HDB Toilet Window Replacement
(Top Hung & Exhaust Fan Options)
Replacing your toilet window is often necessary when the existing window is jammed, leaking, or no longer compliant with current safety requirements. A proper toilet window replacement improves ventilation, moisture control, and safety, helping to prevent mould growth while allowing humid air to be discharged efficiently. For most HDB toilet, top hung windows and exhaust fan–ready window panels are the most practical options, as they provide airflow without compromising privacy.
As an HDB-licensed (HB-02-0677-D) and BCA-registered window contractor, we guarantee full compliance with HDB regulations, ensuring a smooth and hassle-free installation process.
With over 50 years of experience since 1976, Ho Ho has helped thousands of homeowners improve their home’s comfort, safety, and long-term value with durable, well-crafted toilet windows offered at direct factory prices.
Types Of Toilet Window We Offer In Singapore
We offer a range of HDB-approved toilet windows in Singapore, designed to improve ventilation, privacy, and long-term durability.
Depending on your bathroom layout and airflow needs, you can choose from modern top hung toilet windows, practical adjustable louvre toilet windows, or top hung toilet windows with exhaust fan for enhanced moisture control.
All options are professionally supplied and installed in full compliance with HDB requirements.
A toilet window with exhaust fan is an ideal solution for bathrooms in Singapore’s hot and humid climate, where moisture tends to build up quickly after showers. High humidity can lead to unpleasant odours, and eventually mould growth on walls, ceilings, and silicon around bathroom fittings.
By combining a top hung toilet window with an exhaust fan, humid air is removed more efficiently. The toilet window allows natural airflow when opened, while the exhaust fan continuously extracts moisture and stale air—even when the window is closed—helping to keep your toilet dry, fresh, and hygienic.
This setup is especially recommended for internal toilets, windowless bathrooms, or homes with limited cross-ventilation.
We commonly recommend KDK exhaust fans due to their quiet operation, reliability, and long service life. Installation is fully HDB-compliant and can be done together with the toilet window replacement for a clean and seamless finish.
Comparison of KDK Ventilation Fan Models Used For Toilet Window In Singaproe
All three KDK models are suitable for toilet window installation. The right choice depends mainly on toilet size, usage frequency, and ventilation needs.
-
Choose KDK 15WUD if you want a simple, cost-effective exhaust fan for normal toilet ventilation.
-
Choose KDK 15WHPCT if your toilet often feels damp — the humidity sensor automatically activates the fan to reduce moisture and prevent mould.
-
Choose KDK 20WUD if you need stronger ventilation, especially for larger bathrooms or toilets with poor natural airflow.
All models are suitable for toilet window installation, operate quietly, and come with a 1-year warranty.
Top Hung Toilet Window
A top hung window opens outward from the top, allowing air to flow in while preventing rain from entering. It offers a sleek, modern look and better sealing compared to louvre windows.
Best for homeowners who want:
-
A cleaner and more modern toilet window design
-
Better protection against rain and wind
-
Easier cleaning with fewer joints
-
Improved durability and tighter sealing
Adjustable Louvre Toilet Window
An adjustable louvre window uses angled glass panels that can be tilted to control airflow. It is a practical and cost-effective option commonly found in older HDB flats.
Best for homeowners who want:
-
Adjustable airflow control
-
Continuous ventilation even when partially closed
Which Should You Choose?
-
Choose a top hung toilet window if you prefer a modern look, better rain protection, and easier maintenance.
-
Choose an adjustable louvre toilet window if you want maximum airflow control at a lower cost.
For toilets with high humidity, pairing either option with a toilet exhaust fan is strongly recommended to improve ventilation and reduce moisture buildup.
All HDB toilet window replacement works require an HDB permit. As an HDB-licensed contractor, we will apply for the permit on the homeowner’s behalf, ensuring the installation is fully compliant with HDB regulations.
If you plan to install a toilet exhaust fan, please let us know in advance. The HDB permit is required for exhaust fan installation, and we will cut the opening on the window panel to fit the fan neatly. Additional charges apply for the cutting of the glass panel and exhaust fan installation.
Glass Options
-
Wire mesh glass – standard, frosted for privacy and included by default
-
Frosted laminated glass – available at an additional cost for enhanced aesthetics and better privacy
Our team will advise on the most suitable window and glass option based on your toilet layout and ventilation needs.
The best time to change your HDB toilet window is when it no longer provides proper ventilation, safety, or privacy. In Singapore’s humid climate, an aging toilet window can also contribute to water seepage and long-term maintenance issues.
You should consider replacing your toilet window if:
-
The window frame is loose or difficult to open and close
-
Glass panels are cracked, chipped, or damaged
-
Water seeps in during heavy rain
-
The window no longer meets current HDB safety requirements
-
You are renovating your toilet and want a more modern window design
Change Toilet Window During Toilet Renovation Works
The most ideal time to replace your HDB toilet window is during a toilet renovation. This allows the new window to be aligned neatly with new wall tiles and avoids unnecessary hacking or rework later.
Change Toilet Window When Adding an Exhaust Fan
If you plan to install a toilet exhaust fan, it is best to change the window at the same time. The window panel can be prepared and cut properly, and the correct HDB permit can be applied in one go, ensuring a cleaner and more compliant installation.
Changing Toilet Window For Older HDB Flats
If you are not changing your toilet tiles, we generally do not recommend removing the existing toilet window frame, as this may cause tiles to crack. Instead, we recommend installing a new window frame within the existing frame.
While this results in two frames, it helps avoid tile damage, which can look worse and be costly to repair. For the cleanest and best overall result, the best time to change your toilet window is during a full toilet renovation.
HDB toilet window pricing depends on the window size, number of panels, and glass type selected. Pricing is not calculated by square feet, but based on standard toilet window panel sets, which is the common HDB practice.
Glass Type
-
Wire mesh glass – included by default
-
Frosted laminated glass – additional $80 per panel
Standard HDB Toilet Window Pricing
HDB toilet windows typically come in 1-panel or 2-panel configurations:
-
1 panel + 1 panel – $390
-
1 panel + 2 panels – $490
-
2 panels + 2 panels – $590
Exhaust Fan Installation On HDB Toilet Window
-
Exhaust fan cutting: additional $100
-
Exhaust fan price not included
Homeowners are encouraged to purchase the exhaust fan themselves for better pricing. We will prepare the window panel and install the fan neatly during window replacement.
Toilet Window Replacement Timing & Pricing Note
Most homeowners replace their toilet window together with other glass windows in the home. If you are replacing only the toilet window, pricing will be $100 higher due to min sum.
HDB toilet windows follow standard size ranges, which is why pricing is based on panel sets rather than square footage.
Standard HDB Toilet Window Sizes
-
1 panel: up to 2 ft × 2 ft
(approximately 60 cm × 60 cm) -
2 panels: up to 4 ft (width) × 2 ft (height)
(approximately 120 cm × 60 cm)
Private Properties Toilet Window Sizes
For private properties, toilet window sizes may be larger or customised. As a result, pricing will be higher and quoted based on actual measurements and specifications.
Many homeowners choose to replace their toilet window together with other glass windows in the home for better coordination, cost efficiency, and a more seamless installation process.
At Ho Ho, we specialise in supplying and installing glass windows in Singapore at direct factory prices. Our glass window solutions are designed to suit different home layouts, ventilation needs, and lifestyle requirements.
Established since 1976, we are one of the leading glass window suppliers in Singapore, trusted by thousands of homeowners over the years.
Choose from a wide range of glass window mechanisms, including:
As an HDB-licensed (HB-02-0677D) and BCA-registered contractor, we ensure that every glass window installation complies fully with HDB regulations, giving homeowners a smooth and hassle-free experience.
With over 50 years of experience since 1976, Ho Ho has helped thousands of homeowners enhance their homes with durable, functional, and beautifully crafted glass windows that improve ventilation, security, and overall property value in Singapore
Showroom Address
194 Pandan Loop #07-07
Singapore 128383 Pantech Business Hub
Mon to Fri 10 to 5pm
Sat 10 to 2pm
Sun & PH Closed