TS EN 13984/A1

TS EN 13984/A1 is the A1 amendment to EN 13984, which addresses plastic and rubber vapour control layers used in waterproofing-related building applications. It updates the technical framework for the definitions and characteristics of these materials; it does not represent the product itself, but the amendment layer applied to the base standard.

In general technical terms, vapour control layers are used to manage moisture movement within the building envelope. Their role is to help regulate the amount of water vapour diffusing from the interior into the structure, supporting condensation control and the performance of adjoining layers. Flexible plastic and rubber sheets are selected for this function because they can offer different vapour resistance, flexibility and mechanical properties.

Why the definitions and characteristics matter

This subject is distinct from general waterproofing because it focuses specifically on vapour control. The function of a layer is not only to act as a physical barrier to water, but also to provide a defined resistance to vapour transmission so that roof, wall or floor assemblies can work properly together. For that reason, the definitions, material categories and characteristics are important for understanding how the product is identified and assessed in practice.

• A1 indicates an amendment to the earlier EN 13984 text.
• The subject covers flexible sheets made from plastic and rubber.
• The focus is on layers intended to control water vapour.
• The document is centred on terminology and material characteristics.
• This record represents a withdrawn edition.