Repair kit is purposed for filling cavities during laminating, perforating of metal surfaces and reinforcing of places subjected to corrosion. Thanks to perfect adhesion to the basecoat the repair kit may be used for car body repairs as well as pipes, metal or laminated swimming accessories and camping equipment. The obtained structure features with exceptionally high resistance to mechanical stress and vibrations. The layer applied in terms of repair is additionally resistant to high temperature, oils, greases and naphtha. The kit is involves polyester resin along with the hardener and glass fibre mat of 0.36m2 area.