Secondary Double Glazing Windows

If you are here, then you’re likely looking for double glazed window products & solutions.

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

  • Vertical or horizontal sliding windows
  • Leadlight windows
  • Bay windows
  • Colonial windows
  • Sash windows or double hung windows
  • Steel windows (Crittle Frames) … our system was designed with these windows in mind!
  • 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)

If you’re in doubt, why not contact us on 1300 127 173 or use our Contact form to send us a message or arrange a free, on-site, no obligation consultation & quotation for retrofitting double glazing to existing windows for low cost & highly effective effective soundproofing & insulation.

Double glazing vertical sliding windows with retrofitted Vertical Slider window

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 on 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 in the side of the outer frame.

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Horizontal Sliding Windows

Our retrofitted secondary glazing for double glazed horizontal sliding windows are our most popular style of retrofitted double glazed windows in Melbourne.

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.

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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 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 it’s effective simplicity.

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Lift-out Windows

Our lift out windows are 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.


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Double glazing lift out windows
Secondary double glazing fixed windows

Fixed Panel Windows

Fixed panel secondary glazed windows cannot be opened. The purpose of fitting fixed panel secondary double glazing windows is to allow light to enter while reducing sound, maintaining temperature and reducing drafts.

These tailor made secondary double glazed window panels can be manufactured to any shape desired and they provide effective thermal insulation and sound reduction – simply and inexpensively.


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