We were the main specialist exterior cleaning contractor for cleaning of St. Marys, Tramadog Gwynedd a coade stone lynch gate.
For this project we used Stonehealths TORC system.
We are now using Restorative techniques “Vortech” which we find a massive improvement on the Stonehealth system.
The TORC/Vortech system creates a gentle swirling vortex using a mixture of low air pressure, little water and a safe inert fine granulate.
There are variations in the type of abrasives used depending on the type of substrate being cleaned.
The key characteristics include:
Particle size (maximum size and size distribution)
Shape (rounded, angular etc.)
Hardness (value expressed in Mohs)