This project included the restoration and preservation of the facade of the Fiat Auto SpA Office Building – lots No. 4-5-6-7-8-9.
The recuperation project included the consolidation of the Finale stone coverings, followed by aero-sanding treatment of stone, spines, gussets and anchoring of all the stone panels.
TECHNICAL DESCRIPTION OF THE PROJECT
Restoration and preservation of a facade of approximately 8.000 m2.
Our intervention started with a preliminary high-temperature and high-pressure washing to remove all the surface dirt, following which we performed a deep-cleaning treatment of the Finale stone covering, through special machinery, where air, inert elements, and water were separately regulated, partly by the operator, and partly from a command in the work area. Operators, connected via radio, were able to dose the perfect blend to obtain maximum results, without damaging the sandstone sheeting.
15.345 gusset sealing of the stone covering using metal gussets, followed by dust vacuuming and insertion of A4 AISI 316 stainless steel threaded rods, hidden spines inserted by injecting an expansive, super-fluid, aggregate-free pre-blended cement paste. Protective sealing of gussets with cocciopesto plaster, white hydraulic lime obtained by calcination at > 1200 C° temperature of white silica limestone, and Sinopia resin swabbing.
175 inlays performed on partially deteriorated stone panels. Perpendicular slicing of the damaged portion using diamond-tip disks. Preparation of the back surface with low-elastic modulus, anti-shrinkage grout. Realization of spines with stainless steel bars, bicomponent, silica-enriched epoxy resins. Body-filling with pigmented cocciopesto plaster. Micro-sanding to reproduce the inlay finish of the original stone.
422 consolidation interventions on damaged stone panels. Boring of holes along the fissure on the stone panel with 3 mm. diamond-tip drill. Removal of build-up dust from inside the hole through air pressure. Blending of A and B components of Sinopia bicomponent resin through measuring dispensers. Injection of resin through long-needle syringes, avoiding any spill over. Micro-sanding along the cut line. At completion, a protective and consolidating impregnating agent was applied by spray gun and brush, until complete absorption.