Restoration and Colour Matching
Although capable of lasting for hundreds of years, sandstone is sadly a very easy material to damage. The elements, city pollution and vandals can all take their toll on its surface
Steam Clean Technologies are able to offer several solutions to damaged sandstone, and to help protect it for decades to come:
- Removal of graffiti. This may take the form of marker pen or paint. The hardest inks to remove as of 2008 are "Grog", "Nero d'Inferno" and "Stealth" all of which seem to be the weapon of choice with today’s vandals. Each is renowned for its hard-to-remove nature and whilst some removal companies go to the most extreme lengths to remove such pigments, we like to out think the vandals. Using a special “poultice” we are able to draw the pigment to the surface and then steam it away using the Doff.
- Scratched-in graffiti and general damage. Steam Clean Technologies offers SCT Colour Match This is a non-cementitious stone repair product, made from fine limestone granules. This product is supplied as a powder and a liquid, pre-coloured to match the surface to be repaired and is completely non-shrink. It can be placed or cast to full thickness in one application, and sets within 20 minutes. SCT Colour Match provides an excellent match for most medium grained limestone and sandstones, as well as brick.
The top photo shows work in progress with the poultice being washed away, whilst the one on the right shows the sandstone filled and protected with transparent anti-graffiti coating. Note apparent holes in the top photo are now filled in the right shot.
