1. A synergistic antimicrobial composition containing (a) 3-iodine-2-propynylbutylcarbamate and (b) flumetsulam, in which the mass ratio of 3-iodine-2-propynylbutylcarbamate and flumetsulam is from 10: 1 to 1: 10.2. The composition according to claim 1, in which the mass ratio is from 6: 1 to 1: 2.3. The composition according to claim 2, which is a building material, paint, coating, polymer, plastic, synthetic or natural rubber, a paper product, a fiberglass sheet, insulation material, a system for exterior insulation, roll roofing material and flooring material, mortar, wood material or wood-plastic composite material. 4. The composition according to claim 3, which is a dry film coating. A synergistic antimicrobial composition containing (a) 3-iodine-2-propynylbutylcarbamate and (b) diclosulam, in which the mass ratio of 3-iodine-2-propynylbutylcarbamate and diclosulam is from 15: 1 to 1: 15.6. The composition according to claim 5, in which the mass ratio is from 12: 1 to 2: 1.7. The composition according to claim 6, which is a building material, paint, coating, polymer, plastic, synthetic or natural rubber, a paper product, a fiberglass sheet, insulation material, a system for external insulating decoration, roll roofing material and flooring material, mortar, wood material or wood-plastic composite material. 8. The composition according to claim 7, which is a dry film coating.1. Синергетическая противомикробная композиция, содержащая (а) 3-йод-2-пропинилбутилкарбамат и (б) флуметсулам, в которой массовое соотношение 3-йод-2-пропинилбутилкарбамата и флуметсулама составляет от 10:1 до 1:10.2. Композиция по п.1, в которой массовое соотношение составляет от 6:1 до 1:2.3. Композиция по п.2, представляющая собой строительный материал, краску, покрытие, полимер, пластмассу, синтетический или натуральный каучук, продукт из бумаги, лист из стекловолокна, изоляционный материал, систему для наружной изолирующей отделки, рулонный кровельный материал и материал для настилки п
