DIN EN 16012:2012-04

To provide procedures for the use of existing steady-state methods (EN 12667 Thermal performance of building materials - Determination of thermal resistance by means of guarded hot plate and heat flow meter apparatus and EN ISO 8990 Thermal insulation - Determination of steady-state thermal transmission properties - Calibrated and guarded hot box) for the determination of the declared value of reflective insulation products: - For multi-foil insulation - For products with reflective surfaces - For single layer foils or multiple layers in the form of pockets. The declared value should represent the value to be expected over a reasonable working life and should include the surface emissivity of the reflective surface.