The system uses super high temperature steam (variable temperature) & the pressure to clean paint, dirt, etc off of any external surfaces.

The DOFF system is a recognised & accepted method for cleaning Listed buildings. It is safe to use as no chemicals are needed.

Great for cleaning moss, lichens & other biological build ups & stays as clean as pesticides as the 150C kills all the spores. StoneHealth

One of the latest projects completed by Alberny includes the external stone work cleaning at Sherbourne House, a Grade II listed building, now the new arts center.