I will buy roofing felt RKK-350

We will buy Ruberoid RKK-350, which is a canvas based on cardboard impregnated with a bitumen mixture. The upper side of the product is covered with granulated sprinkling, and the lower side is covered with talc. The main function of Ruberoid RKK 350 is the construction and reconstruction of roofing materials that have served for at least 5 years. In addition, the material allows for waterproofing basements and foundations.