Hello!
In the course of work on the preservation of the cultural heritage site on the street. Opolchenskaya, 1, the roof was repaired. Historically, the roof material is slate. To extend its service life, the new slate coating was treated with Bronya water repellent on both sides. In such cases, painted slate sheets were used, but in view of the high cost of such material, such a solution was often refused. In this case, the water repellent Bronya solved this problem while remaining within a limited budget.