TS EN 13970
Flexible sheets for waterproofing - Bitumen water vapour control layers - Definitions and characteristics
This document specifies a test for determining the ability of flexible sheets to remain watertight after being stretched at low temperature. This standard is applicable only for mechanically fastened single layer waterproofing. This standard has been drafted for application in roofing, but it may also be used in other areas where it is relevant.
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About This Item
TS EN 13970 is the standard for flexible bituminous sheets used in waterproofing, focusing on water vapour control layers and the terms and characteristics associated with them. It was drafted for roofing applications, but its technical concepts are also relevant wherever this type of membrane or layer is used in building envelopes. In general technical terms, these products help manage moisture movement through layered construction, so continuity, compatibility and correct detailing are central to their performance.
The technical role of bitumen vapour control layers
Bitumen-based vapour control layers are flexible sheet materials used to reduce or regulate the passage of water vapour within a waterproofing build-up. They are typically part of a layered system, working together with substrates, fixings and adjacent membranes. The expression “water vapour control layer” points to a component designed to influence vapour transport, rather than simply acting as a generic waterproof sheet. In practice, the distinction matters because vapour control, waterproofing and air-tightness are related but not identical design functions.
What this standard covers in terminology and characteristics
- It defines terminology and characteristics for bitumen water vapour control layers.
- Its scope is limited to flexible sheets intended for waterproofing applications.
- The document was drafted for roofing, while remaining relevant to other areas where applicable.
- It applies to mechanically fastened single-layer waterproofing.
- Publication Date: 31.03.2005
- Standard Status: U (Yürürlükteki Standard/Standard)
- Publisher: TSE
- Document Language: en
- ICS Classification: 01.040.91 Yapı Malzemeleri ve Yapılar (Terimler); 91.100.50 Bağlayıcılar, Sızdırmazlık Elemanları
- Pages: 22
- Source Standard: EN 13970:2004
- International Equivalents: EN 13970-EQV
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