Icomos híradó különszám (A 37. Egri Nyári Egyetem előadásai 2007 Eger, 2007)

> Have previous graffiti removal processes caused damage? > Is the rapid removal of graffiti a priority? > Can access to the graffiti prone areas be restricted? > Is it possible to improve site security? > Does the policy involve the surrounding community? > Are employees familiar with procedures? National and local policy Edinburgh City Council has come up with a set of policies under the city development planning. Approved since 2

nd October 2003, the handbook is called 'Stonecleaning, Paint Removal and Graffiti Treatment'. The council protocol outlines the necessary steps for the treatment of graffiti. They are: Necessary Background Information > Nature and condition of the substrate. > Chemical composition of the marker. > Extent to which the material has penetrated the surface. Treatment Methods > Chemical. > Physical. > Heat. Trained Operatives > Conducting trials. > Extent of Cleaning. > Recording. > Monitoring. > Vulnerable sites. > Anti-graffiti treatments. > Listed Building Consent. > Chemical composition of marker? > Bond between graffiti and substrate? > Effect of graffiti remover on substrate? > Time and cost involved? > Outcome of test treatments? > Health & safety. Stages of graffiti treatment > Recording. > Identification of graffiti material. > Treatment Type. > Test Cleaning. > Treatment. > Completion. > Monitor. Anti-graffiti coatings As it is not usually possible to prevent graffiti, But one of the most significant problems associated with graffiti removal is that even the least aggressive method will also cause damage to the surface of the material. Under these circumstances, protecting the surface may be application of the barrier coating protecting the surface may be desirable. There was a great need of developing an antigraffiti coating for protecting surfaces. Ideal and - graffiti coating > Permeable to water vapour. > No change to appearance of substrate. > No change in mineralogy of substrate. > Soil in similar manner to untreated surfaces. > Should not degrade during planned life. > Reversible process. > Non-toxic and non-irritating. SELECTION OF GRAFFITI REMOVAL METHOD • Chemical removers (including proprietary systems). o Non-proprietary graffiti removers, o Proprietary graffiti removers. • Water-soluble graffiti removers • Solvent-soluble graffiti remover > Liquids > Gels > Creams • Mechanical removal systems. • Laser cleaning system. Key considerations > Type and condition of surface? > Absorbency of surface? • Extent of area to be treated? A repreienlaÜon of the effects of ff~afíuí aJUofk on &:>n£ Episode of Episode of Graffiti Graffiti Removal Application using chemicals Slam kiide thil h*> ntrrrbwn m low Note: This is ahypotheucal Drawing, not to any scale