NEN EN 13859-2 : 2014

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Product characteristics
   4.1 General
   4.2 Dimensions, straightness and mass per unit area
   4.3 Application related characteristics
        4.3.1 Reaction to fire
        4.3.2 Resistance to water penetration
        4.3.3 Water vapour transmission properties
        4.3.4 Resistance to penetration of air
        4.3.5 Tensile properties
        4.3.6 Resistance to tearing
        4.3.7 Dimensional stability
        4.3.8 Flexibility at low temperature (pliability)
        4.3.9 Artificial ageing behaviour
   4.4 Dangerous substances
5 Testing
   5.1 Sampling
   5.2 Test methods
        5.2.1 Determination of dimensions, straightness and mass
               per unit area
        5.2.2 Determination of reaction to fire
        5.2.3 Determination of resistance to water penetration
               Class W1
        5.2.4 Determination of resistance to water penetration
               Class W2
        5.2.5 Determination of water vapour transmission properties
        5.2.6 Determination of resistance to penetration of air
        5.2.7 Determination of tensile properties
        5.2.8 Determination of resistance to tearing (nail shank)
        5.2.9 Determination of dimensional stability
        5.2.10 Determination of flexibility at low temperature
               (pliability)
        5.2.11 Determination of resistance to artificial ageing
6 Evaluation of conformity
   6.1 General
   6.2 Initial type testing
        6.2.1 General
        6.2.2 Sampling
        6.2.3 Test results
   6.3 Factory production control (FPC)
        6.3.1 General
        6.3.2 Frequency of testing
7 Product data sheet and designation
8 Marking, labelling and packaging
Annex A (normative) Determination of tensile properties
Annex B (normative) Determination of resistance to tearing
Annex C (normative) Artificial ageing by exposure to UV and
        heat
Annex D (normative) Initial type test and frequencies of
        testing for factory production control
Annex E (informative) Example of a product data sheet
Annex ZA (informative) Clauses of this European Standard addressing
         provision of the Construction Products Directive (CPD)
Bibliography

Defines 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. Also specifies the requirements and test methods and provides for the evaluation of conformity of the products with the requirements of this document.