Explore our precision-fabricated soundproof aluminium fenestration range. Each unit incorporates multi-cavity thermal break extrusions, acoustic laminated glazing units (A-IGU), and multi-point perimeter compression seals.
Rw 42dB | STC 40
Rw 38dB | STC 36
Rw 45dB | STC 44
Fire 120min | Rw 40dB
Commercial Traffic | Rw 39dB
Rw 44dB | STC 42
Rw 41dB | Gas Assisted
Rw 47dB | STC 46
Sound insulation is not merely a matter of thicker glass; it is a multi-dimensional system physics challenge. An effective acoustic aluminium window mitigates structural vibration, eliminates coincidence resonance dips, and neutralizes low-frequency urban sound transmission.
Standard insulated double glazing utilizing two sheets of identical glass thickness (e.g., 6mm + 12Ar + 6mm) experiences a severe coincidence frequency dip between 2000 Hz and 3200 Hz, where acoustic energy passes straight through due to resonant sympathetic vibration. DERCHI engineers deploy asymmetric glass configurations—such as 8.76mm laminated glass paired with a 6mm outer pane. The disparate mass profiles disrupt resonant phase synchronization, elevating sound transmission loss across all critical octave bands.
Acoustic dampening achieves peak attenuation when laminated with engineered Polyvinyl Butyral (A-PVB) or SentryGlas interlayers. The core layer acts as a viscoelastic shear damper that converts acoustic vibrational wave energy into negligible thermal energy through internal friction. In laboratory tests complying with ASTM E90 and ISO 10140-2, our acoustic interlayers suppress mid-to-high frequency airborne transportation noise, including aviation whine and steel-wheel rail screech, by up to 14 dB compared to conventional annealed glass.
Extruded aluminium is an efficient conductor of sound wave vibrations. DERCHI extrusions incorporate heavy-duty Polyamide (PA66 GF25) thermal breaks reinforced with 25% glass fiber. This composite structural separation physically isolates the exterior aluminium chassis from the interior profile, arresting lateral sound conduction through the frame. Internal chamber cavities are injected with specialized high-density polyurethane or acoustic aerogel foams to eliminate internal cavern reverberation.
An acoustic window system is only as potent as its weakest perimeter seal. A minuscule air gap equivalent to 0.1% of the window's total area degrades overall sound reduction performance by as much as 10 dB, effectively cutting perceived soundproof efficacy in half.
DERCHI soundproof window systems engineer out air leakage through a continuous tri-stage gasket matrix crafted from automotive-grade Ethylene Propylene Diene Monomer (EPDM). Vulcanized corner joints prevent shrinkage, maintaining relentless physical contact along the entire frame perimeter.
Architectural specifications require calibrated balance between structural static loads, thermal transmittance (U-Factor), and weighted acoustic damping (Rw + Ctr). Review the audited performance benchmarks of DERCHI systems below.
| System Typology | Acoustic Rating (Rw / STC) | Recommended Glazing Schedule | Thermal Value (Uw) | Air Tightness (Class) | Target Acoustic Environment |
|---|---|---|---|---|---|
| Heavy-Duty Tilt & Turn Window | Rw 46 - 48 dB (STC 45) | 8.76mm Lam (0.76 Acoustic PVB) + 16Ar + 6mm Toughened | 1.1 - 1.4 W/m²K | Class 4 (EN 12207) | Urban Arterial Boulevards, Airport Flyways, High-Density Tramways |
| Concealed Sash Casement System | Rw 42 - 45 dB (STC 42) | 6mm Low-E + 14Ar + 4mm + 0.76PVB + 4mm | 1.3 - 1.6 W/m²K | Class 4 (EN 12207) | Luxury Residential Waterfronts, City Condominiums, Boutique Hotels |
| Heavy Lift-and-Slide Patio Door | Rw 40 - 43 dB (STC 40) | 10.76mm Acoustic Lam + 16Ar + 8mm Toughened | 1.4 - 1.8 W/m²K | Class 3 (EN 12207) | Penthouses, Seaside Villas, Noise-Sensitive Terrace Suites |
| Vertical Bi-Fold / Pass-Through | Rw 39 - 42 dB (STC 38) | 6mm + 12Ar + 6mm Acoustic Laminated Float | 1.6 - 1.9 W/m²K | Class 3 (EN 12207) | Commercial Dining, High-End Cafes, Urban Entertainment Hubs |
| Architectural Fixed Facade Screen | Rw 47 - 50 dB (STC 48) | 12.76mm Acoustic SGP + 20Ar + 10.76mm Acoustic Lam | 0.9 - 1.2 W/m²K | Class 4 (EN 12207) | Recording Studios, Executive Boardrooms, Hospital Wards |
How global building standards, climate metrics, and supply chain rationalization are transforming architectural procurement over the 2025–2030 horizon.
Building codes no longer treat acoustics and energy efficiency as separate silos. High-end tenders in the UK (Part L & Part E), Germany (GEG), and North America mandate unified building envelopes where windows achieve passive-level thermal insulation (U < 1.2 W/m²K) without compromising acoustic transmission loss (Rw > 42 dB).
Global developers demand Environmental Product Declarations (EPD). Chinese top tier suppliers are rapidly migrating to hydro-powered primary aluminium billets with carbon footprints under 4.0 kg CO2/kg Al. Sourcing aluminium windows from verified low-carbon smelters will be mandatory for LEED and BREEAM certifications.
Procurement teams are shifting away from fragmented subcontracting. Sourcing exterior soundproof windows, architectural pivot entry gates, interior acoustic partitions, and commercial curtain walls from one single-source Chinese manufacturer radically minimizes field alignment errors and container shipping costs.
Rising overseas labor costs are driving the adoption of factory-glazed, fully unitized window assemblies. High-performance acoustic windows arrive on-site pre-hung with factory-aligned compression gaskets and dynamic dampening hardware, eliminating erratic on-site glazing and reducing installation time by 40%.
Headquartered in Foshan, Guangdong—the world’s undisputed epicenter of high-grade aluminium manufacturing—Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI) operates a sprawling 180,000 square meter state-of-the-art production complex. Over 600 skilled technicians, metallurgists, and facade engineers power our advanced CNC fabrication infrastructure.
Recognized as an industry leader, DERCHI has earned long-term fabrication partnerships with esteemed European system brands, delivering architectural facade projects across the UK, Germany, France, Australia, and North America.
Corners are mechanically crimped with cast aluminum corner cleat brackets and injected with two-component polyurethane bonding adhesives. This eliminates micro-fissure leakage and creates an indestructible acoustic perimeter seal.
Hardware slots, locking cam receivers, and multi-tier drainage weep holes are cut by 5-axis CNC machines to a tolerance within ±0.1mm. Precise machining guarantees that heavy-duty acoustic seals compress with mathematical consistency.
Every window unit is wrapped with 0.2mm protective film, enclosed in custom moisture-barrier polyethylene bags, and crated in fully enclosed, fumigated ISPM-15 plywood crates with integrated steel shock-absorbing foot pads.
Technical, contractual, and regulatory guidance for developers, architects, and quantity surveyors sourcing acoustic fenestration systems from China.
Submit your architectural drawings, window schedules, and acoustic performance requirements. Our facade engineering department will produce fully detailed CAD shop drawings, acoustic glass optimization models, and a competitive FOB/CIF commercial tender within 48 business hours.