Metallic Downspout Replacement with Thermal Insulation

Building energy rehabilitation through the replacement of existing downspouts in facade hollow with metallic downspouts of galvanized steel, 0.8 mm thickness, 300 mm development and 5 folds, and thermal insulation of rigid polystyrene panel, rough surface with lateral machined and straight machined and recto, 40 mm thickness, >= 300 kPa compressive strength, 1.2 m²K/W thermal resistance, 0.034 W/(mK) thermal conductivity.