A. Soundproof windows cannot eliminate every sound. They mainly reduce noise entering through the window, such as road traffic, vehicle horns, aircraft, trains and outdoor activity. Some noise is structure-borne and travels through walls, floors or ceilings, including renovation drilling, footsteps, piano playing, mahjong, neighbouring voices and construction work.
A. No. Sound insulation is a complete system, and every component must prevent sound leakage. Replacing only the glass leaves the original aluminium frame as a leakage path, so the installation cannot achieve a strong acoustic result.
A. Prices within our local service area are all-inclusive and calculated from the measured area. Each window type has a minimum project area. Area requirements and prices are assessed for each custom project based on window type, installation method and location. The standard frame is white steel-reinforced PVC; custom colours cost extra. Basic transport is included where a freight lift can accommodate the glass. Soundproof windows weigh 100 g per square metre. Walk-up delivery, long-distance measurement or transport, oversized glass and scaffolding are quoted separately according to site conditions.
A. We use neutral, environmentally friendly silicone sealant to prevent air and sound leakage. It may have a temporary odour while curing, but the smell disappears when dry. Typical curing time is one to two days in summer and around three days in winter, and may be longer in colder regions. A fan can help accelerate ventilation and drying.
A. We recommend discussing the expected price range first so we can prepare a realistic estimate. The deposit may be refunded before the site visit. After measurement, it is generally non-refundable because an engineer has attended the property, except where we determine that the noise problem cannot be treated.
A. Normally no. Every window is custom-made for its opening and cannot be resold. Returns are considered only where the installation fails to provide the agreed result.
A. An insulated glass unit behaves like a fine fishing net: small gaps still allow certain frequencies to pass. Adding more ordinary panes does not provide damping for low-frequency noise. We usually recommend removing one inner insulated unit and replacing it with PVB laminated acoustic glass.
A. Yes. Most customers add one acoustic window inside the existing window and leave the original unit untouched. The original window continues to open outward or slide as before, while the added window opens inward or uses a compatible sliding configuration. This practical method causes very little wall damage and usually requires only 6–8 cm of available reveal depth.
A. For human voices and similar community noise, we recommend PVB laminated acoustic glass because it combines improved sound insulation with enhanced safety.
A. We provide add-on installation at no extra installation charge. If removing the old window involves wall demolition, plaster repair or waterproofing, we recommend arranging that work through a renovation contractor; our team will coordinate the acoustic-window installation.
A. Please contact customer service to arrange an engineer’s site measurement. Production normally takes 15–20 days, followed by local installation.
A. Noise can be low-, mid- or high-frequency, and the correct glass depends on the floor level and noise source. PVB laminated acoustic glass offers the best overall value and covers a broad frequency range. Vacuum glass also provides thermal insulation but costs more. Standard insulated glass is less expensive but offers comparatively limited noise reduction.
A. Our acoustic glass has light transmittance above 90%, so it has little effect on room brightness. Its layered construction also improves thermal insulation in both summer and winter, which can reduce monthly air-conditioning energy use.
A. Yes. We manufacture both casement and sliding soundproof windows.
A. Yes. Frosted acoustic glass is available.
A. No. Decibels use a logarithmic scale, so dividing one decibel value by another does not show how much noise has been reduced. A change from 70 dB to 38 dB is a difference of 32 dB. Perceived loudness and sound insulation depend on noise frequency, site conditions and measurement conditions. These example figures are not a guaranteed result for every installation.
| Class | Typical Area | Daytime | Night-time |
|---|---|---|---|
| 0 | Hospitals, premium villas and hotels requiring exceptional quiet | 50 dB | 40 dB |
| 1 | Education-focused areas | 55 dB | 45 dB |
| 2 | Residential and mixed commercial-industrial areas | 60 dB | 50 dB |
| 3 | Industrial areas | 60 dB | 55 dB |
| 4 | Areas alongside major urban traffic routes | 70 dB | 55 dB |