FIELD: manufacture of building materials.
SUBSTANCE: object of invention is to protect various building structures preferably using proposed roofing and waterproofing material. Manufacture of the latter comprises preparation of a composition obtained by mixing petroleum bitumen melt at 120-180°C, plasticizer, and ground rubber extender. The latter is rubber crumb measured out into petroleum bitumens/plasticizer mix preliminarily prepared in specially designed electrical bitumen mixing machine. All ingredients are further mixed until homogenous mastic mass is obtained, which is suitable for use in subsequent creation of five-layer coating without additional heating at following order of operations: lubricating cover of metallic expandable table with soap emulsion, laying first lowest layer of mastic, second layer of fabric substrate, third middle layer of mastic, fourth layer of fine sand, after which total assembly is cooled and cut in the middle into two equal portions, and laying fifth layer of water emulsion paint followed by forming roll and coiling it on bobbins using polyethylene film as temporary separator. Two mastic layers have following composition: 10.0-14.0% rubber crumb, 0.0-7.0% plasticizer, and the rest petroleum bitumen melt.
EFFECT: reduced cost of product due to use of waste raw material.
5 ex
