Tunnels / subways
|Absorbent / reflective||
BS 476-7, Class 0
BS EN 1793-1:1998
BS EN 1794-2:2003
|Dimensions (w x h)||
4.25 x .5M
|Sound absorption (dB)||
|Sound insulation (dB)||
|Laboratory sound reduction (dB)||
POLYSoundBlok® recycled PVC environmental noise barrier systems are manufactured entirely from high-strength reinforced PVC, negating the inherent issues that come from using timber. POLYSoundBlok is a highly durable rigid panel that will not warp or shrink, is rot-proof and resistant to aggresive environments and compounds such as salt spray and oils, all without the need for additional surface treatments throughout its operational life.
Barriers are designed to be maintenance-free for 40 years.
The materials of construction utilised in the environmental noise barrier systems are exceptionally durable, providing years of maintenance-free performance without further treatment.
Whether selecting reflective or absorbant options, high-density composite surfaces in conjunction with high-density mineral infill panels ensure consistent high acoustic performance throughout the length of the barrier. All designs are certified to the very latest European standards. A5 for absorption and B3 for reflectivity. Its absorptive material is made from recycled PET bottles diverting waste from oceans.
Composite materials will not warp or shrink ensuring acoustic tightness of the barrier is not compromised over its operating life. POLYSoundBlok can span 4.25m bays.
Gramm environmental noise barriers are manufactured in the UK to ISO9001. Fully CE marked for road schemes.
Gramm Barrier Systems is the only noise barrier specialist in the country to give a 30-year guarantee on all acoustic fencing, acoustic barriers and noise barriers, with a 40-year guarantee on plastic systems.
All materials and installations are to such a high standard that the company is the only noise barrier specialist to have all works backed and insured by the government.