heritage Conservation are here to help. With experience across historic homes, churches, civic landmarks, and educational buildings, we combine conservation expertise with specialist tools to deliver the very best results.

To learn more about our work or to discuss your own restoration project, contact us at info@agaconservation.co.uk