Transformer noise concerns

• Low-frequency tonal ‘humming’ noise impacting nearby residents
• Initial remediation using brick walls
• Additional treatment is required to comply with environmental noise regulations

Product features

• High sound absorption at low frequencies (60Hz to 120Hz)
• Suitable for outdoor applications
• Water repellent facing
• Must not grow mould when exposed to rain
• Tough and durable

Megasorber P100G-RG

P100G-RG 100mm acoustic polyester panel with water-repellent Soundmesh® G8 facing (Grey).

Soundproofing solutions

• Add noise barriers to block out the direct noise path to residential areas
• Line the noise barrier and all walls with Megasorber P100 to absorb transformer noise
• Line concrete footing areas with Megasorber P100 to further increase sound absorption.

Soundproofing results

• The tonal humming noise heard beyond the transformer has been vastly reduced.
• The site is now compliant with environmental noise regulations.
• There have no longer been noise complaints from local residents after installation completion in 2015.

Noise level before treatment:   78 dB(A)

Noise level after treatment:      52 dB(A)

The video below recorded the difference before and after the acoustic treatments.