The initial reflectance class of a material doesn't take into consideration any deterioration of reflectance that might occur in service.
Therefore, the reflective material shall be assigned a maintained reflectance class which gives an indication of the potential long term energy efficiency of the material in service. This shall be given by the lowest total reflectance value resulting from durability tests of:
vega98 surfaces from Almeco accomplish all the requirements to be classified in the top energy class A+.
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