This document provides definitions and characteristics for flexible sheets used as bituminous vapour control layers in waterproofing applications. It outlines the specific requirements and properties that these materials must meet to ensure their effectiveness in preventing moisture penetration. The content includes detailed descriptions of the materials, their performance criteria, and the conditions under which they should be applied. The document serves as a reference for manufacturers, suppliers, and users of such products, ensuring consistency and quality in the production and application of flexible sheets. It covers aspects such as material composition, physical properties, and testing methods to verify compliance with the specified standards. The information presented is intended to support the proper selection and use of these materials in construction and related industries.
*** Please note: This description may not be accurate, please refer to the official documentation.