Soundproof Windows Singapore
Cut traffic, MRT and renovation noise by up to 80%. Aluminium, double-glazed and acoustic glass soundproof windows singapore for HDB, condo, landed and commercial — installed by Fortified, an authorized AluK installer and BCA-registered renovation contractor with an in-house acoustic product line.
WHAT IS A SOUNDPROOF WINDOW
Soundproof windows explained
A soundproof window is not a single product — it is an engineered assembly. The frame, glass, air gap, seals and installation method each contribute to noise reduction. A 90 dB MRT pass-by reaches a quiet 40 dB indoors only when all five layers work together.
GLAZING
Multi-layer glazing — double or triple panes
Two or three glass panes with an air or argon-filled gap between them. The gap is the actual sound barrier. A double glazed window typically blocks 30-35 dB; triple glazed pushes 40 dB+. We size the gap based on the noise frequency you face.
ACOUSTIC GLASS
Laminated acoustic glass with PVB inter-layer
A clear PVB layer sandwiched between two glass panes dampens sound vibration. Acoustic-grade PVB outperforms standard PVB by 4-6 dB. We specify laminated glass for windows facing PIE, BKE, MRT lines and busy main roads.
FRAME
Thermally-broken aluminium frame with acoustic seals
The frame matters as much as the glass. We use thermally-broken aluminium with EPDM acoustic seals to stop sound conduction at the frame. Single-chamber aluminium is never specified for soundproof windows.
SEALS
Compression seals and dual-action gaskets
A 1 mm gap around the sash leaks more sound than the rest of the window combined. We use EPDM compression gaskets on every soundproof window we install, and pressure-test the seal during handover.
INSTALLATION
Correct site installation and reveal sealing
Even the best soundproof glass window fails if the gap between window and reveal is not properly packed. We use acoustic-grade backer rod and non-hardening sealant — never plain silicone.
How soundproof windows reduce traffic and MRT noise
Noise reduction windows work through three principles operating together. The phrase “noise reduction windows” and “soundproof windows” mean the same product category — Singapore retailers use them interchangeably. Understanding the mechanism explains why some windows quoted as soundproof deliver only modest results, while properly engineered ones cut traffic and MRT noise by up to 80 percent.
1. Mass — heavier glass blocks more sound. A single 6mm glass pane reduces noise by roughly 28 dB. Multi-layer laminated glass reaches 35 dB. A triple-glazed laminated acoustic stack reaches 45 dB. Doubling the mass of glass adds approximately 6 dB of reduction at most frequencies. This is the foundation of any noise reduction windows specification.
2. Decoupling — air gaps break vibration paths. Between glass panes, an air or argon gap of 12 to 20 mm prevents sound vibration from transferring directly across. This is especially effective against the low-frequency rumble of MRT trains and arterial road traffic — frequencies that mass alone struggles to block. Wider gaps work better but trade off against window thickness.
3. Sealing — eliminating gaps where sound leaks in. Even the best glass fails if the frame leaks. A 1% air gap around the window perimeter can cut overall noise reduction performance by 30%. Window noise reduction depends as much on the gaskets, weather strips, and the installation reveal seal as on the glass itself.
Passive noise reduction vs active noise cancelling windows. True active noise cancelling windows — systems that emit anti-phase sound waves to cancel incoming noise — are not commercially available in Singapore for residential use. Windows marketed as noise cancelling windows in the Singapore market are almost always passive: double or triple-glazed laminated acoustic glass that physically blocks sound. Passive systems cover the full 100 to 8000 Hz spectrum where traffic, MRT, and aircraft noise live. Active cancelling tech remains limited to headphones and small enclosed spaces — it does not scale to a window-sized aperture at consumer prices.
What this means for your unit. A 75 dB outdoor traffic level — a typical busy Singapore arterial road — drops to around 30-35 dB indoors with properly specified triple-glazed soundproof windows. That is the difference between a disruptive conversation-volume noise and a quiet bedroom. The exact dB reduction depends on baseline noise level, frequency mix, and existing frame quality. A free on-site assessment measures your unit before specifying.
TYPES WE INSTALL
Four soundproof window categories
No single window type fits every Singapore noise problem. We install four categories matched to noise source, building type and budget — every type carries a 12-month workmanship warranty.
Singapore homeowners search for the same product under many names — soundproof windows, sound proof windows, noise proof windows, sound dampening windows, sound deadening windows, sound insulation for windows, sound isolation window, sound resistant windows, acoustic insulation for windows. They all describe the same goal — cutting traffic, MRT and renovation noise to a quieter indoor decibel level.
DOUBLE GLAZED
Double Glazed Singapore
Two glass panes with sealed air or argon gap. Our most popular soundproof window. Pairs with thermally-broken aluminium frames.
LAMINATED
Laminated Acoustic Glass
PVB inter-layer sandwich. Combines noise reduction with security and UV blocking. Often combined with double glazing for max performance.
ALUMINIUM
Aluminium Acoustic
Acoustic aluminium frames + glass. Pairs with double-glazed or laminated acoustic glass.
PERFORMANCE
Sound reduction performance
Window noise reduction of 35-45 dB — what acoustic glass with thermally-broken aluminium frames delivers in real installs across HDB, condo and landed.
A standard HDB single-pane sliding window blocks roughly 10 dB — letting in too much noise to sleep through MRT pass-bys, which is why noise prevention windows and noise cancelling windows are now standard spec for new BTOs facing main roads. A properly specified soundproof window blocks 20-35 dB. Our acoustic aluminium sliding double-glazed windows reduces 20-35 dB — enough to drop a 75 dB to 55 dB indoors.
- Argon-filled glazing gap for enhance insolation
- Pre-installation noise audit — we measure dB before quoting
HDB soundproof window cost in Singapore
Soundproof window cost in Singapore varies with three factors: glass build-up (double-glazed vs triple-glazed laminated acoustic), frame profile (standard aluminium vs thermally-broken acoustic frame), and window size in square feet. HDB and condo applications dominate the local market, with most homeowners choosing soundproof windows for MRT, traffic, or aircraft-pathway noise reduction.
Industry pricing range in Singapore (2026, third-party sources):
- Light retrofit — upgraded weather stripping + sealing: from S$200 per window (5-10 dB reduction). Suited for highway noise over 200m away.
- Secondary glazing or acoustic film: S$600 to S$1,200 per window (15-25 dB reduction). Suited for moderate road, MRT 100-200m.
- Double-glazed soundproof window replacement for HDB: industry quotes typically S$1,200 to S$2,500 per window depending on size and glass build-up.
- Triple-glazed laminated acoustic replacement: industry pricing in Singapore starts from S$2,400 per panel (Yahoo Finance 2021 reference). Required for direct MRT or main-road frontage at 35-45 dB reduction.
These figures reflect the broader Singapore market across multiple installers. Fortified provides a written quote after a free on-site dB assessment — the same noise level requires very different specifications depending on whether your unit faces an MRT track, an arterial road, or a corridor.
HDB-specific considerations. Soundproof window installation in an HDB flat requires a renovation permit when the frame profile changes. Fortified is BCA-Registered and HDB-licensed, so the permit application is handled as part of every HDB job. We use HDB-compliant frame profiles and follow common-corridor working hours. Condo and landed soundproof window installations follow building MCST guidelines rather than HDB rules and typically allow wider profile options.
Request a free soundproof window assessment to get a written quote for your exact unit size and noise profile.
WHY SOUNDPROOF
What unwanted noise does to your health
Beyond annoyance, sustained noise exposure measurably damages cardiovascular health, sleep quality and stress hormones. WHO research shows why a quieter home is a measurably healthier home.
CHRONIC STRESS THRESHOLD
WHO Environmental Noise Guidelines: traffic noise above 70 dB triggers measurable cortisol elevation and prolonged sympathetic nervous activation.
CARDIOVASCULAR RISK
Sustained exposure above 65 dB increases hypertension and ischemic heart disease risk by approximately 30% (WHO Europe Burden of Disease 2018).
SLEEP DISRUPTION
Bedroom noise above 55 dB causes 40% sleep fragmentation and shortened deep-sleep cycles (WHO Night Noise Guidelines for Europe).
Sources: WHO Environmental Noise Guidelines for the European Region (2018), WHO Night Noise Guidelines for Europe.
BACKED BY OUR ACOUSTIC PRODUCT LINE
A soundproof window contractor who actually makes acoustic products
Most soundproof window installers in Singapore re-sell foreign brands. Fortified is different. We supply our own acoustic ceiling system to all kinds of resindtal and commercial across Singapore.
WHERE WE INSTALL
Soundproof windows for every property type
HDB
HDB Soundproof Windows
BTO, resale and rental. Permit + common-corridor working hours coordinated.
CONDO
Condo Soundproof Windows
Condo and apartment units. We work with MCST and management on noise hours.
COMMERCIAL
Commercial Soundproof Windows
Offices, F&B, clinics, recording studios. After-hours installation to keep your business operating.
OUR INSTALLATION SERVICE
How we install
Soundproof windows are only as good as the installer who fits them. Fortified handles every installation end-to-end — measurement, fabrication, glass spec, demolition and install. One team, one warranty, one number.
STEP 1
Free site assessment + dB measurement
Our project lead visits your property, takes window dimensions, identifies noise direction, and uses a sound level meter to measure baseline dB before we quote — never blind quotes.
STEP 2
Soundproof window quote + spec sheet
Written quotation with frame material, glass build-up, gas fill, expected dB reduction, lead time and total price. No hidden costs.
STEP 3
Frame and glass fabrication
Aluminium frames and laminated/double-glazed glass cut to exact site dimensions in our partner factory. Lead time typically 3-4 weeks for double glazed.
STEP 4
On-site removal and clean install
Our crew removes the existing window, prepares the reveal, fits the new soundproof window with EPDM seals, and packs the gap with acoustic backer rod.
STEP 5
Performance test + 12-month warranty
After installation, we will take a dB reading so you can compare against the baseline.
12 month workmanship warranty
WHY FORTIFIED
Why Singapore homeowners pick Fortified for soundproof windows
- BCA-registered renovation contractor with full HDB licence
- In-house acoustic product line
- Pre-installation dB measurement
- Double-glazed and laminated acoustic glass options
- Noise control windows for HDB and condo bedrooms facing PIE, AYE, KPE and main MRT lines
- Noise abatement windows for landed homes near construction sites or aircraft flight paths
- Argon-filled gap option
- 12-month workmanship warranty on every soundproof window installation
- After-hours commercial installation to protect business operations
- Singaporean project lead from quote to handover
HDB COST
Soundproof Window HDB Cost in Singapore
Soundproof window HDB cost in Singapore depends on glass build-up and window size. A standard HDB aluminium double-glazed soundproof window costs S$1,200 to S$2,500 per window. We give a written quote after a free dB site test, and the HDB renovation permit is included as part of every install.
SOUNDPROOFING FAQ
Soundproof window FAQ
How much do soundproof windows cost in Singapore?
A standard HDB aluminium double-glazed soundproof window typically costs S$1,200 to S$2,500 per window depending on size, glass build-up and frame profile. We give a written quote after a free site assessment.
Do soundproof windows really work in HDB flats?
Yes. A correctly specified soundproof window cuts about 20-35 dB.
Can I install soundproof windows in an HDB without permit?
No, Window replacement in HDB requires a renovation permit. We handle the permit application as part of every HDB soundproof window installation.
How long does a soundproof window installation take?
Lead time from order to install is 3-4weeks for double-glazed. Actual on-site installation is half a day to one day per window.
Do you install double glazed windows in Singapore for the heat too?
Yes. Double-glazed windows are popular for both noise and heat. The same air gap blocks sound and solar heat, especially with low-E coated glass.
What makes a frame acoustically effective?
An effective acoustic frame uses a thermal break (an insulating insert that decouples the inside and outside aluminium) plus EPDM perimeter seals. The thermal break stops sound conducting through the metal; the seals stop air leaks where most noise sneaks in.
What's the difference between noise reduction windows and acoustic windows?
They mean the same thing. ‘Noise reduction windows’ and ‘acoustic windows’ both describe windows specified to lower indoor decibel level — combining acoustic glass (laminated PVB inter-layer or sealed double/triple glazing) with thermally-broken aluminium frames and EPDM perimeter seals. The phrase ‘windows to reduce noise’ is the same product category.
Can you soundproof an existing window?
Yes, you can retrofit an existing window with a soundproof system rather than replacing it entirely. Two retrofit options work in Singapore: secondary glazing (a second window panel installed inside or outside the existing frame, creating an air gap of 100mm+ for 25-35 dB reduction) and acoustic film with sealing upgrades (lighter intervention, 10-15 dB reduction). Full window replacement with triple-glazed acoustic glass remains the strongest path at 35-45 dB. Choice depends on noise type (low-frequency traffic vs high-frequency MRT), HDB or condo permission rules, and budget. A free site assessment measures your baseline dB level and recommends the right path.
How do soundproof windows reduce traffic and MRT noise?
Soundproof windows reduce noise through three principles working together. First, mass: thicker, multi-layer glass blocks more sound (single 6mm pane reduces ~28 dB; triple-glazed laminated stack reaches 45 dB). Second, decoupling: air gaps between glass panes (typically 12-20mm) prevent vibration transfer, breaking the path low-frequency MRT and road noise travel through. Third, sealing: gaskets and weather strips around the frame eliminate gaps where sound leaks in (a 1% gap can cut performance by 30%). Together these three reduce traffic noise by up to 80% and bring MRT noise from disruptive (70+ dB) to acceptable indoor levels (35-45 dB).
What is the cheapest way to soundproof a window in Singapore?
The cheapest soundproofing path in Singapore depends on noise level. For light noise (highway over 200m away), upgraded sealing and weather stripping costs from S$200 per window and gives 5-10 dB reduction. For moderate noise (busy road, MRT 100-200m), secondary glazing or acoustic film starts around S$600-1,200 per window for 15-25 dB. For severe noise (direct MRT or main-road frontage), full triple-glazed replacement is necessary: industry pricing in Singapore typically starts from S$2,400 per panel. Cheapest is not always best value: a S$200 fix that delivers 8 dB on a 75 dB problem still leaves disruptive noise. Free site assessments quantify the gap before committing.
Can you get noise cancelling windows in Singapore?
True noise cancelling windows: active systems that emit anti-phase sound waves to cancel incoming noise: are not commercially available in Singapore for residential installation. The product marketed as noise cancelling is almost always passive noise reduction: double or triple-glazed laminated acoustic glass that physically blocks sound from entering. The terms are often used interchangeably in Singapore retail but the mechanism is different. Passive systems handle the full 100-8000 Hz spectrum that traffic, MRT and aircraft noise occupies, achieving 35-45 dB reduction. Active cancelling tech exists for headphones but does not scale to a window-sized aperture with current consumer technology. Ask for the dB reduction figure (not just a noise cancelling claim).
Get a free soundproof window assessment
Tell us where you live and what noise bothers you. Our project team measures your baseline dB, recommends the right glass build-up, and quotes within 48 hours. Call +65 9097 5182 or WhatsApp now.
Visit Our Showroom
FORTIFIED PTE LTD
80 Playfair Road
Singapore 367998
Operating Hours
Mon–Fri 9am – 6pm
Sat 9am – 1pm
Direct Contact
WhatsApp 9097 5182