Review article

The brick industry began to develop rapidly in the middle of the XIX century, which coincided with the construction of most of the buildings in the city center. Therefore, brick is a popular building material that has found wide application in the development of the historical center of Saint Petersburg. The results of full-scale tests of bricks taken from the outer wall of a historic building show that the bricks have retained their building properties. But single-layer brick walls do not meet the new requirements for energy saving, and, in this regard, options for using an insulant material in the structure of outer walls are offered, and ways of increasing the energy efficiency of historical development buildings are considered.