The main function of the roof is to protect the building from the effects of external factors. Roof maintenance and repair is necessary not only to preserve the attractive appearance of the building, but also for the safety of occupants and property. Repair or replacement of a damaged roof is mandatory on a regular basis, especially if there are roof leaks. Roof repair is also performed when we want to update the appearance of the roof with the most popular roofing material or replace the roof covering.