SPRAYING :
After ensuring that the stone facade and/or mouldings have been thoroughly cleaned using a non-aggressive chemical-free process (i.e. sand-blasting, scrubbing), a solution containing calcifying bacteria is sprayed at low pressure onto the surface to be treated.

NUTRIENT :
During the following four days, the bacterial culture is fed with a liquid nutrient which encourages the development of the micro-organisms and enables them to generate and deposit carbonate on the surface of the stone.

BIOMINERALISATION :
Like a skin, the biocalcite produced by the micro-organisms forms a protective crystalline structure which is identical to that of the original stone and which matures in total harmony with the support.

RECALCIFICATION :
The process uses the natural capacity of certain non-pathogenic bacteria to produce limestone. The rapid formation of this natural calcin by a reversible and compatible process hardens the stone and provides long-term protection without altering the appearance, texture or colour of the original material.