Improve weather & sound proofing

What is Secondary Glazing & Where Is It Used?

Secondary glazing involves adding an extra slim-line window in addition to your existing windows. It is designed to keep the heat in and the noise out. You could also save around 10% on household bills by fitting our secondary glazing. It is particularly suitable for use in listed buildings and conservation areas. Secondary glazing is perfect for both residential and social housing on main roads – even where double glazed windows are already fitted.


  • Improved thermal insulation
  • Save money on heating bills
  • Highly effective for noise reduction/insulation
  • Provide added security
  • Retain the exterior character of the building


  • Colours available: White, silver, brown or any RAL colour
  • Float, obscure, toughened, laminated, ‘K’ and acoustic glass options
  • Made to measure
  • Face fix (odd leg or subframe) or reveal fix (extended subframe) options
  • Ease of installation
  • Comes complete with trims to cover fixing screws
  • Can incorporate flyscreens, for use in the summer months

Noise Reduction

Noise from traffic, aircraft and the general noise from inner city areas and main roads can be a real disruption to the quality of your living or working environment. Fitting secondary glazing is a cost effective way to significantly reduce external noise. 4mm glass is very effective at providing noise insulation, but by specifying high speculation glass (6mm+) such as laminated glass or acoustic glass you can further improve on the amount of noise reduction.

Thermal Insulation & Draught Reduction

Our secondary glazing can reduce heat loss in your windows by up to 50%. You can specify ordinary float or toughened glass or for even better thermal performance you can specify Pilkington ‘K’ low e glass. By adding the extra pane of glass in addition to your existing windows heat loss is dramatically reduced.

Styles of Secondary Glazing

We offer an extensive secondary glazing range to cater to all your needs. That is designed to suit almost any building, historic or contemporary and to be as sympathetic as possible to the character of the building.

Vertical Sliding

  • Ideal for traditional sash windows
  • Optional spring balances available to support sliding sash in any position
  • Three different frame options
  • Optional tilt back facility

Horizontal Sliding

  • Ideal for casement and ribbon windows
  • Smooth sliding action using nylon pads or roller wheels
  • Three different frame options
  • Three track option for maximum ventilation

Hinged Units

  • Suitable for both windows and doors
  • Butt hinged or friction hinged
  • Two different frame options
  • Perfect for fire escapes and for maximum ventilation

Lift Out and Fixed Units

  • Suitable for applications where access to the existing windows isn’t paramount
  • Perfect for specialist applications (i.e bays)
  • Fixed system is especially cost effective
  • Can easily be curved