Different buildings respond in various ways to different kinds of cleaning – and they age differently, too. This is often due to the physical properties of their structure and facade and the age of the building. With so many of our older buildings in the UK being made of stone, for instance, the accumulation of fungi, algae and moss makes for serious deterioration and visual decay over time.

The removal of biological matter and the accumulation of things like moss, dirt and more is challenging; a cleaning process that’s too abrasive or of too high a pressure will chip away at stone and can even damage the facade and any paint or protective surface substances applied to it.

The DOFF Steam Cleaning system generates superheated steam at temperatures exceeding 150°C, but this isn’t your average kettle-whistle heat. The pressure remains surprisingly low, creating a delicate balance between heat and touch. This makes the DOFF system ideal for tackling stubborn grime on surfaces that wouldn’t tolerate harsher methods, like:

• Historic buildings: DOFF Steam Cleaning gently cleans stonework, brick, and terracotta without risk of damage, preserving heritage sites for future generations.
• Graffiti removal on stone: Say goodbye to unsightly tags without harsh chemicals. DOFF lifts paint and ink without harming the underlying surface.
• Industrial cleaning: From modern stone facades to historic monuments, DOFF cuts through detritus and grime without leaving chemical residues.