The purpose of this diploma thesis is to show out the critical places in wooden constructions and their different ways of dealing with the view of 2D and 3D in temperature fields. The thesis is divided into 12 chapters. Firstly, it´s written about the general theory of heat dissipation, the definition of thermal bridges and material properties that influence the formation of temperature fields. In the next part the basic divisions of woodworks, modeling software are described. In the end of this thesis we are learning more about modeling process and the evaluation of the modulated details.