CSN EN ISO 10581 This document specifies the characteristics of homogeneous floor coverings, based on poly(vinyl chloride), supplied in either tile or roll form. Products can contain a transparent, non-PVC factory finish. To encourage the consumer to make an informed choice, this document also includes a classification system (see ISO 10874) based on intensity of use, which shows where these floor coverings give satisfactory service. It also specifies requirements for marking. Original English text of CSN EN Standard. The price of the Standard included all amendments and correcturs.