Sandstone can be sandblasted gently

Not only the names of the object and the abrasive match well. Sandblasting is a suitable way to clean sandstone thoroughly and gently. The low or high pressure sand has a slightly abrasive effect, which does not harm the sandstone physically.

Every job is achieved

The versatility of sandblasting makes the type of cleaning universally applicable. Due to the sand striking the sandstone at high speed, a light sanding effect is achieved. It is sufficient to remove soiling without causing any significant removal of the rock itself.

Sandblasting has the great advantage of completely reaching uneven surfaces and shapes in cracks, grooves, edges, corners, curves and other specific workpiece shapes at any point. Especially with frescoes, sculptures and statues, a complete cleaning of the sandstone can be done in one operation.

Adjust pressure regulation

Often comes in the context of the rehabilitation of sandstone in and on old buildings, the need to remove, old plaster and other coarse dirt to eliminate. The abrasive effect of sandblasting is ideal as the blast eliminates any foreign matter without attacking or damaging the sandstone surface.

With different pressure settings can also be addressed individually and specifically on the existing sandstone and the degree of their pollution. In the so-called low-pressure process, particularly gentle processing is possible.

Elaborate and dusty process

The disadvantage of sandblasting is the large amount of dust generated by the sand itself and by the debris that dissolves. This effect can be counteracted by a slurring process. When slamming, water saturated with sand is applied to the sandstone.

Because of the enormous amount of dust in Germany it is not allowed to shine with quartz sand. This creates the very harmful silicosis, colloquially known as black lung. For this reason, and because of other specific physical properties, sand as a blasting agent today is often replaced by other materials.

Typical sand substitutes are corundum, glass and plastic granules, blast furnace slag and steel. The special nature of the different materials ensures a better spray pattern, especially for artistically demanding sandstone objects.

Tips & Tricks

If you want to sandblast your own sandstone, you have to expect an elaborate "construction site". Apart from the development of dust, the blowers are very loud and the mixing or filling of the jet sand is physically exhausting.

Video Board: Gentle Sandblasting with Ameriblasts