Plastering strip (2, 26, 68, 92) of plastics material with attached thereto a net-like reinforcing material section (18, 64, 92, 114), in particular made of glass grating, glass silk or plastic fabric or of glass grating, glass silk or plastics scrim, for being embedded in or under a plaster layer, in particular a plaster layer on a thermal insulation of a building wall, wherein the reinforcing material section (18, 64, 92, 114) has a finish or coating, characterized in that the finish or coating is free of flame retardants and has a not easily flammable or non-flammable material that falls at least into fire protection class B2 "normal flammability" according to DIN standard 4102-1, in particular into fire protection class B2 "normal flammability" according to DIN standard 4102-1 or into fire protection class B1 "not easily flammable" according to DIN standard 4102-1 or into fire protection class A2 "not flammable" according to DIN standard 4102-1; that the finish or coating of not easily flammable or non-flammable material comprises at least one material selected from the following group: latex, an acrylate (pure acrylate), PVDC (polyvinylidene chloride), PTFE (polytetrafluoroethylene, trade name Teflon), PFEP (perfluoro (ethylene propylene), PCTFE (polychlorotrifluoroethylene), PVC (polyvinyl chloride), polycarbonate(s), polyether ether ketone(s) (PEEK), polyvinyl acetate (PVAC), polyphenylsulfone(s) (PPSU), polyethersulfone(s), polyvinylidene fluoride (PVDF), perfluoroalkoxy copolymers, chlorobutadiene rubber, ethylene-propylene-diene rubbers (EPDM), polyetherimide(s), and phenolic resins; that the reinforcing material section (18, 64, 92, 114) together with the finish or coating has a mass per unit area of 100 - 300 g/m 2, in particular of 150 - 200 g/m 2; and that the weight of the finish or coating accounts for 5 - 50% of the total weight of the reinforcing material section (18, 64, 92, 114) plus the finish or coating. wherein the reinforcing material section (18, 64, 92, 114) has a finish or coating, characterized in that the finish or coating is free of flame retardants and has a not easily flammable or non-flammable material that falls at least into fire protection class B2 "normal flammability" according to DIN standard 4102-1, in particular into fire protection class B2 "normal flammability" according to DIN standard 4102-1 or into fire protection class B1 "not easily flammable" according to DIN standard 4102-1 or into fire protection class A2 "not flammable" according to DIN standard 4102-1; that the finish or coating of not easily flammable or non-flammable material comprises at least one material selected from the following group: latex, an acrylate (pure acrylate), PVDC (polyvinylidene chloride), PTFE (polytetrafluoroethylene, trade name Teflon), PFEP (perfluoro (ethylene propylene), PCTFE (polychlorotrifluoroethylene), PVC (polyvinyl chloride), polycarbonate(s), polyether ether ketone(s) (PEEK), polyvinyl acetate (PVAC), polyphenylsulfone(s) (PPSU), polyethersulfone(s), polyvinylidene fluoride (PVDF), perfluoroalkoxy copolymers, chlorobutadiene rubber, ethylene-propylene-diene rubbers (EPDM), polyetherimide(s), and phenolic resins; that the reinforcing material section (18, 64, 92, 114) together with the finish or coating has a mass per unit area of 100 - 300 g/m 2, in particular of 150 - 200 g/m 2; and that the weight of the finish or coating accounts for 5 - 50% of the total weight of the reinforcing material section (18, 64, 92, 114) plus the finish or coating. latex, an acrylate (pure acrylate), PVDC (polyvinylidene chloride), PTFE (polytetrafluoroethylene, trade name Teflon), PFEP (perfluoro (ethylene propylene), PCTFE (polychlorotrifluoroethylene), PVC (polyvinyl chloride), polycarbonate(s), polyether ether ketone(s) (PEEK), polyvinyl acetate (PVAC), polyphenylsulfone(s) (PPSU), polyethersulfone(s), polyvinylidene fluoride (PVDF), perfluoroalkoxy copolymers, chlorobutadiene rubber, ethylene-propylene-diene rubbers (EPDM), polyetherimide(s), and phenolic resins; that the reinforcing material section (18, 64, 92, 114) together with the finish or coating has a mass per unit area of 100 - 300 g/m 2, in particular of 150 - 200 g/m 2; and that the weight of the finish or coating accounts for 5 - 50% of the total weight of the reinforcing material section (18, 64, 92, 114) plus the finish or coating.