The main requirement for materials that are used for external finishing of balconies is resistance to aggressive environmental factors. Frost -resistant external plastic lining and vinyl siding are best suited for finishing work. The lining is durable and resistant to sunlight. In addition, it has high environmental friendliness. resistance to all types of precipitation and temperature changes, as well as high strength of the material. The disadvantage of the material is the sensitivity to mechanical damage. In terms of design, vinyl siding has an advantage over lining. The material is oriented to withstand a significant temperature range: from minus to plus 50 degrees. Presented on the market with a wide spectrum of color palette, siding has high strength and, importantly, resistance to rotting. Unlike the lining, which is tightly attached to the frame, vinyl siding has a more free fit, which does not allow condensate to stagnate.