Aluminium Secondary Glazing

Secondary glazing involves adding an extra slim-line window in addition to your existing windows. It is an effective and cost efficient method of insulating and sound proofing your windows. If you’re worried about ever increasing energy costs, secondary glazing could save you around 10% on your heating bills. The Energy Saving Trust states that it is an ‘ideal solution if you are unable to fit double glazing’.

Secondary glazing is perfect for use in Listed Buildings and conservation areas. Made from strong light weight aluminium, it can be made to be very slim and discreet. Considered a reversible change, secondary glazing is recommended by English Heritage and the Listed Property Owners Club.

Secondary glazing with solid oak trims

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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 Face Fix Secondary Glazing System

Economy Odd Leg System
This slim-line secondary glazing system that is designed to be face fixed directly onto an existing window. It has no wooden subframe for fixing through, instead it uses an aluminium odd leg or flange around the outside edge of the frame. The aluminium flange come predrilled and is easy to fit. This is the most cost effective of our secondary glazing systems. This small saving makes a big difference, saving you time and money when fitting a lot units. Read More...
  • 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 Face Fix / Reveal Fix Secondary Glazing System

Luxury Subframe System
Just as slim as our economy system our 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 the subframe and fixing screws. This provides you with a clean, even and aesthetically pleasing finish that is ideal for installations in residential properties. This secondary glazing system can be face fixed to the existing window or fixed into the window reveal set back from the existing windows. Read More...
  • 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 (PIP™)
  • Lift Out Units (And Combination Units)
Comercial Heavy Duty Direct Fix / Reveal Fix Secondary Glazing System

Heavy Duty System
Our heavy duty system is bigger and stronger than the subframe or odd leg systems. It can achieve larger maximum widths and heights, and can take double glazed sealed units for extreme circumstances - providing maximum sound and heat insulation. It has a direct fix outerframe that fixed into the window reveal. It is the most costly option and is probably the most difficult system to fit. Read More...
  • Two Track Horizontal Sliders
  • Balance Vertical Sliders (Non-Tilt Back)

Call Us Today On 01268 681612 or Email sales@duration.co.uk

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Contact Information

  • T: 01268 681612 (Office)
  • T: 01268 695100 (Showrooms)

  • F: 01268 510058 (office)
  • E: sales@duration.co.uk
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