Double Glazed Windows in Singapore: Are They Worth Installing?

 

Double Glazed Windows in Singapore: Are They Worth Installing?

If you live near a busy road, an MRT line or a construction site, outside noise can affect your comfort at home. Heat from the sun can also make rooms feel warm, especially during the afternoon.

One option worth considering is double glazed windows. These windows use two panes of glass with a sealed space between them. They can help reduce outside noise and improve insulation when the complete window system is well designed.

But are double glazed windows worth installing in Singapore? The answer depends on your home, your needs and the type of window you choose.

What Are Double Glazed Windows?

Double glazed windows have two panes of glass separated by a sealed space. This space creates an extra layer between the indoor and outdoor environment.

Compared with a single pane of glass, this design can help reduce heat transfer and may improve noise reduction. The results depend on the glass used, the gap between the panes, the frame and the quality of the seals.

Double glazed windows are available in different styles, including casement and sliding windows. Choosing the right design is important because the way a window closes can affect its overall performance.

1. Can Double Glazed Windows Reduce Outside Noise?

Noise reduction is one reason homeowners consider double glazed windows in Singapore.

Outside sounds can enter through the glass, gaps around the frame and other openings. Two panes of glass can help reduce some sound, but the result depends on how the window is built.

For example, a home facing a busy road may need a different window setup from one where the main concern is voices from a common corridor.

Does Double Glazing Block All Noise?

No. Double glazed windows cannot block all outside noise.

Their performance depends on several factors, including the thickness of each glass pane, the space between the panes and the quality of the frame and seals. Glass panes with different thicknesses may also help reduce a wider range of sound frequencies.

The way the window closes is important too. If there are gaps around the frame, sound may still enter even when double glazing is used.

If noise reduction is your main concern, ask for test results for the complete window system rather than looking at the number of glass panes alone.

2. Do Double Glazed Windows Help Keep Rooms Cool?

Singapore has a hot and humid climate, so heat entering through windows can affect indoor comfort.

Double glazed windows add a layer of glass and a sealed space between the panes. Depending on the glass and window design, this can help reduce heat transfer from outside.

However, not all double glazed windows offer the same level of insulation. The type of glass, window frame and direction the window faces all make a difference.

What About Air-Conditioning Costs?

A window that reduces heat entering a room may help the room stay more comfortable. In some cases, this may also reduce the need for air-conditioning.

However, the actual savings depend on factors such as the room’s size, sun exposure, air-conditioning use and the rest of the building.

Double glazing should therefore be considered as part of a wider plan to improve indoor comfort, rather than a guarantee of lower electricity bills.

3. Which Window Frames Can Be Used With Double Glazing?

The frame is an important part of any double glazed window. It holds the glass in place and helps seal the opening against outside air and noise.

Different frame materials offer different benefits, so it is worth comparing them before making a decision.

uPVC Window Frames

uPVC is a rigid material commonly used for residential window frames. It does not rust and is easy to clean, making it suitable for Singapore’s humid climate when properly designed and installed.

Many uPVC frames have internal chambers that can help improve insulation. When paired with suitable glass and good seals, they may be a useful option for homeowners who want to reduce heat and outside noise.

Aluminium Window Frames

Aluminium is another common choice for window frames. It is strong and can be used for many window designs.

Its insulation performance depends on the frame design. Some systems use special features to reduce heat transfer through the frame.

When comparing uPVC and aluminium windows, consider the complete system, including the glass, seals, opening style and installation quality.

You can explore Fortuna Window’s Material Profile page for more information about window frame options.

4. Are Casement or Sliding Double Glazed Windows Better?

Double glazed windows can use different opening styles. Two common options are casement and sliding windows.

Casement Windows

Casement windows open inwards or outwards using hinges. When closed, the panels can press against the frame seals to create a tight fit.

This closing method may help reduce gaps around the window. However, enough space must be available for the panels to open.

Sliding Windows

Sliding windows move horizontally along tracks and do not need extra space for the panels to swing open. This makes them practical for many homes.

Their noise reduction performance depends on the frame design, seals and installation. Some sliding systems may not seal in the same way as casement windows.

Neither style is automatically the best choice for every home. If sound insulation is important, compare the tested performance of the complete window systems before deciding.

5. What Are the Costs of Installing Double Glazed Windows in Singapore?

The cost of double glazed windows varies from one project to another. The final price depends on the size and number of windows, the glass specification, the frame material and the type of opening.

Installation conditions can also affect the cost. Replacing existing windows may involve extra work, depending on the current frames and the condition of the openings.

What Affects the Price?

Before asking for a quotation, consider these points:

• Window size: Larger windows usually need more materials.
• Glass type: Different glass thicknesses and specifications can affect the price.
• Frame material: uPVC and aluminium systems may have different costs.
• Opening style: Casement and sliding designs have different parts and fitting needs.
• Installation work: Removing old windows and preparing the openings may add to the total cost.
• Special requirements: Your home may need a specific design to meet building or management rules.

When comparing quotations, check what is included. Look at the glass, frame, seals, installation work and warranty rather than comparing the total price alone.

6. What Should You Check Before Installing Double Glazed Windows?

Before choosing a new window system, make sure it suits your home and your main concerns.

Here are some useful questions to ask:

• What type and thickness of glass will be used?
• How well does the complete window system reduce outside noise?
• What frame material and sealing system are included?
• Is the window suitable for the space available?
• Does the installation meet the relevant HDB, building management and safety requirements?
• What does the warranty cover?
• How should the windows be cleaned and maintained?

It is also useful to explain the noise you experience. Traffic, construction work and voices from a corridor may require different solutions.

If your home is noisy even when the windows are closed, ask the installer to check for gaps and other possible sources of sound. Upgrading the glass alone may not solve the problem.

7. Are Double Glazed Windows Suitable for HDB Flats and Condominiums?

Double glazed windows may be suitable for different types of homes, but the installation requirements can vary.

HDB Flats

If you live in an HDB flat, check the applicable window replacement rules and approval requirements before starting work. The proposed design must meet the relevant safety requirements.

Condominiums

Condominium owners should check with the management office before replacing windows. There may be rules on the building’s exterior appearance, window design and installation work.

Landed Properties

Landed homeowners may have more flexibility in choosing window styles, but they still need to consider safety, weather exposure, ventilation and any applicable building requirements.

Before proceeding, confirm that the selected window system and installation method are suitable for your property.

Are Double Glazed Windows Worth Installing?

Double glazed windows are worth considering if you want to improve indoor comfort or reduce outside noise. They can help with insulation, but their performance depends on the glass, frame, seals and installation.

For homeowners in Singapore, the best option is not always the one with the most glass layers. It is the system that suits the home’s layout, noise concerns and budget.

If you are mainly concerned about outside noise, look at the complete window system and ask about its tested performance. If heat is the main issue, compare the available glass and frame options as well.

Fortuna Window offers window and door systems for residential properties. To explore options for reducing outside noise, visit the Soundproofing Solutions and Material Profile pages.

If you are unsure whether double glazed windows are suitable for your home, discuss your requirements with Fortuna Window before deciding on an upgrade.