for roads according to ČSN EN 1793:
sound absorption: category A3 – 8 dB
airborne sound insulation: category B3 – 26 dB
for railways according to ČSN EN 16272-3-1:
sound absorption: DL 9 dB
air sound insulation: DLR 27 dB
Uherský Brod, 688 01
You can call us at +420 737 218 315 or write us a message.