HDB Window Grill Singapore – Aluminium & Metal Designs For HDB & BTO Flats
Choosing the right HDB window grill is essential for safety, ventilation, and long-term usability—especially in high-rise living.
At Ho Ho, we supply and install HDB-approved aluminium and metal window grills designed for HDB flats and BTO homes in Singapore.
With a focus on child safety, practical opening mechanisms, and durable finishes, our HDB window grill solutions provide peace of mind without compromising everyday comfort or aesthetics.
With over 50 years of experience since 1976, Ho Ho is a leading hdb window grill supplier in Singapore. We have helped thousands of homeowners across the island enhance their home’s security, appearance, and overall value with durable, well-crafted aluminium and metal window grilles—offered at direct factory prices by an experienced HDB-licensed contractor.
For your peace of mind, we are an HDB-licensed contractor (HB-02-0677D) and a BCA-registered company, ensuring all window grill installations comply fully with HDB requirements, local regulations, and safety standards.
Types of HDB Window Grills We Supply and Install in Singapore
We supply and install a wide range of HDB window grills in Singapore, including aluminium, mild steel slim, wrought iron, and cat-proof window grille designs, suitable for both BTO and resale HDB flats. All window grills are designed with safety, durability, easy cleaning, and proper spacing in mind, ensuring compliance with HDB guidelines while providing long-lasting protection, ventilation, and a modern finish
All You Need to Know About HDB Window Grills in Singapore
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On this page, you’ll find everything you need to know about choosing the right window grille in Singapore for your HDB or BTO flat. We cover the key considerations, options, and practical details to help you make a confident and informed decision.
This guide explains:
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The advantages and disadvantages of each type of HDB window grill in Singapore
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The design, colour, and opening mechanism options available for different window grill types
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A comparison of the most common HDB window grill options:
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Aluminium Window Grill
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Mild Steel Slim Window Grill (a stronger alternative to invisible grills)
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Wrought Iron Window Grill
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Cat-Friendly Window Grill
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The price range for each type of HDB window grill in Singapore
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How to request a quotation for your HDB window grill
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Why homeowners choose Ho Ho as their window grill supplier
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Typical lead time for HDB window grill installation or replacement
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Practical cleaning and maintenance tips to keep your window grills in good condition
Advantages and Disadvantages of Each Type of HDB Window Grill in Singapore
Aluminium Window Grill In Singapore
Advantages of Aluminium Window Grill
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Rust-resistant: An aluminium window grill does not rust, making it ideal for Singapore’s humid and rainy climate.
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Low maintenance: Aluminium window grill requires minimal upkeep compared to other window grille materials.
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Affordable: Among all window grille options in Singapore, aluminium window grill is the most cost-effective choice.
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Lightweight: Being much lighter than mild steel or wrought iron, an aluminium window grill operates smoothly and places less strain on tracks and rollers.
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Wide colour options: Aluminium window grill can be powder-coated in various colours to match your existing windows and overall home design.
Disadvantages of Aluminium Window Grill
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Lower security compared to metal window grill: An aluminium window grill is not as strong as mild steel or wrought iron, making it less suitable for homeowners who require higher security or burglary deterrence.
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Limited design flexibility: Aluminium window grill is generally limited to simple, functional designs and cannot achieve intricate or decorative patterns commonly found in wrought iron window grill.
Slim Window Grill In Singapore (Better Than Invisible Grill)
Advantages of Slim Window Grill
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Minimalist aesthetics: A slim window grill provides a clean, modern appearance that preserves outdoor views, similar to an invisible grille but with a more refined and premium look.
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Enhanced security: Slim window grills are constructed from solid mild steel or wrought iron 6 mm flat bars, offering superior rigidity and security compared to invisible grilles, which use thin stainless steel cables that can be cut with tools.
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Practical casement opening: Slim window grills are typically installed with casement openings, allowing easy access for window cleaning and emergency escape. They also look sleeker than casement invisible grilles, which often combine thick aluminium frames with visible cables, resulting in a less uniform appearance.
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High durability: Despite their slim profile, a slim window grill is strong and resistant to bending. Unlike invisible grilles, which may loosen or deform over time, mild steel slim window grill requires minimal maintenance.
Disadvantages of Slim Window Grill
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Higher cost: As a premium option, a slim window grill is more expensive than aluminium window grills and invisible grilles.
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Bar thickness: Slim window grills typically use 6 mm bars, which are thicker than invisible grille cables (around 3 mm). However, they are still significantly slimmer than standard aluminium window grills, which are usually about 25 mm thick.
Wrought Iron Window Grill In Singapore
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Advantages of Wrought Iron Window Grill
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Exceptional durability and security: A wrought iron window grill is extremely strong and resilient, providing outstanding security due to its solid construction and resistance to impact.
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Decorative appeal: Wrought iron window grill can be crafted into intricate and elegant designs, making it ideal for homeowners who want both security and a distinctive, ornamental look.
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Long-lasting performance: With proper care, a wrought iron window grill offers a long service life. Each grille is typically powder-coated and then hand-brushed in the chosen colour, providing enhanced protection against rust and corrosion.
Click here to find out more about wrought iron window grill!
Disadvantages of Wrought Iron Window Grill
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Higher cost: A wrought iron window grill is among the more expensive window grille options due to the use of high-quality materials and the skilled craftsmanship involved in fabrication and finishing.
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Classic design style: While visually appealing, wrought iron window grills typically feature classic or ornamental designs, which may not suit homeowners who prefer a more modern or minimalist interior aesthetic.
Cat Proof Window Grill In Singapore
Cat Proof Window Grill
A cat proof window grill, also known as a cat friendly window grill, can be fabricated using aluminium, mild steel, or wrought iron, depending on your preferred design, security level, and budget.
Advantages of Cat Proof Window Grille
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Enhanced cat safety: A cat friendly window grill is purpose-built to prevent cats and small pets from escaping or falling from the unit. We understand how devastating such accidents can be, which is why we are committed to helping homeowners protect their beloved pets—who are truly part of the family.
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Optimal gap size for pet safety: The grill spacing is kept within 2 inches, carefully calculated to prevent cats from squeezing through while still allowing good airflow and natural ventilation.
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No need for DIY mesh or nets: With a cat proof window grill, there is no need for additional mesh or netting, which can look unsightly and collect dust over time. This results in a cleaner appearance and makes maintenance much easier.
Click here to find out more about cat proof window grill!
Disadvantages of Cat Friendly Window Grille
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Higher cost: A cat friendly window grill (also known as a cat proof window grill) uses narrower gaps of approximately 2 inches, compared to the typical 4-inch spacing of standard window grilles. This tighter spacing requires more materials and fabrication work, resulting in a higher overall cost.
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More obstructed view: The smaller 2-inch gap increases the number of grille bars across the window. While this greatly improves pet safety, it can slightly block the view and reduce the open, unobstructed appearance compared to standard window grilles.
Aluminium Window Grill In Singapore
Aluminium Window Grill Design
Our aluminium window grill comes in 8 window grill designs to suit different HDB and BTO home styles.
Among them, HH1 is the most popular design, known for its clean, simple, and modern look that blends easily with any interior.
HH4 is a feng shui–inspired window grill design, often described as a ladder-style pattern, which many homeowners believe symbolises stability and upward growth.
Aluminium Window Grill Mechanism
Most aluminium window grills are installed as sliding window grills with 2-track or 3-track systems for ease of use and cleaning, while casement aluminium window grills are typically recommended only for single-panel windows, such as air-con ledges.
Aluminium Window Grill Colour
All aluminium window grills are available in 4 different colours to match your window frames: Silver, Bronze, White and Black.
Aluminium Window Grill For HDB BTO Flat
Aluminium Window Grille In Singapore HDB BTO
For new HDB BTO flats in Singapore, window configurations typically come in two styles - 3 section and 2 section window.
For a living room featuring a three-section window, the window grilles are commonly fitted only across the middle section, extending to a height of 3 feet. This is because the lower segment of the window is a fixed pane made of tempered or laminated glass, which does not require a grille for safety. Additionally, the topmost section, or top hung, has an opening that's narrow enough to prevent children from falling out. Custom installations that extend the grille to include both the middle and top sections can also be accommodated upon request.
Living rooms with a two-section window design usually have grilles placed only on the upper part, with a height of 4 feet for the grille. The bottom portion, as in the three-section style, consists of a fixed panel of tempered or laminated glass that doesn't necessitate grilling. Should there be a preference for full window grilling, customization options are available to meet this requirement.
HDB Approved Aluminium Window Grille In Singapore HDB BTO Service Yard
If a service yard lacks windows, window grilles must conform to designs endorsed by HDB. The image below illustrates three window grille designs that meet HDB approval for service yards. These window grilles must also adhere to the color scheme specified by HDB for the windows to ensure a uniform look for the building's facade.
Securing an HDB permit is a requisite step, adhering to HDB regulations. This permit process is offered at no additional cost. Homeowners are required to submit a copy of their floor plan and sign the HDB acknowledgement form. We will handle the process of obtaining the HDB permit for the homeowners to ensure that all window grilles are in compliance with HDB regulation.
Mild Steel Slim Window Grill In Singapore
Slim Window Grille In Singapore
The slim window grille represents the newest innovation in the market. Crafted from mild steel or wrought iron, the slim window grille combines strength with a sleek profile.
This design provides an expansive view, allowing for over 95% visibility and a virtually unobstructed panorama.
Unlike the fixed invisible grille, the slim grille features a swing-open mechanism, making it easy to clean your windows.
The casement design of the slim window grille eliminates the need for tracks, which are often found on aluminium sliding grilles and require additional cleaning.
Furthermore, the slim grille's design protrudes a mere 1 inch from the window frame, significantly less than the 2.5 to 3-inch protrusion of standard aluminium sliding grilles.
Not only does the slim window grille offer a cost-effective alternative to the casement invisible grille, but it also boasts less protrusion.
With its rigid and sturdy construction, the slim grille can safely have wider gaps—up to 5 inches—without compromising child safety, a stark contrast to the invisible grille which requires narrower gaps due to its flexibility.
It is available in a variety of colors to seamlessly blend with your window frames.
Slim Window Grille Design In Singapore
The slim window grille also provides versatility in design, with both horizontal, vertical and mixture options available.
Wrought Iron Window Grill In Singapore
Wrought Iron Window Grille Design In Singapore
At Ho Ho, our specialty lies in crafting custom-made wrought iron grilles. We're among the select few factories remaining in Singapore that still fabricate these intricate window grilles.
Unlike many newer and smaller factories that tend to work with mild steel window grille only due to its malleability and ease of handling, we still provide wrought iron window grille for its distinguished ornamental qualities.
Crafting wrought iron grilles requires considerable skill and experience, which we take pride in possessing. Not only do we have a range of molds, but we also employ skilled foremen capable of executing these elaborate designs.
Whether you wish to match your new wrought iron grille with an existing gate or have a particular design or drawing in mind, we're here to realize your vision.
Feel free to share your ideas with us. Click here for more details and to explore many wrought iron window grilles designs.
Cat Proof Window Grill In Singapore
Cat Friendly Grille In Singapore
In Singapore, our cat-friendly window grilles offer enhanced safety for your feline companions and can be custom-made from a variety of materials, including aluminium, mild steel, and wrought iron.
Drawing from our extensive experience serving numerous cat owners, we understand that a narrower gap of just over 2 inches is vital for preventing cats from slipping through, compared to the standard 4-inch gap typically found in regular grilles.
This reduction in gap size necessitates the use of double the number of bars, which, in turn, influences the cost, making cat-friendly grilles a more premium offering. Despite the higher price, the investment in a cat-friendly window grille pays off by safeguarding your beloved pets.
It also eliminates the need for unsightly window meshing or netting, which can detract from your home's appearance and gather dust over time.
For those where budget is not a primary concern, we highly recommend our mild steel cat-friendly slim grilles. Their slender construction offers a more refined and visually appealing solution compared to the bulkier aluminium option. Not only does it enhance the overall look of your home, but it also maintains the high safety standards required for pet protection.
HDB Window Grill Pricing In Singapore
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For most HDB flats in Singapore, each window panel is approximately 8 square feet (sq ft). This means a typical 2-panel window grill measures around 16 sq ft. HDB window grill pricing is usually calculated based on price per square foot (psf) and varies depending on the material selected.
Window Grill General Price Guide In Singapore (Per Square Foot)
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Aluminium window grill: from $8 psf
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Mild steel slim window grill: from $28 psf
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Wrought iron window grill: from $30 psf
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Cat proof window grill: from $12 psf
Estimated HDB Resale Flat Window Grill Cost by Flat Type
3-Room HDB Flat (Approx. 100 sq ft)
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Aluminium window grill: 100 × $8 = ~$800
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Mild steel slim window grill: 100 × $28 = ~$2,800
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Wrought iron window grill: 100 × $30 = ~$3,000
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Cat proof window grill: 100 × $12 = ~$1,200
4-Room HDB Flat (4S Model – Approx. 120 sq ft)
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Aluminium window grill: 120 × $8 = ~$960
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Mild steel slim window grill: 120 × $28 = ~$3,360
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Wrought iron window grill: 120 × $30 = ~$3,600
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Cat proof window grill: 120 × $12 = ~$1,440
5-Room HDB Flat (Approx. 200 sq ft)
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Aluminium window grill: 200 × $8 = ~$1,600
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Mild steel slim window grill: 200 × $28 = ~$5,600
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Wrought iron window grill: 200 × $30 = ~$6,000
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Cat proof window grill: 200 × $12 = ~$2,400
HDB BTO Flat window are usually smaller than HDB resale flat so they are cheaper.
Important Pricing Notes For HDB Window Grill
The final price of an HDB window grill depends on several factors, including:
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Actual window size
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Window grill material
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Gap between bars (especially for child-safe or cat-proof designs)
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Colour and finishing
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Design complexity
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Sliding (2-track / 3-track) or casement mechanism
How to Get a Quotation for Your HDB Window Grille
To obtain an accurate quotation for your window grille in Singapore, please follow the steps below:
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Provide your measurements or floor plan
Share your floor plan or rough window measurements to help us prepare a more accurate quotation. -
Select your preferred window grille material and design
Let us know whether you prefer aluminium, mild steel, or wrought iron window grilles, along with your preferred colour and design. If you require a cat friendly window grille, please indicate this as well. -
Send us the details
You may WhatsApp us at 9631 9288 or email hohoengineering1976@yahoo.com.sg. Our team will respond promptly with a quotation based on your requirements. -
Visit our showroom (optional)
Alternatively, you are welcome to visit our showroom with your measurements to view actual window grille samples and discuss your options with our friendly and knowledgeable sales consultants.
Why Choose Ho Ho as Your HDB Window Grille Supplier?
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HDB Licensed and BCA Registered Company: Choosing Ho Ho means partnering with a trusted, licensed HDB contractor who adheres strictly to all regulatory standards, ensuring the safety and quality of your bathroom door installation. Our commitment to compliance guarantees peace of mind and satisfaction.
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Established since 1976: With a foundation dating back to 1976, Ho Ho boasts over 50 years of expertise in a wide range of window grill manufacturing and installation. Our team consists of highly skilled installers and knowledgeable, friendly sales staff, ensuring a seamless experience from selection to installation. Trust in our longstanding tradition of quality and service for all your bathroom door needs.
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Showroom Experience: For those who prefer to explore window grille options in person, our showroom is open for visits. Here, you can see our products firsthand and receive expert advice from our friendly sales team, helping you make an informed decision on the best window grille type for your bathroom.
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Customized Solutions: We stand out by offering a vast selection of window grille mechanisms and designs, tailored to meet both your functional needs and aesthetic preferences. Our experts are dedicated to recommending the perfect window grille that aligns with your specific requirements.
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Competitive Pricing and Quality: As direct manufacturers, we provide not only competitive prices but also superior quality materials designed to last for years. Should you ever need spare parts or repairs, Ho Ho is here to ensure your window grille remains in top condition, offering unparalleled convenience and reliability.
HDB Window Grill Lead Time in Singapore
Estimated Timeline for HDB Window Grille Replacement: After taking precise measurements of your windows grill, the preparation of your custom-made window grilles typically requires about 10 working days when it's not a holiday season. Our window grills are crafted uniquely for each client rather than being pre-made. They undergo a powder-coating process rather than spray painting, which contributes to the extended preparation time. Additionally, we cater to a broad clientele, including homeowners, contractors, and interior designers, which is factored into our timeline.
Installation Timeframe: The installation process for your HDB window grill is designed to be efficient, usually taking less than an hour for each set. Our skilled team ensures the installation is conducted quickly and efficiently to limit any inconvenience to your schedule. Floor protection will be laid out, and a basic clean-up is performed post-installation.
Guidelines for Post-Installation Maintenance: We advise wiping the window grilles down 2 to 3 hours post-installation and to avoid touching the silicone before it dries. This waiting period allows the silicone used in the installation to cure and harden properly, securing the grilles in place.
Cleaning and Maintenance Tips for HDB Window Grill in Singapore
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Warm Soapy Solution: A gentle yet efficient way to clean is using warm water mixed with a mild dish soap, such as Mama Lemon. With a soft cloth, clean the window grille, giving extra attention to the locks and tracks, then rinse with plain water.
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Avoid Strong Chemicals: Steer clear of potent chemicals like bleach and abrasive cleaning agents, which can degrade the window grill's coating and lead to discoloration. Stick to milder cleaners—if it's harmful to your skin, it's likely too harsh for the grille.
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Use Anti-Bacterial Wet Wipes: For convenience and effectiveness, anti-bacterial wet wipes are excellent for removing dirt and germs from your window grille quickly.
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Dry Thoroughly: After washing, make sure to dry the window grill completely to prevent water stains and rust formation. Wipe away any leftover moisture with a dry, soft towel, and allow the window grill to air dry by keeping the window open.
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Regular Cleaning Routine: Consistent cleaning is crucial to ensure your window grille remains sanitary and functional. Clean it at least every six months, although the exact frequency may vary depending on usage.
Adhering to these simple maintenance practices will make preserving your window grill straightforward, enhancing the hygiene of your living space and ensuring the longevity and optimal appearance of the grilles.
Ready To Purchase Your Aluminium Window Grille In Singapore
Contact Ho Ho Today!
Showroom Address
194 Pandan Loop #07-07
Singapore 128383 Pantech Business Hub
Mon to Fri 10 to 4.30 pm
Sat 10 to 2pm
Sun & PH Closed
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Install Window Grilles Together with New Glass Windows
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