TS EN 13859-1
Flexible sheets for waterproofing - Definitions and characteristics of underlays - Part 1: Underlays for discontinuous roofing
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About This Item
TS EN 13859-1 is the Turkish designation for the standard dealing with flexible sheets for waterproofing that are used as underlays in discontinuous roofing systems. In practical building-physics terms, this topic is about the secondary protective layer beneath individual roof coverings, helping manage wind-driven rain, incidental water ingress, and moisture transport within the roof build-up.
Why underlays matter in discontinuous roofs
Discontinuous roofing refers to coverings made from separate units with joints or overlaps, such as tiles, slates, or similar elements. In those roofs, the underlay sits below the primary covering and provides a backup water-shedding layer. From a general technical perspective, the key concepts associated with such products include waterproofing behaviour, vapour permeability, tensile performance, and resistance to tearing during installation and service.
Technical context for this document
- The standard addresses the definitions and characteristics of flexible sheets used as roof underlays.
- Its subject is specifically underlays for discontinuous roofing rather than all waterproofing membranes in general.
- It helps distinguish the underlay function from the outer roof covering, which is important in roof design and specification.
- Broader product performance is typically understood through material properties and declared characteristics rather than through the scope wording alone.
- Publication Date: 17.01.2006
- Standard Status: H (İptal Edilmiş Standard/Withdrawn standard)
- Publisher: TSE
- Document Language: en, fr, de
- ICS Classification: 01.040.91 Yapı Malzemeleri ve Yapılar (Terimler); 91.100.50 Bağlayıcılar, Sızdırmazlık Elemanları
- Pages: 33
- Source Standard: EN 13859-1:2005
- International Equivalents:
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