This standard applies to opaque enclosing structures that separate the premises of a building from the external environment or separating rooms with different temperature and humidity conditions, with the exception of translucent enclosing structures. This standard covers two types of fencing. The first type of fencing relates to the building shell and interacts with the external environment of the climatic region of construction (external walls, coverings, attic floors, basements and over entrances, in contact with the external soil). The second type of fencing includes internal walls and ceilings that separate rooms with different temperature and humidity operating conditions.
GOST R 59939-2021 history
2022GOST R 59939-2021 Buildings and structures. Method for determining the resistance to heat transfer in field conditions