Finishing materials - a class of building materials for decoration of buildings and structures, protecting them from harmful environmental influences, improving hygienic and operational properties. By appointment, the finishing materials are divided into actually finishing - wallpaper, paintwork materials, linoleum, plaster, putty, etc. structural and finishing - are used as enclosing elements (gypsum plasterboard, facing brick, suspended ceiling, etc.). special finishing - perform additional functions to protect people from harmful production factors, for heat and sound insulation.