What is BS EN 13859-2 - Flexible sheets for underlays for waterproofing of walls about?
BS EN 13859 is a European Standard that discusses flexible sheets for waterproofing. The main objective of BS EN 13859 is to ensure optimal performance of flexible underlays for the waterproofing of walls such that they play a positive role in maintaining the integrity of your civil engineering works.
BS EN 13859-2 is the second part of the series that specifies the characteristics of flexible sheets for underlays for walls which are to be used in walls behind outside wall coverings in order to avoid penetration of wind and water from outside.
Who is BS EN 13859-2 - Flexible sheets for underlays for waterproofing of walls for?
BS EN 13859-2 on flexible sheets for waterproofing is useful for:
- Flexible plastics, bitumen and rubber sheet manufacturers and suppliers
- Companies offering waterproofing solutions
- Architects
- Civil engineers
- Contractors
- Quality control personnel
- Certification bodies
Why should you use BS EN 13859-2 - Flexible sheets for underlays for waterproofing of walls?
An underlay for walls is a factory-made flexible sheet of plastics, bitumen, rubber or other suitable materials, which are used behind external wall coverings. They are often referred to as building wraps, wall wraps or building paper that are an integral part of wall cladding systems for buildings.
In this regard, BS EN 13859-2 provides the best industry recommendations on product characteristics such as tolerances on length, width, straightness and mass per unit area, and includes guidance on evaluation of conformity, marking, labelling and packaging of flexible sheets for underlays for waterproofing of walls. It also provides reference standards for test methods that can determine whether your products exhibit the necessary performance when it comes to water penetration, exposure to fire, flexibility, tearing and dimensional stability.
Thus, if you are a manufacturer of flexible sheets for waterproofing, complying with BS EN 13859-2 can help demonstrate the performance and durability of your product, ensuring that they are fit for purpose and effective at the point of use.
What’s changed since the last update?
BS EN 13859-2:2014 supersedes EN 13859-2:2010. BS EN 13859-2:2014 includes some technical changes with respect to EN 13859-2:2010. These include:
- Application related characteristic emissivity has been added
- Wording and Annex ZA have been adapted to the CPR
