Soundproof Window Singapore – Double Glazed Windows
Pang Giap is the supplier and contractor of double glazed soundproof windows in Singapore for HDB flats, condominiums, landed houses, offices, hotels and commercial properties. We have more than 30 years of experience in window replacement and installation works.
In Singapore, noise is a common problem due to the country’s high population density, with many people living close together near traffic, MRT lines and busy neighbourhood areas. This often causes unwanted noise to enter homes and offices, affecting rest and concentration.
A soundproof window is a specially built window system designed to reduce outside noise entering the room.
Our soundproof windows use a double glazing window system with double glazed glass and heavy duty support frames to improve noise reduction and create a quieter, more comfortable living and working environment.
For rooms that require stronger noise isolation, we also supply soundproof doors in Singapore to complement our soundproof windows.
For normal or standard window types, you may also visit our glass window page.
What Is a Double Glazed Window?
A double glazed window has two layers of glass separated by a sealed air gap to improve sound insulation and reduce heat transfer, whereas an ordinary window is usually single glazed with only one layer of glass. Because of this extra layer and insulating air space, a double glazed window can provide better sound insulation and reduce outside noise more effectively than an ordinary single glazed window.
Double Glazed Soundproof Window |
What Type of Noise Can Soundproof Windows Reduce?
Double glazed windows can help reduce many types of outside noise, including:
1. Traffic and transport
Engine sound from passing vehicles, horn sounds, and MRT trains.
2. Construction and road work
Loud impact sound from hacking and hammering, continuous machinery sound, intermittent drilling and cutting, as well as vibration from nearby construction and road works.
3. Neighbour and corridor
Voices, shouting, children playing, door slamming and other disturbance from neighbours or common corridors.
4. Entertainment and household
Karaoke, television, music and other loud sound from nearby homes or premises.
5. Coffee shop, playground and community
Disturbance coming from downstairs coffee shops, playgrounds and other busy shared public areas.
6. Sports and outdoor activity
Pickleball and other sounds from nearby courts or outdoor activity areas.
How Much Sound Can Our Soundproof Window Reduce?
Construction noise can range from around 70 to 120 dB, while traffic noise is usually around 60 to 90 dB. Our soundproof window can help reduce noise to a more comfortable indoor range of around 35 to 45 dB and below, depending on the type of sound, how close the sound source is, and where the noise is coming from.
While no window can block 100% of all sound, our specialised double glazed soundproof windows can significantly reduce unwanted noise and make your room much quieter and more comfortable.
Our Soundproof Windows Block Traffic Noises |
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Our Soundproof Windows Block Traffic Noises |
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Soundproof double glazed windows for HDB, condos & offices |
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Soundproof double glazed windows for HDB, condos & offices |
Where Are Soundproof Windows Installed in Singapore?
1. HDB windows facing corridor – to reduce sound and disturbance from neighbours and common corridors.
2. Windows facing outside – to reduce sound and vibration from nearby construction works, public areas, traffic and MRT trains.
3. Recording studios – to improve sound insulation and reduce outside disturbance during recording.
4. Home theatres – to create a quieter and more immersive viewing environment.
5. Karaoke rooms – to reduce noise entering from outside and improve privacy inside the room.
6. Offices requiring a quiet environment – to improve concentration, meetings and day-to-day work comfort.
7. Hotels and serviced apartments – to provide guests with a quieter and more comfortable stay.
How Our Soundproof Window System Work
Our soundproof windows feature:
- 1. Double Glazed Glass
- 2. Heavy Duty Aluminium Frame
- 3. Soundproof Fibre Inside The Frame
- 4. Multi-Point Lock System
- 5. Airtight Gasket Seals
Below is how each component helps to improve sound insulation:
1. Superior Double Glazed Soundproof Glass
Double Glazed Glass Section Show Air Gap Spacing |
Our double glazed glass is around 18mm thick. It consists of 2 layers of 6mm float glass separated by a 6mm air space in between.
Sound travels through vibrations. With 2 layers of glass and an air space between them, the glass system helps to reduce the transfer of sound from one side to the other. The air gap acts as an insulating barrier that helps weaken sound waves before they pass through the second layer of glass.
This double glazed construction helps to improve sound insulation and makes the window more effective at reducing unwanted noise compared to ordinary single glazed glass.
Double glazed glass with 1 side laminated glass is also available upon request as an optional upgrade.
2. Heavy Duty Window Frame
The window frame also needs to be sound insulated. Having soundproof glass without a sound resistant frame is insufficient. Our heavy duty aluminium frame is about 3 inch thick, as compared to normal window frame which is only around 1.5 inch. The thicker frame provides strong support for the double glazed glass, and it also serves as additional barrier to reduce sound transfer.
3. Soundproof Fibre Inside the Window Frame
Our high density fiber wool is an excellent sound absorber that is inserted inside our heavy duty window frame. The fiber wool absorbs sound energy, increase the density of the frame and reduce vibration caused by noise, which helps improve the overall sound insulation.
4. Multi-Point Lock System for a Tighter Airtight Seal
Our multi-point lock system is a huge upgrade over traditional single point locks which only secure the window at the center. Our lock system consists of heavy duty window handle lock, with vertical shoot locks at the top and bottom of the window panel. When the window handle is turned (to close the window), the top and bottom shoot locks are activated at the same time, pulling the window panel tightly against the frame.
This allows the entire window to close more tightly and create more airtight seal at the top and bottom, not just the center of the window. As a result the soundproof performance of our windows is significantly improved.
5. Airtight Window Gasket (Rubber Seals) Around All 4 Sides
We also have thick window gaskets (rubber strip seals) installed on all 4 sides of our window panels. These gaskets are sound resistant. When the windows are closed tightly, the gaskets compress firmly to close gaps around the edges and help prevent sound from passing through.
This is why our soundproof windows are more effective than ordinary windows. It is not just the double glazed glass alone, but the combination of thick sound-insulating glass, heavy duty aluminium frame, high density fibre wool, multi-point lock system and airtight gasket seals that work together to reduce sound transfer and minimise sound leakage.
Double glazed soundproof windows reduce noise from outside |
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Double glazed soundproof windows reduce noise from outside |
Can soundproof windows be installed without removing the existing window?
Yes, depending on the site condition, soundproof windows can be installed as an additional inner window without removing the existing window. This is a common method used to improve noise reduction while keeping the original window intact. This is especially useful for new HDB BTO units and some condominiums where replacing the existing windows may not be allowed.
Soundproof windows installed inside room, without removing existing windows |
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Soundproof windows with multi-point lock system. |
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Soundproof windows installed without removing existing windows |
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Soundproof windows with multi-point lock system. |
Soundproof Sliding Window
Besides soundproof casement windows, we also supply and install soundproof double glazed sliding windows
 Soundproof Sliding Window with Safe & Secure Multi-Lock |
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 Double Glazed Sliding Window Reduces Noise |
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 Soundproof Sliding Window installed for HDB flats |
Why Install Sliding Windows?
1. Suitable for HDB Units Facing Corridors
HDB guidelines generally do not allow casement windows for corridor-facing units, as outward-opening panels may obstruct the corridor and create safety hazards.
Sliding windows are therefore the preferred option, as they open sideways within the frame without protruding into the passageway. As a result, most corridor-facing units install sliding or fixed windows for safety and compliance.
2. Compliance with Condo / MCST Regulations
In many condominiums, window replacements are subject to guidelines set by the MCST. Homeowners are typically required to replace windows with the same type and appearance as the original installation.
For example, if the unit was originally fitted with sliding windows, it must be replaced with sliding windows. Similarly, casement windows must be replaced with casement windows. This ensures a consistent exterior appearance across the building façade.
Why Our Soundproof Sliding Windows Are Effective
Our soundproof sliding windows are designed using a double glazing system combined with advanced sealing and structural features. Each component works together to reduce noise transmission, improve airtightness and ensure long-term durability.
1. Superior Double Glazed Glass (18mm Thickness)
Our soundproof sliding windows use 18mm double glazed glass, designed to reduce sound vibration and transmission. The dual-layer glass with an air gap helps absorb and weaken external noise.
2. Multi-Locking System
Equipped with a multi-point locking system, the window seals more tightly when closed. This improves airtightness, which is critical for soundproofing, while also enhancing security by making the window more difficult to force open.
3. Heavy Duty Frame (Euro Profile)
Our windows use a thick, heavy duty aluminium frame with a Euro profile design. The increased thickness and strength help reduce sound penetration compared to standard lightweight window frames.
4. 8-Roller System for Smooth Operation and Durability
Each sliding panel uses 8 rollers instead of the usual 2, allowing the window to slide more smoothly and evenly. This reduces wear and strain on the system, making it more durable and reliable for long-term use, especially for heavier double glazed panels.
5. Sound Reduction Mohair Seals
High-density mohair seals are installed on all four sides of each window panel. These seals help close small gaps between the panel and frame, further blocking sound from passing through.
Our double glazed glass prevents most noise from travelling into the room |
FAQ on Soundproof Windows
1. Are double glazed windows soundproof? What is the difference between soundproof windows and double glazed windows?
Soundproof windows are a specialized type of window built for noise control. Double glazed windows are the most popular type of soundproof window because they use double glazed glass to reduce transfer of sound.
2. Are soundproof windows allowed in HDB flats?
Yes HDB homeowners are allowed to install soundproof windows as long as they follow the HDB guideline.
For HDB flats handed over from 1st July 2007 onwards, installation or replacement of new windows will need to follow the window configuration and colour originally provided by HDB.
But for the service yard, only the colour needs to follow original window provided by HDB.
For older HDB flats (handed over before 1st July 2007) there is no restriction, homeowners can choose their preferred window types and colours.
3. Can soundproof windows block MRT or traffic noise?
Vehicles from traffic road, passing MRT trains, and general road noise give off constant and low-frequency sounds that can be disturbing and annoying. Our soundproof double glazed windows combined with airtight locking system can significantly reduce these noises to an extent that what used to be a loud distracting noise will now sound more like a soft hum – barely noticeable after some time.
If you have any enquiry or book an appointment, please contact or email us.