Cleaning
Using a variety of techniques such as electronically
controlled intermittent nebula sprays, chemical poulticing, air abrasive, hand
scrubbing
and JOS vortex system on both external and internal stonework.
Particular attention is always paid to using the gentlest cleaning methods
and
not over cleaning.
Examples: Bath Abbey - Bath, Arundel Cathedral - Arundel, St. Paul's Cathedral - London