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.)
Density
Hardness (value expressed in Mohs)