The subject of our diploma theses is the theoretical analysis and the experimental verification of the proposition of thermic and technical properties of standardly manufactured frames of the wood-aluminium windows, such as U-value, course of temperatures and condensation of water vapour. The problem of condensation of water vapour with the emphasis on glazing and the risk of creation of mould is described in the theses. The experimental verification is focused on assessment of surface temperatures from the interior side and their confrontation with the theoretical analysis. The final part of the theses is devoted to different options for improving of thermic and technical properties and durability of the frame.