| Summary: | The thesis work studied the main principle of an inverted (turned) flat roof, review and analyzation the existing types of inverted roof, the collection of information on the use in the Northern countries, in Finland and in Russia. The background of the study was that technology of the investigated roof requires more advanced engineering solutions and improvement for the climatic conditions of St. Petersburg, Finland and the Northern countries in general. The aim was to make an analyzation of existing solutions of inverted flat roof construction and to make a possible improvement of inverted flat roof for unfavorable climatic conditions. New model of roof supports made of aluminium and stainless steel was developed for inverted roofs on supports. Found multifunctional insulation materials for inverted roofs are a good replacement for traditional insulation materials, as proven by thermal calculation. It is possible to conclude that the construction and use of the inverted flat roofs also possible in such countries with a harsh climate. Methods of system analysis, expert analysis and mathematical modelling, patent search, 3D-modelling, thermal calculation and analysis were used in the thesis work.
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