TS EN 13969/A1

TS EN 13969/A1 is an amendment to the standard dealing with definitions and characteristics for bitumen damp proof sheets, including bitumen basement tanking sheets. It provides a common technical framework for flexible waterproofing sheets used against ground moisture and water-related action in building applications, helping define how the product family is identified and described.

From a general technical perspective, bitumen damp proof sheets are layered materials used in building envelopes, foundations and below-ground structures to limit the passage of moisture. Bitumen acts as the main waterproofing binder, while the flexible sheet structure supports crack-bridging ability, conformability and continuity during installation. In practice, properties such as thickness, mass, tensile behaviour, low-temperature flexibility and water resistance are typically central to understanding how these products perform in service.

How the product family is conceptually divided

The title distinguishes between damp proof sheets and basement tanking sheets. In general use, damp proofing products are associated with limiting rising damp and moisture transmission from adjacent construction layers, whereas basement tanking products are associated with more demanding below-ground waterproofing conditions around retaining walls and cellar structures. This terminology matters because it helps link the product to the expected moisture exposure and application context.

As an A1 document, this listing should be understood as an amendment related to the parent standard rather than as a standalone rewrite of the full technical specification. The useful customer value here lies in understanding the subject matter: flexible bituminous sheets form a key part of waterproofing systems where continuity, durability and correct product designation are important.