The ProElast system for external sealing of seams and joints at construction sites consists of a high-quality EPDM membrane ProElast 1.0=200mm and a universal one-component adhesive-sealant InnoElast. The materials of this system are highly resistant to UV radiation. It is used for waterproofing working, directional and deformation joints in monolithic and prefabricated structures with increased requirements for water resistance.The ProElast theme is for external sealing of seams and joints in construction objects, it consists of a high-quality EPDM membrane and a universal one-component adhesive-sealant InnoElast. The materials of this system are highly resistant to UV radiation. It is used for waterproofing working, directional and deformation joints in monolithic and precast reinforced concrete structures with increased requirements for water resistance. Also, the ProElast system can be used to seal joints, cracks and ruptures of roof structures, shafts and tanks. The ProElast system can withstand a maximum water pressure of 2 bars (which corresponds to 20 m of water column). It is possible to work with InnoElast adhesive-sealant at the temperature of the building element -3 C. InnoElast can be used for the rehabilitation of deformation joints and road surface joints. Mechanical fasteners, such as clamping tires, dowels or flanges are not required for fixing the system. Thus, the system can be used for the arrangement of joints in the abutments of buildings. The advantages of this product are: quick and easy application; possibility of use at temperatures from -3 °C; possibility of laying on a wet surface; the material does not slip from vertical surfaces; application, as a rule, without a primer, good adhesion to concrete, steel, glass, bitumen and various polymer materials; resistance to water under pressure up to 2 bar; high chemical and microbiological resistance; absence of solvents in the product; resistance to weather factors and UV radiation; good compatibility with other bitumen insulation materials; the widest application also in the rehabilitation of objects.