Dry surface cleaning using brushes and vacuum cleaners. Biocolonization removal and degreasing. Surface remediation of non-restorable, disintegrated material. Micro-sealing of fissures with lime grout. Raking out and replacement of unstable or inadequate joints. Compaction of leaded metal elements. Cleaning, inhibition, and protection of metal elements. Water repellent treatment of stone surfaces. Manage services. Manage suppliers