Doff & Torc Stone Cleaning

Doff is a gentle form of steam cleaning, often used to clean stone and effective at removing paint, staining and discolouration. Torc cleaning is an even gentler cleaning process – it creates a swirling vortex using a mixture of low air pressure, water and an inert granulate.

Both products are supplied by Stonehealth Ltd – a UK based company concerned with the supply of products and consultancy work in relation to sensitive stonework restoration and conservation. In 2022, Covanburn became an approved contractor for both the Doff and Torc cleaning systems.

The systems are hugely effective at restoring sensitive stone structures and facades with 0% surface damage, and help to complement our ongoing masonry and heritage conservation work.