Abstract
The retrofitting of a building requires an appreciation for the technical, economic and social aspects of the issue. Choosing the optimal solution depends on a large variety of criteria, the most important being the total cost, the construction time length (eventually with the possibility of continuous usage of the building), the ease of technologies application etc. The first part of this paper briefly presents classic and modern retrofitting technologies for industrial buildings. The second part represents a study case of a single storey industrial building retrofitting, using four different intervention options.