This European Standard specifies the requirements for factory made reflective insulation products@ which are used for the thermal insulation of buildings. The products are manufactured in the form of rolls@ boards or sheets and are used in conjunction with an air space or spaces and in non-load-bearing applications. It applies to thermal insulation products that derive a proportion of their claimed thermal properties from the presence of one or more reflective or low emissivity surfaces together with any associated airspace(s). This European Standard describes product characteristics and includes procedures for testing@ evaluation of conformity@ marking and labelling. This European Standard does not specify the required level of a given property to be achieved by a product to demonstrate fitness for purpose in a particular application. The levels required for a given application are to be found in regulations or non-conflicting standards. This European Standard covers the use of products for heat retention in buildings (cold or temperate climate) and an informative annex provides for the provision of further information on the product performance for applications with downwards heat flow.