This European Standard specifies the requirements for in-situ formed bound EPS products (BEPS) for the thermal and/or sound insulation of buildings when applied to walls, ceilings, roofs and floors. The products are manufactured as factory premixed EPS dry mortar. This Part 1 of the standard is a specification for the bound EPS products before installation. Part 1 of this European standard describes the product characteristics and includes procedures for testing, marking and labelling And the rules for evaluation of conformity, The standard does not specify the required class or level of a given property to be achieved by a product to demonstrate fitness for purpose in a particular application. The classes and levels required for a given application are to be found in regulations or non-conflicting standards. Products with a declared thermal conductivity at 10 °C greater than 0,18 W/(m ⋅ K) are not covered by this standard. This standard does not cover factory made insulation products in the form of prefabricated shapes or boards made of bound EPS. This European Standard also specifies performance requirements for airborne sound insulation and for acoustic absorption applications.