Over deze norm
Specifies a calculation method to determine the thermal transmittance of glazing with flat and parallel surfaces. This standard applies to uncoated glass (including glass with structured surfaces, e.g. patterned glass), coated glass and materials not transparent in the far infrared which is the case for soda lime glass products (called hereafter soda lime glass), borosilicate glass and glass ceramic. It applies also to multiple glazing comprising such glasses and/or materials.