Problem
restauro-pulituraThe removal of dirt, deposits, patinas and encrustations, consisting of materials unrelated to the stone surface or of the artefact of historical and artistic interest, or products of the original material that are irreversible and harmful for their conservation, may be carried out using mechanical/physical or chemical methods.
The cleaning process must be:
– well controllable in every phase, gradable and selective
– must not produce materials that are harmful for stone conservation (eg: soluble salts)
– it must not produce modifications, such as micro-fractures or strong abrasions on the clean surface, which can accelerate the deterioration due to increased porosity
Solution
restauro-pulitura2CIR offers, for the cleaning of stone surfaces or artefacts of historical and artistic interest, a range of cleaners, with controlled pH, able to guarantee the respect of the material, the operator and the outdoor environment, thanks to the biodegradable surfactants contained in them.

Given the neutral pH of the cleaners, these can also be used with long contact times with the compressing technique, or thickened in the gel phase, working gradually and more controllable.

The cleaners of the restoration range are:

  • Effective
  • Compatible with stone materials or artefacts of historical and artistic interest
  • Low environmental impact

INTERVENTION CYCLE

  • In the presence of microorganisms, apply the specific BIO Cor BIO T PLUS
  • Wait not less than 24 hours and proceed with the removal of biodeteriogens
  • Wet the surfaces with clean water
  • Application of the specific “RP” cleaner making it foam
  • Leave the product to act for the pre-set time
  • Rinse with plenty of water
  • Subsequently proceed with the phases of the conservative intervention
CIR SOLUTION ADVANTAGES
The solution proposed by CIR allows to act on the materials, in a gradual and selective way, without altering the natural aging patina.

The neutral pH of cleaners allows to intervene on all types of natural stone, both in calcareous matrix and silicate, as well as on the manufactured articles, so that these do not interact with the materials that make up the surfaces.

THE TECHNICIAN RECOMMENDS
In case of dirt, smog or salt, thick and hard encrustations, it is advisable to drybrush the surface affected by the cleaning with a broom brush, in order to damage the superficial layer of dirt that limits the penetration of cleaners inside them.

Contact us for advice or free inspection: ufficiotecnico@circhimica.it