According to the test referred to the reference standard EN 12572: Vapour permeability μ 20.
Absence of heavy metal pollution in water
According to UNI EN 12457-2/04 norm
Analysis for Volatile Organic Compounds
(VOC) according to UNI EN ISO 16000-9: 2006 + ISO 16000-6: 2011
Colour fastness to light
According to DIN 51094
Solar Reflection Index
According to ASTM E903-96 standards; ASTM G173-03 (2008); ASTM C1371-04a; ASTM E1980-98e1
Absence of radioactivity
According to UNI 10797:1999
100 freezinf-thawing cycles, with the UNI EN ISO rules.