Rooftop cooling towers, exhaust fans and AHUs are the most common noise sources in commercial and industrial buildings. An enclosure is not just a cover — check seven hard metrics.
The weighted index drives adjacent-room reduction; ≥25dB composite structures are typical for sensitive spaces.
High fire rating required on roofs; both facing and fill must be A-class.
Absorption thickness drives low-frequency performance; 100mm is common.
The perforated plate must transmit sound into the absorbent layer while staying strong.
Galvanised steel or aluminium for strength and weather resistance.
Outdoor permanent service needs UV and salt-spray resistance.
Equipment needs service; the door must match the panel's sound rating and stay operable.
ASPER has delivered rooftop acoustic enclosure detailing for CNPC R&D Phase II and Shenzhen Finance Center, including composite panels, acoustic doors and framing.
Check four points: weighted sound reduction Rw (≥25dB for adjacent sensitive rooms), A-class non-combustible materials, perforated panel ratio and glass wool thickness, and outdoor fluorocarbon coating. ASPER meets all three hard metrics with test reports and detailed drawings.
Rw is the weighted sound reduction index; higher is better. For rooftop equipment (cooling towers/exhaust fans/AHU) near sensitive spaces, composite enclosures commonly target ≥25dB.
Rooftop equipment areas demand high fire ratings; both the facing and acoustic fill must be A-class non-combustible to limit fire spread.
The perforated panel is both a protective skin and an acoustic element; >20% lets sound enter the glass wool while keeping structural strength.
Yes. The enclosure exterior can be fluorocarbon coated for UV and salt-spray resistance in permanent rooftop service.
Yes. ASPER has delivered rooftop equipment acoustic enclosure detailed design, including composite panels, acoustic access doors and framing installation.
After drawing detailing we issue a three-sheet linked quotation (parameters / unit-price analysis / BOQ) within 24h; lead time depends on project scope.