TS EN 13967/A1

TS EN 13967/A1 is an amendment to the family of flexible sheets used for waterproofing, focused on the definitions and characteristics of plastic and rubber damp proof sheets, including plastic and rubber basement tanking sheets. It helps frame the technical language and basic categorisation of barrier products used in buildings, especially in floor, basement, and other below-grade applications.

What these sheets do in construction

In general technical terms, damp proof sheets are intended to limit the movement of moisture into a structure, while waterproof sheets designed for pressurised water are expected to resist more demanding water exposure. Plastic and rubber-based sheets are valued for flexibility, which helps them adapt to corners, joints, penetrations, and other detailing points where continuity matters most. Their performance depends not only on the sheet itself but also on how it is joined and installed within the building assembly.

Why definitions and characteristics matter

The phrase definitions and characteristics signals a vocabulary-and-properties focus rather than a detailed installation guide. In this product category, concepts such as thickness, mechanical resistance, water tightness behaviour, crack-bridging ability, and suitability for specific applications are typically central to how the materials are described. For this A1 amendment, only the topic indicated by the title can be stated with confidence; the specific clauses revised or the exact limits added are not inferable from the available information.

Standards of this kind support a common technical language for manufacturers, designers, and specifiers. The basement tanking context is especially important because below-ground parts of a building face moisture from surrounding soil and, in some cases, water pressure, so the membrane must be selected and detailed as part of a continuous waterproofing system rather than as an isolated sheet.