The price of double glazed windows in Sydney comes down to a few main things: the size of each window, the frame and opening style, the glass you choose and how straightforward the installation is. Two quotes for the same number of windows can look very different once those details are counted. At Newage, double glazed windows start from around $750 per window supplied and installed, and your written quote shows exactly what moves the price above that starting point.
How much does window size change the price?
Size is usually the biggest single factor, because a larger window needs more glass, more aluminium and more care to handle and install. A small bathroom or laundry window will sit close to the starting price, while a wide living room window or a tall feature window costs more.
Double glazed units are heavier than single glazed panes because each unit holds two sheets of glass with a sealed gap between them. That extra weight means larger windows need stronger frame sections and sometimes two installers to lift safely. When you count the windows in your home, it helps to note which ones are large, which are standard and which are small, because the mix matters far more than the total number.
Odd shapes and sizes also play a part. Because every Newage window is made to measure in our own workshop at Smeaton Grange, an unusual opening is not a problem, but it does take more cutting and fitting time than a common size.
Does the window style affect the cost of double glazing?
Yes. A fixed window with no moving parts is generally the simplest to make, while opening styles need hardware, seals and more frame work, so they cost a little more.
Sliding windows are a popular, practical choice for most rooms. Awning windows open outward from the bottom on a winder, which suits wet weather ventilation and areas above benches, and they need extra hardware. Double hung windows have two sashes that slide up and down in the frame, which gives a traditional look and flexible airflow. They do not tilt in, so cleaning the outside of the glass on upper floors needs some planning.
Combining styles in one frame, such as a fixed centre panel with awning sashes either side, adds joins and hardware. It can still be good value because one larger combined unit is often simpler to install than several separate windows.
Which glass options push the price up?
Standard double glazing is the base option, and each upgrade to the glass inside the unit adds to the cost. The main upgrades are low E coatings, toughened or laminated glass for safety, thicker glass for noise and obscure glass for privacy.
Low E glass has a thin coating that helps control heat moving through the window, which is useful on west facing rooms that take the afternoon sun. Laminated glass holds together if broken and also helps with noise, which is why homeowners near busy roads often ask for it. Toughened glass is required in some locations, such as low windows and areas near doors, so part of your glass choice is set by safety rules rather than preference. In bathrooms, obscure glass gives privacy without needing blinds.
If your home is going through a renovation or new build in NSW, your BASIX commitments may also specify the glazing performance you need. You can read about BASIX on the NSW Planning Portal, and we can quote to match the glazing listed on your certificate.
| Price factor | Tends to keep cost lower | Tends to add cost |
|---|---|---|
| Window size | Small and standard sizes | Wide or tall feature windows |
| Opening style | Fixed or sliding | Awning, double hung or combined units |
| Glass | Standard clear double glazing | Low E, laminated, toughened or obscure glass |
| Frame colour | Standard powder coat colours | Special order colours |
| Access | Ground floor, clear access | Upper floors or tight access |
| Existing openings | Opening stays the same size | Opening needs to be changed |
Does installation and access make a difference?
It does. A ground floor window with clear access is quicker to replace than a second storey window above a roof, a steep garden or a narrow side path.
Upper floor work can need extra people and equipment to remove the old window and lift the new double glazed unit into place safely. The type of wall also matters. Brick veneer, full brick and lightweight cladding each need slightly different removal and fixing methods, and older homes sometimes have openings that are out of square and need more packing and finishing.
If you want an opening made larger or smaller, that is building work in addition to the window itself, and it changes the price. Keeping the same opening size is the most straightforward path. Because Newage installs with our own team rather than handing the job to subcontractors, the person who measured your home and the people who fit the windows work from the same plan.
Can you save by keeping your old frames?
Newage does not reglaze existing frames or retrofit double glazing into old windows. We supply and install complete new double glazed windows, which gives you new seals, new hardware and frames designed to carry the weight of the thicker glass.
Many older aluminium and timber frames were built for a single pane of glass, so they often cannot hold a double glazed unit properly. Replacing the whole window means the frame, glass and seals all work together, which is what gives you the comfort and noise benefits you are paying for. It also removes worn rollers, tired locks and draughty seals in one job, rather than chasing repairs later.
If budget is tight, a sensible approach is to replace the windows in the rooms that matter most first, such as bedrooms facing a road or a living area that heats up in summer, and do the rest later.
How do you compare double glazing quotes fairly?
Compare quotes line by line rather than on the total alone, because two prices can cover quite different work. Before you choose, check these points:
- Confirm every window is listed with its size, opening style and position in the home.
- Check the glass type for each window, including any low E, laminated, toughened or obscure glass.
- Make sure removal of the old windows, installation and clean up are included.
- Ask whether the windows are made to measure for your openings or adapted from stock sizes.
- Check who will install the windows and whether the quote is a fixed written price.
A lower looking quote that leaves out glass upgrades or installation can end up costing more once the extras are added. A clear written quote avoids surprises on the day.
Get a free measure and quote
Newage has been making and installing aluminium windows and doors since 2009, with more than 2,500 projects completed and a 4.7 star rating on Google. You can learn more about our team and workshop at Unit 2/16 Blackmore Rd, Smeaton Grange NSW 2567.
The quickest way to know what your windows will cost is a free on site measure. We check each opening, talk through glass and style options, and give you a written quote for supplied and installed double glazed windows in Sydney and surrounding regions. If you are also thinking about your patio or balcony, ask us about double glazed doors at the same visit.
Book your free measure and quote online, or call 0408 585 846. We are open Monday to Friday 8am to 5pm and Saturday 8am to 1pm.
