Chemical Free Cleaning Video with Jos Rotosoft from Lets Clean

The JOS light abrasive, micro-cleaning equipment, a chemical-free system used for the cleaning of facades, removal of graffiti, brick cleaning without damage to joints or the surface being cleaned. Will remove matter off metal, concrete, brick, timber, marble, terracotta and limestone.

Typical micro abrasives that can be used with "Jos" are:
crushed glass, calcium carbonate, soda (sodium bicarbonate), nutshell and many other blasting media.