Aluminium Secondary Glazing / Secondary Double Glazing

Secondary Glazing involves adding an extra slim-line window in addition to your existing windows. Secondary glazing is designed to keep the heat in and the noise out. You could also save around 10% on your heating bills. Our Secondary Glazing is made from strong lightweight aluminium so that the frames can be made very slim and discreet.

Secondary Glazing is perfect for use in Listed Buildings and conservation areas. Adding secondary glazing is a cost effective and reversible change that is recommended by English Heritage and the Listed Property Owners Club. The Energy Saving Trust states that it is 'ideal solution if you are unable to fit double glazing'.

Secondary glazing should NOT easily be seen.
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Secondary Glazing Systems

Secondary glazing involves adding an extra slim-line window in addition to your existing windows. Our secondary is made from slim-line, durable aluminium and we have been supplying this trusted and proven product since 1985. It is virtually maintenance free and will give many years of trouble free service. Secondary glazing comes in many styles and colours to match your existing windows to blend in with your property. Curtains and blinds remain unaffected most of the time. Perfect for listed buildings and rented accommodation where altering or replacing the prime window is not possible.

Our Secondary Glazing comes in either White, Silver or Brown finish and has 4mm Float Glass as standard.

Optional Features

  • White, Silver or Brown Standard Colours.
  • Much of our Secondary Glazing can be Curved or arched.
  • Any RAL Colour available at an extra cost and an extended lead time.
  • Float, Obscure, Toughened safety glass, Laminated, Heat insulating K glass or Acoustic glass.
  • Selection of trims to hide fixing holes - Luxury Subframe system only.
  • Black, White or Grey Gaskets.

Secondary Systems - Frame Options

System Description Available Styles

Economy Odd Leg System
This slim-line secondary glazing system is at a lower cost than our subframe system. It has no wooden subframe for fixing through, instead it uses an aluminium odd leg or flange around the four sides of the frame. For face fixing directly to the existing window.

  • Two Track Horizontal Sliders
  • Non-Balance Vertical Sliders (Non-Tilt Back)
  • Balance Vertical Sliders (Non-Tilt Back)
  • Butt Hinged Units
  • Friction Hinged Units
  • Lift Out Units (And Combination Units)
  • Fixed Units (No Odd Leg / Flange)

Luxury Subframe System
Just a slim our economy system the luxury subframe system has an MDF or hardwood subframe that wraps the aluminium frame. The wooden subframe is easy to mount, comes with trims to cover your fixing screws and leaves you with a clean, finished look that is ideal for installations of secondary glazing in residential properties. Can be fixed into the window reveal or face fixed to the existing window.

  • Two Track Horizontal Sliders
  • Three Track Horizontal Sliders
  • Non-Balance Vertical Sliders (Non-Tilt Back)
  • Balance Vertical Sliders (Non-Tilt Back)
  • Tilt Back Balance Vertical Sliders
  • Butt Hinged Units
  • Friction Hinged Units
  • Parallel Opening Hinged Units (PIPT)
  • Lift Out Units (And Combination Units)

Commercial Heavy Duty System
The wider heavy duty frame can achieve larger maximum widths and heights, and allows for double glazed units for maximum sound and heat insulation. Has a direct fix frame that requires to be fitted into the window reveal.

  • Two Track Horizontal Sliders
  • Balance Vertical Sliders (Non-Tilt Back)