Pinnacles, columns and cornices

Certosa of Pavia

Columns, pinnacles and cornices needed restoration for their bad weather degradation. Common practice for this type of material includes preliminary application of biocidal agent on all stone surfaces; disinfecting from microorganisms, microflora and animal faeces. A suitable wide-range biocidal product was painted and sprayed several times and biological deterioration agents were removed mechanically and with demineralized water.