Preserve your building’s legacy
DOFF Cleaning – Gentle, Effective, Heritage-Safe
At AGA Heritage Conservation, we specialise in the careful cleaning of historic and delicate surfaces. One of our most trusted tools is the DOFF cleaning system – a high-temperature, low-pressure steam cleaning method designed to remove dirt, biological growth, and pollutants without damaging the underlying material.
What is DOFF Cleaning?
The DOFF system uses superheated water at temperatures up to 150°C, delivered at low pressure. This combination allows us to remove unwanted surface contaminants while preserving the integrity of stone, brick, concrete, wood, and other historic materials. Unlike abrasive methods, DOFF cleaning avoids physical erosion, making it ideal for listed buildings and conservation projects.
Why Choose DOFF?
Gentle on historic fabric – no harsh chemicals or blasting
Highly effective – removes moss, algae, lichen, fungi, paint residues, and atmospheric soiling
Environmentally conscious – uses only water, with minimal runoff and no harmful residues
Approved by conservation bodies – trusted by English Heritage and similar organisations
Our Conservation Approach
We understand that every historic surface tells a story. Before cleaning, we carry out a full assessment to determine the most appropriate method and temperature setting. Our trained operatives ensure each project is completed with precision, respect, and full compliance with heritage conservation best practices.
Preserve, don’t damage.
If you’d like to learn more about how DOFF cleaning can revive your historic building without harming its character, contact AGA Heritage Conservation today.