Possible sound insulation values (examples)
black uni
17 dB
with 2 mm thickness under 8 mm laminatewith 3 mm thickness under 3 mm rubber flooring
18 dB
with 2 mm thickness under 10 mm massive parquet
20 dB
with 3 mm thickness under 3 mm PVC
25 dB
with 2 mm thickness under carpet