HDB Sliding Window in Singapore (2026 Complete Guide by Industry Experts)
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Last Updated: 27 July 2026 | By Ho Ho Engineering & Renovation Works — HDB Licensed Sliding Window Supplier in Singapore Since 1976
Whether you're replacing an old rattling sliding window, renovating your BTO, or simply trying to understand what's actually out there — this is the only guide you need.
We've been manufacturing and installing sliding windows in Singapore HDB flats since 1976. Over 50 years of installations means we've seen every window problem, every common mistake, and every question homeowners ask. We've put everything we know into this guide — no fluff, no upselling, just straight answers.
By the end, you'll know exactly which type of sliding window suits your flat, which profile makes sense for your budget, what are the HDB regulations, and what a fair price looks like in 2026.
What Is a Sliding Window?
A sliding window is a window where one or more panels move along a horizontal or vertical track to open and close — instead of swinging outward like a casement window or folding like a bifold.
In Singapore HDB flats, sliding windows are the most common window type. They're practical, space-saving, and cheapest glass window mechanism.
Most sliding windows in Singapore are made with aluminium frames (not timber or uPVC), as aluminium holds up best against Singapore's heat, humidity, and heavy rain.
The sliding window panels typically hold either clear, frosted, or tinted glass, and the frame comes in silver, bronze, white, or black.
The track system uses rollers at the bottom of each panel. Over time, these rollers wear down and panels become harder to slide — which is usually the first sign it's time for a replacement.
4 Types of HDB Sliding Windows in Singapore
Not all sliding windows work the same way. Before you think about price or profile, you need to know which configuration fits your window opening. Here are the four types found in Singapore HDB flats:
The most common type in Singapore HDB flats. Two or more panels glide horizontally on tracks. Simple, reliable, and easy to operate. If you're not sure what type your flat has — it's probably this one.
Best for: Bedrooms, living rooms, and any standard window opening.
✅ Pros
Cheapest option — lowest cost among all four types, making it ideal if you're replacing multiple windows on a budget
Straightforward mechanism with minimal moving parts — less to go wrong
Easy to operate, clean, and maintain
Works for virtually any room in an HDB flat
❌ Cons
Maximum ventilation is limited to 50% of 67% of the window opening (one or more panel always stays fixed)
No top ventilation option — when it's raining, you have to close the window fully
No additional privacy features
A sliding window with an additional top hung panel above. The top portion swings outward for extra ventilation while the lower panels slide as usual. Very popular in Singapore because it lets air in even during a drizzle — without getting the floor wet.
Best for: Corridor-facing windows, and homeowners who want the option of ventilation without fully opening the window.
This is the go-to choice if your window faces the common corridor. You can open just the top hung panel to get airflow into the room while the lower sliding panels remain closed — keeping your privacy intact. On light rain days, the top hung panel lets air in without water coming through.
✅ Pros
Ventilation even in the rain — open the top hung panel without worrying about water getting in
Ideal for corridor-facing units — get airflow without exposing the full window to the corridor
Gives you more control over how much air comes in
Lower sliding panels can stay closed for privacy while top hung is open
❌ Cons
Slightly higher cost than a standard sliding window due to the additional top hung mechanism
Top hung panel opening is smaller than a full window — ventilation is good but not maximum
One more component to maintain
Two separate sliding window sections stacked vertically — an upper section and a lower section, each with their own independent sliding panels. Designed for corridor-facing HDB units.
Best for: Homeowners who want more ventilation and privacy control than a top hung sliding window offers.
Think of this as the upgrade from a top hung sliding window. Instead of a small top hung panel, you get a full sliding section on top — which means significantly more airflow when both sections are opened. At the same time, you can keep the lower section closed for privacy while fully opening the upper section, which is great for corridor-facing windows.
✅ Pros
More ventilation than a top hung — upper section can be opened and let in more air than top hung
Better privacy control — keep the lower section closed while the upper section is open; passers-by at corridor level can't see in
❌ Cons
Higher cost than standard sliding or top hung due to the additional section materials and labour
Instead of sliding left and right, the panels slide up and down. One panel pushes upward while the other stays fixed below.
Best for: Corridor-facing windows in HDB flats — and homeowners who want a modern-looking window with practical ventilation control.
This is the new trend in Singapore — and for good reason. The vertical sliding window has been gaining popularity rapidly, particularly among BTO homeowners and those renovating older HDB flats. The biggest draw? It is already HDB approved for corridor-facing units.
For corridor-facing windows, HDB regulations restrict what you can install. The vertical sliding window is one of the approved options — and it's arguably the most practical one. You slide the upper panel downward to open, which creates a gap at the top of the window. This means air flows in from above, not at eye level — so you get ventilation without people in the corridor being able to look directly into your flat.
✅ Pros
Most ventilation while maintaining privacy
Latest sliding window mechanism
Modern, clean look that suits contemporary HDB renovations
❌ Cons
Less common than horizontal sliding windows — fewer contractors are experienced with correct installation
Highest cost due to the specialised vertical track mechanism
Industry insight: At Ho Ho, we foresee an increase in demand for vertical sliding windows over the coming years — if your window faces the corridor or ground level, this is worth a serious look.
Not sure which type you have? Send us a WhatsApp photo at 9631 9288 and we'll identify it for you immediately — no guessing needed. Or visit our showroom to touch and feel them.
Which Sliding Window Profile Should You Choose?
Once you know the type, you choose the grade. This is where most homeowners get confused — or get shortchanged.
Here's something most people don't know: the majority of window contractors in Singapore only offer two options — the cheap one and the expensive one. No middle ground.
At Ho Ho, we saw this gap 50 years ago and decided to do something about it. That's how the Prime Sliding Window was born — and why it's now our most popular product.
1. Standard Sliding Window — From $16 psf
The Standard sliding window is the entry-level option. Budget-friendly, gets the job done, no frills.
What you get:
Basic aluminium profile
Standard rollers and locks
Minimal sound and dust insulation
1 year warranty
The honest truth: Standard windows are perfectly fine for most situations. The main thing to know is that they have no seal and no windproof block. So if you live on a high floor, you may notice the panels vibrating more during strong winds. And after 10 years or so, the rollers naturally become less smooth with daily use. Nothing dramatic — just the reality of a no-frills window over time.
2. Prime Sliding Window (Most Popular) — From $20 psf
Think of the Prime Sliding Window as the Standard's gym-going, better-dressed older sibling.
It was built specifically to fix the most common complaints about Standard sliding windows — without charging you the price of a Euro.
What makes Prime Sliding Window different:
✅ 15% heavier aluminium frame — sturdier, less shaky, lasts longer
✅ Windproof block — keeps the window steady even during strong wind
✅ Side and middle seal — better sound insulation, keeps dust and rain out
✅ Premium lock — solid, reliable, won't give up on you after 18 months
✅ Smooth roller system — glides like it should, every time
✅ 2 year warranty
Why Prime Sliding Window is our unique strength: Most factories only manufacture two grades — cheap or expensive. Ho Ho produces a genuine mid-range option that sits almost at Euro quality but at half the price. For most HDB homeowners in Singapore, Prime is simply the smartest decision.
For just $128 more than Standard on a typical 3-panel sliding window, you get a window that will serve you quietly, smoothly, and without complaints for years. The Prime basically pays for itself in reduced frustration alone. Most customers always ask us — "I'm letting you do my whole house window, any further discount?" If you are a sincere buyer, visit our showroom or call us and we will see what is the best offer we can give you.
3. Euro Sliding Window — From $35 psf
The Euro Sliding Window is the top of the range. If you want the absolute best, this is it.
What you get:
50% heavier frame than Standard — built like a tank (a very elegant tank)
Superior windproof block and multi-point seals
Best-in-class sound and dust insulation — great if you live near a busy road
High-end roller system and premium lock
2 year warranty
The Euro is popular for condo renovations, landed homes, and homeowners who simply refuse to compromise. It shows.
HDB Sliding Window Prices in Singapore (2026)
Sliding windows are priced per square foot (psf). Here's what to expect in 2026:
Profile | Price (psf) | Best For |
Standard Sliding Window | From $16 psf | Budget replacement |
Prime Sliding Window | From $20 psf | Best value — the sweet spot |
Euro Sliding Window | From $35 psf | Luxury homes, premium projects |
Example cost for a typical HDB sliding window (3 panels, approx. 32 sq ft):
Standard: ~$512
Prime: ~$640
Euro: ~$1,120
The difference between Standard and Prime? Just $128 for a typical 3-track sliding window. The difference in quality? You'll feel it every single day.
What Affects the Final Price of Your HDB Sliding Window?
Sliding Window Size
Bigger window = higher cost. Measure your window (width × height) and multiply to get square footage, then multiply by the psf price. Simple.
Number of Panels
Most HDB sliding windows have 2 panels. Some have 3 or 4. More panels, more material, higher cost.
Glass Type
Clear glass — standard price, bright and open feel
Frosted glass — great for privacy (kitchen-facing corridor, anyone?)
Tinted glass — reduces glare and heat, popular for west-facing windows
Laminated glass — 2 layers of glass, added safety
Sliding Window Frame Colour
Silver and bronze anodised finishes are standard. White and black powder-coated options are available at a slight premium — and they look really sharp in modern HDB renovations.
Your Sliding Window Contractor
Most window contractors in Singapore are HDB-licensed, so that alone is not enough to differentiate them. What really matters is experience. Installing sliding windows correctly — getting the measurements right, ensuring smooth operation, and complying with HDB regulations — takes years of practice to master.
Ho Ho has been doing this since 1976. That's over 50 years of installations across thousands of HDB flats all across Singapore. Most contractors in the market today have less than 10 years of experience. When you choose a contractor, ask how long they have been in business. The answer tells you a lot.
HDB Sliding Window Rules You Must Follow
Yes, there are rules. HDB Singapore doesn't play around with window safety, and neither do we.
Panel height: Any window panel within 1 metre from the floor must be fixed — it cannot be a movable sliding panel
Panel width: Each sliding panel must not exceed 1.2 metres in width
Safety features: All windows must have secured locks and resin stoppers on the rails
Always use an HDB-licensed contractor. It's not worth the risk.
How Long Does HDB Sliding Window Installation Take?
We know you're busy. Here's the timeline:
Site visit — We come to your flat to take precise measurements
Fabrication — 2 to 3 weeks (custom-made to fit your exact window opening)
Installation day — Done within 1 day. You barely have time to finish your kopi.
Why HDB Homeowners Choose Ho Ho Since 1976
Ho Ho Engineering & Renovation Works has been manufacturing and installing sliding windows in Singapore since 1976. That's over 50 years — which means we've probably replaced windows in flats that didn't even exist when some of our competitors started business.
🏠 HDB-licensed (HB-02-0677-D) and BCA-registered — fully compliant, no shortcuts
🏭 Direct manufacturer — we make our own windows, so you pay factory price, not middleman price
🪟 3 sliding window profiles available for your selection — Standard, Prime, and Euro. Most window contractors in Singapore only have two.
📍 Showroom at Pandan Loop — come hold the windows, feel the difference, and decide for yourself
Seriously — visit our showroom and slide all 3 sliding window profiles. The difference is immediate. The product speaks for itself.
Get a Free Quote for Your HDB Sliding Window
Ready to get started? Here's how:
Send us your window dimensions (width × height) or your floorplan
Tell us which type and sliding window profile you want — or just send a photo and we'll advise you
We'll send you a personalised quote fast
📞 Call: 6747 9019 💬 WhatsApp: 9631 9288 📍 Showroom: 194 Pandan Loop #07-07, Singapore 128383 🕐 Mon–Fri 10am–4.30pm | Sat 10am–2pm
Sliding Window Frequently Asked Questions
What is the best sliding window for HDB flats in Singapore? For most HDB homeowners, the Prime Sliding Window is the best choice. It has a heavier aluminium frame, windproof block, sound and dust seals, and smooth rollers — almost Euro quality at half the price. It was designed specifically for the Singapore HDB context and is our most popular product by far.
How much does an HDB sliding window cost in Singapore in 2026? From $16 psf for Standard, $20 psf for Prime, and $35 psf for Euro. A typical 3-panel HDB sliding window
(32 sq ft) costs between $512 and $1,120 depending on the profile you choose.
What are the types of sliding windows available for HDB flats? There are four main types: standard horizontal sliding window, top hung sliding window, double section sliding window, and vertical sliding window. The right type depends on your window opening size and ventilation needs.
Do I need HDB approval to replace my sliding window? Yes, your HDB licensed window contractor will get the permit for you at no additional cost. HDB will send you an SMS when the permit is approved, or you can log in to the HDB portal to check the permit status.
How long does HDB sliding window installation take? Fabrication takes 2 to 3 weeks. Installation is done within 1 day.
What warranty comes with HDB sliding windows? Standard: 1 year. Prime and Euro: 2 years, covering locks, rollers, and seals.
Can I replace just the lock instead of the whole window? Yes — if your frame is still in good condition, we can replace just the lock. WhatsApp us a photo and we'll advise you honestly on whether repair or full replacement makes more sense.
Want expert advice for your specific flat? Contact Ho Ho today — Singapore's HDB sliding window specialists since 1976.
Beside sliding window, we also offer other glass window
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