The DOFF system is a steam based stone cleaning system, supplied by Stonehealth. We use the DOFF system to clean stonework and masonry using high temperature steam, very gentle pressure on the surface, which requires a low volume of the water. The surface is therefore not saturated and will be dry within minutes.
Preserving History the right way!
It’s unlike any other steam system and can achieve temperatures 150°C at the nozzle end. We vary the temperature and pressure to remove either many types of paint or biological matter. The steam removes moss, algae, fungi and other biological matter and will also kill off spores. This means there is then no need to use a chemical biocide during the removal process or as a protection against further biological activity.