OEM/ODM Aluminium Soundproof Windows Manufacturers & Exporter

STC (Sound Transmission Class) is evaluated under ASTM E413 over a frequency range of 125 Hz to 4,000 Hz, widely utilized across North American building standards. Rw (Weighted Sound Reduction Index) is measured under ISO 717-1 / ISO 10140 across 100 Hz to 3,150 Hz, common in European, Australian, and international projects. For fenestration facing urban transit or airports, it is essential to request the Ctr (traffic noise spectrum adaptation term). A window rated at Rw 45 dB with a Ctr of -4 dB yields an effective sound insulation rating of 41 dB in real-world street conditions.

Standard double glazing (such as 5mm + 12A + 5mm) contains equal glass thickness on both sides of a narrow air space. This creates a mechanical spring-mass resonance in the low-frequency realm (typically between 120 Hz and 200 Hz)—the exact frequencies generated by diesel engines, bus accelerations, and heavy rail. At this resonance point, the assembly can actually transmit more noise than a single pane of thick glass. True acoustic windows resolve this with asymmetric panes (e.g., 8mm + 16Ar + 6mm) paired with PVB acoustic interlayers that provide internal viscous damping.

Acoustic waves migrate through any air gap. Our window and door sash frames utilize three continuous EPDM rubber perimeter seals with vulcanized seamless corners, preventing corner separation. In our sliding systems, we integrate specialized mechanical side-pressure compression hardware that pulls the moving sash tight against the frame upon latching, eliminating the traditional reliance on felt brush strips which leak high-frequency sound waves.

For intense low-frequency aviation noise, we configure our SoundFortress profile line with a triple-barrier or heavy asymmetric laminated IGU: 10.76mm Sound-Acoustic PVB Laminated + 18mm Argon cavity with warm-edge composite spacer + 8.76mm Acoustic PVB Laminated. This configuration reaches an Rw rating of 48 to 50 dB with an exceptional low-frequency Ctr performance, cutting roar and cabin engine hum down to a whisper-quiet NC-25 interior background noise criterion.

Yes. 100% of our production is made to order for architectural tenders. Our factory houses 5-axis CNC profile machining centers capable of handling extrusions up to 6.5 meters in length. Surface treatment options include AkzoNobel architectural powder coatings, AAMA 2605 fluorocarbon (PVDF) for aggressive coastal environments, and high-precision electrolytic anodizing resistant to high UV and salt fog corrosion.

We employ strict export-grade packaging standards: all profiles are wrapped in micro-foam protective membrane, structural corners are reinforced with high-density impact buffers, and complete glazed units are secured onto heavy-duty fumigated wooden crates or custom welded steel A-frames. Desiccant packs prevent container condensation corrosion, ensuring every unit arrives ready for direct crane hoisting on site.