Sandblasting consists of a cleaning system that makes it possible to bring the surface of the old recovered wood to “new”, acting in a controlled manner so as not to damage it.
Using this procedure, the boards recovered from floors, claddings, old wooden beams are cleaned of any layers of paint and / or dust which, over time, have solidified on the surface.
The treatment consists in the emission, through a tube, of large quantities of sand (of different grain sizes, depending on the type of surface on which it is operated), which with very strong jets reach the wood to be treated; the process is carried out by means of a compressor that generates air and a sandblaster, that is a sand-air mixer.
An alternative, more recent and widely used method to carry out this operation involves the use, instead of sand, of solidified nitrogen and “shot” on the surface, in order to give the effect of the brushed.
In the images accompanying this text we show you the effect of the sandblasting operation, giving you some examples of floors with antique wooden beams, before and after the intervention.
A curiosity: if you work on small surfaces, sandblasting can also be performed using egg shells or the cob (central part of the cobs). These are ecological methods, which do not involve risks of pollution for the environment or dangers to the health of the people who perform them.