TS EN 13956

TS EN 13956 is a standard for flexible sheets used in roof waterproofing, covering the definitions, key characteristics, requirements and conformity assessment framework for plastic and rubber sheets. It also includes sheets made from blends and alloys, such as thermoplastic rubber materials, so that a single technical reference can be used across related polymer-based waterproofing products.

How the roof waterproofing material family is organised

Roofing membranes are intended to keep rainwater and meltwater out of the building envelope on both flat and pitched roofs. Plastic and rubber sheets are valued for their flexibility, which helps them accommodate joints and complex details, but their service behaviour depends on more than material type alone. Thickness, tensile strength, elongation, tear resistance, seam performance and ageing resistance are all part of the broader performance picture. This standard brings those product concepts together under a common technical vocabulary and set of characteristics.

What the standard framework covers

• Plastic and rubber sheets intended for roof waterproofing are covered.
• Products made from blends and alloys, including thermoplastic rubber sheets, are included.
• It specifies requirements and test methods and supports evaluation of conformity.
• The related properties are assessed through referenced test standards for mechanical, physical and durability-related performance.
• It provides a common reference for consistent use of definitions and characteristics across the product family.

From a general technical perspective, standards like this help manufacturers, designers and installers work with the same performance language. That makes product selection, site application and quality comparison more consistent. In practice, however, the performance of a roofing system also depends on seams, detailing, substrate conditions and workmanship, not only on the sheet material itself.