Soundproofing of Rooftop AC Unit with PZP Panels

Project Overview

A noisy air conditioning unit was causing significant disturbance to the surrounding area, prompting the client to seek a reliable noise control solution.

DECIBEL, in collaboration with local partner POTICHU, proposed the use of Metal perforated PZP acoustic panels, a robust outdoor-grade product specifically designed to absorb and block industrial noise.

The project involved a rooftop installation that required both precision planning and logistical coordination, as all structural elements and panels had to be lifted and assembled on top of the building. Despite challenging access and tight working conditions, the project was delivered successfully.

Challenge

The main challenge was the high noise output from the air conditioning unit, which negatively affected both the immediate environment and neighbouring buildings.

An additional complication was the need to maintain access around the unit, requiring the soundproofing structure to be positioned 1.5 metres away from it, three times the originally planned distance. This added complexity to the acoustic design and installation.

Scope of Work

• Site inspection and noise source identification
• Acoustic and structural design of a rooftop enclosure
• Logistics coordination for rooftop transport of materials
• Installation of the supporting structure
• Supply and mounting of 8 custom-sized PZP acoustic industry panels
• Final testing of acoustic performance after installation

Solution

The solution centred around a freestanding galvanised steel construction frame designed to support eight PZP acoustic panels, specifically sized for the project. The structure was offset 1.5 metres from the unit to ensure safe and easy access during and after installation.

Day one focused on transporting all parts to the rooftop and assembling the full frame. On day two, the acoustic panels were mounted with precision onto the completed frame. These weather-resistant panels offered high durability while providing excellent noise absorption in an outdoor industrial setting.

Result

The final soundproofed structure significantly reduced the noise impact of the air conditioning unit. Testing conducted immediately after installation confirmed audible improvements in the surrounding area.

The client was satisfied with the results, and the project met all performance and accessibility requirements.

The project was completed on time and to a high acoustic standard.

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