The article analyzes the heat-shielding properties of typical curtain-type ventilated façade (hereinafter referred to as CVF) systems used on multi-storey residential buildings in Moscow. We conducted analytical and visual studies, evaluated the technical condition by external features, including photographing the detected defects, thermographic scanning of facades, and took selective measurements of external geometric parameters, distortions, and structural properties for 18 objects in the city of Moscow. The level of defects in the thermal insulation layer at Moscow facilities was at least 50%. A gap of 10 mm at the joint of insulation slabs reduces the heat-shielding properties of the CVF fragment of the outer wall by 14.5–15%. The conclusions were drawn on the basis of the results of calculations of the reduced heat transfer resistance of a total of 18 CVF options from two manufacturers of the Kaptekhnostroy (aluminum CVFS subsystem) and Alfa-Prof (galvanized CVF subsystem) systems. When comparing these solutions, it is obvious that they are all inferior in value reduced resistance to heat transfer of the composite facade thermal insulation system. If the foundation is made of monolithic reinforced concrete or brickwork, the choice of finishing material does not matter. Moreover, the indicators of the reduced heat transfer resistance do not differ significantly. In the case of a base made of expanded clay concrete blocks, the galvanized steel subsystem is 2.9% (ceramic granite), 4.3% (fiber cement) and 4.6% (composite) more efficient.

Keywords: curtain-type facade system, ventilated, facing slabs, fasteners, defects, inspection, heat transfer resistance

The article analyzes the survey results of standard curtain walls with air space (hereinafter – CWs), used in construction industry in the city of Moscow. Despite a large number of advantages, curtain wall ventilated systems have a number of disadvantages, resulting, on the one hand, from the design solution of the CW: heterogeneity, shrinkage and deformation of the insulation layers, water penetration through the lining cracks, etc. On the other hand, failure to meet the CW technology and insufficient development of regulatory support for the design, installation and maintenance of CWs lead to a decrease in their quality. For a number of survey objects, a discrepancy between design and technical solutions was revealed: for the material of the supporting structures; for the material of the brackets; for the material of self-tapping screws; for the material of facing plates. Based on the survey results, it was revealed that it is inappropriate to use facing elements made of fiber cement boards in order to prevent their collapse and ensure the safety of people near the wall systems. Also, it is not advisable to use ""TYVEK House Wrap"" (1060) wind and hydroprotective membranes for installation from the outer surface of the thermal insulation of buildings due to their fire hazard.

Keywords: hinged facade systems, ventilated, facing plates, fasteners, defects, testing, displacement, cracks, chipping, deformation