Page 14 - Laqfoil Acoustic Catalog

The European standard EN ISO 11654 classifies building materials based on the value of their sound absorption coefficient αω:
Laqfoil Perforated Stretch PVC Ceilings
Laqfoil perforated PVC stretch ceiling membrane is the easy way to create acoustic comfort with the attractive appearance of a stretched ceiling.
CLASS OF NOISE ABSORBING MATERIAL (EN ISO 11654):
αω VALUES
CLASS OF NOISE ABSORPTION (VDI 3755/2000)
A
0.9,0.95,1.0
Maximum Absorbency
B
0.8,0.85
Maximum Absorbency
C
0.6,09.65,0.7,0.75
Highly Absorbent
D
0.3,0.35,0.45,0.5,0.55
Absorbent
E
0.15,0.2,0.25
Low Absorbency
Non Classified
0.0,0.05,0.1
Reflectant
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