Double Glazing Existing Timber Windows

Double glazing existing timber windows is an ideal way to improve the energy efficiency of your home. In Sydney, where summers can be hot and humid, double glazing timber windows helps reduce heat transfer to the interior of your home. It also reduces external noise, making your home more peaceful and comfortable.

* Note: While double glazing is popular, we don’t normally recommend this for timber heritage windows – the reason it may only last 10-15 years, it can potentially leak, it is expensive and you have throw out the old window frames so it’s not as sustainable as other options. We advise under no circumstances to not do double glazing – we always do VIG or ComfortHush – Contact our team to get our recommendation for your situation. *

If you have existing windows in your home, there are several options available to you when it comes to double-glazing them. Timber windows, in particular, can be retrofitted with a secondary layer of glass, which is both energy-efficient and aesthetically pleasing.

Inner West Window Specialists can provide you with a wide range of double-glazing solutions for your existing timber windows. Every double-glazed unit is custom-built to the exact specifications of your window, ensuring a perfect fit and superior performance.

Double Glazing Existing Windows: How It Works

Double glazing works by creating an air gap between two panes of glass. This creates a layer of insulation which helps to keep the heat in or out of your home. The air gap also reduces noise from outside, making it easier to enjoy peace and quiet in your home.

Here’s what double-glazing existing timber windows involves:

  • Removing the existing window frames and glass

  • Installing a special double-glazing system with two separate frames

  • Fitting the new frames with a layer of energy-efficient double-glazing glass

  • Sealing everything to ensure an airtight fit and reduce heat transfer

At Inner West Window Specialists, we use only the highest-quality materials for our double-glazing installations. This means you can be sure that your existing timber windows will be energy-efficient and safe for many years to come.

Inner West Window Specialists’ Double Glazing Service

Our experienced team can advise you on the best solution to retrofit double-glazing, taking into account your current window frames and the type of glass you wish to use.

Here’s what our service includes:

  • Expert advice on the best option for your existing windows

  • On-site measurements and installation of double- or secondary glazing systems

  • Quality assurance, with all work backed by a five-year guarantee

  • Cost-effective double-glazing windows to suit your budget

Our experienced team knows how to provide a tailored solution that meets your individual needs and preferences. We can provide you with a range of different glass types, such as low-e. We can also install double-glazing to suit older timber frames and glass panels as well as several types of windows, such as double-hung windows.

So no matter what type of timber windows you have in your home, contact Inner West Window Specialists today to help you get those double-glazed windows perfect for your home. Each double-glazed window is custom-made to fit your existing frames, ensuring a perfect seal and providing the best possible insulation

double glazing existing timber windows sydney

Double Glaze Existing Windows Today

Inner West Window Specialists are the experts in double-glazing existing timber windows. Our experienced team can provide cost-effective double-glazed units that will improve your home’s energy efficiency and comfort.

In addition to our double-glazing service, we also offer a variety of other timber window restoration and upgrade services:

Repairing damage caused by rot or insects

If you have noticed any signs of wood rot or insect infestation, we can help you repair the affected areas and restore your windows to their original condition.


Windows that are not properly weatherproofed can cause air leakage, which can lead to an increase in your energy bills. We will ensure that your windows are properly weatherproofed to help keep your home energy efficient.


Draught is a common problem in timber windows, but it is one that can be easily fixed. We will help you draught-proof your windows to ensure that they are airtight and secure.

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Contact us today to get a free quote