Double Glazed Windows


Secondary Double Glazing Windows Sydney

If you are here, then you’re likely looking for double glazed window products & solutions & if you’re in Sydney, we can assist you!

Why spend more money on new double-glazed windows when retrofitting secondary glazing is often up to 30% cheaper, offers better soundproofing & thermal insulation (to save heating and cooling expenses), and entirely eliminates drafts if you already have windows that need to be glazed?

Modern Secondary Glazing

Our retrofit secondary glazing is available in a variety of finishes and colours to provide a complete connection with your current decor. And while delivering high performance window glazing, our ultra-thin frames are undetectable. (See the page on Appearance)

We can retrofit double glazing to the following styles of existing windows:

Vertical or horizontal sliding windows

Leadlight windows

Bay windows

Colonial windows

Sash windows or double hung windows

Steel windows. Also called Crittle Frame windows.

Stained glass windows

Windows styles we cannot double glaze include:

Arched windows (with arched head)

Round windows

Raked windows or angled windows (ie not square)

Double Glazed Windows Enquiries

To schedule a free, on-site, no-obligation consultation, measure, and quotation for retrofitting double glazing to existing windows throughout Sydney for inexpensive and highly effective soundproofing & insulation for existing glass windows & doors, please contact us at 1300 275 353 or use our Contact form to send us a message.

Double glazing casement, sash & vertical sliding windows with retrofitted Vertical Slider window for double glazing

Vertical Sliding Windows

Our double glazed vertical sliding window units are all doubly sealed with twin Polypropylene Weatherpile.
The vertical sliders are operated via the full-length handles located at the bottom of each window panel.
The secondary double glazed window panels can be slid to any position as required and are held in position by the spring balances on the side of the outer frame.

Read More

Horizontal Sliding Windows

Our retrofitted secondary glazing for double glazed horizontal sliding windows is our most popular style of retrofitted double glazed windows in Sydney.
The horizontal slide windows are opened via a handle running the full length of the window panel and slide left or right as required. They make it easy to access your existing windows when you need them while providing efficient, cost-effective sound and temperature insulation.

Read More

Double Glazed Horizontal Slider Windows
Double glazed hinged windows

Hinged Unit / Panel Windows

Retrofitted secondary double glazed hinged window units can be fitted to almost any shape of the window.
They provide effective thermal insulation and sound reduction simply and inexpensively.
Our secondary glazing hinged window units are kept closed by an ingenious semi-automatic catch, unsurpassed for its effective simplicity.

Read More

Lift-out Windows

Our lift out windows is often installed when secondary or double glazing is required for an existing window that is rarely opened. This double glazing lift out window features a user-friendly handle at the bottom for easy access and removal of the secondary double glazed window panel.


Read More

Double glazing lift out windows
Secondary double glazing fixed windows

Fixed Panel Windows

Secondary glazed windows with fixed panels cannot be opened. Fixed panel secondary double glazing windows are installed to let light in while decreasing noise, preserving warmth, and reducing draught.

These custom-built secondary double-glazed window panels may be created into any form needed, and they offer efficient soundproofing and thermal insulation at a low cost.


Read More