Secondary Double Glazed Window Types

Below you will find the major styles of secondary glazed windows we supply. Because we retrofit double glazing to existing windows, we can double glaze

  • 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 Window (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 no obligation consultation.

Double glazing with retrofitted Vertical Slider window

Vertical Sliding Windows

Vertical Slide units are all doubly sealed with twin Polypropylene Weatherpile.

Vertical sliders are operated via the full-length handles located on the bottom of each panel.

The panels can be slid to any position as required and held in position by the spring balances in the side of the outer frame.

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Horizontal Sliding Windows

Retrofit Double Glazing for Horizontal Sliding Windows

Horizontal Slide units are our most popular style of retrofit double glazing services in Melbourne.

Horizontal sliders are opened via a handle running the full length of the panel and slide left or right as required. They make it easy to access your 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

Hinged units can be fitted to almost any shape of window.

They provide effective thermal insulation and sound reduction simply and inexpensively.

Hinged Units are retained closed by an ingenious semi-automatic catch, unsurpassed for effective simplicity.

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Lift out windows are often installed when a secondary glaze window is required on an existing window that is rarely opened. This lift out is designed features a handle at the bottom for easy access and removal of the panel.


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Double glazing lift out windows
Secondary double glazing fixed windows

Fixed Panel

Fixed Secondary windows cannot be opened; the function of fixed glazing is to allowing light to enter while reducing sound, maintaining temperature and reducing drafts. These tailor made windows can be manufactured to any shape desired and they provide effective thermal insulation and sound reduction – simply and inexpensively.


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