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Secondary Glazing

Internal Secondary Double Glazing is a cost effective solution if the main window is essentially sound and in good condition but there is a requirement to improve thermal or noise insulation

If the main reason for considering Secondary Double Glazing is for sound insulation.

Secondary Double Glazing is suitable for all Conservation Areas and (subject to listing detail) Listed Buildings.

Manufactured from slim, unobtrusive white enameled aluminum profiles usually with single glazing. Double glazing is also available for specialist applications. These units replicate the design of and are installed inside the main, or primary, window.

The product range includes:

  • Vertical sliders for Sash Windows, with a tilting and removable sash facility for ease of cleaning
  • Horizontal sliders with removable sashes for 'picture' type casement windows
  • Hinged units for narrow casements, doors & French doors or windows. Sashes can be lifted off
  • Lift out units for use when only occasional access is required to the primary main window
  • Fixed units, usually only used to insulate glass panels within doors 

    • Further Information

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    Tilt and Turn

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    Vertical Sliders

    The vertical sliding sash window range combines the elegance of traditional sash windows with the be...

    Secondary Glazing

    Internal Secondary Double Glazing is a cost effective solution if the main window is essentially sou...

    Customer Testimonials

    Mr & Mrs Moreton St Georges Telford Shropshire.

    Mr & Mrs Moreton St Georges Telford Shropshire. Excellent. Really pleased with the whole service, right through from the quote from Andy, the servey from Mark and the two fitters both doing a fantastic job! Read More...

    Mr Mrs Stacey Newport Shropshire

    Mr Mrs Stacey Newport Shropshire. To remove Polycarb Conservatory roof and fit new Conservatory roof with active glass Newport Shropshire. My new glass roof looks fantastic a superior product fitted in a exemplary fashion, neat and tidy, finished to a very high standard....

    Miss Rutter Stirchley Telford Shropshire

    Miss Rutter Stirchley Telford Shropshire. Double Glazed White Pvc Entrance door with Oak glass. Telford Shropshire Very pleased with work done....

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    About C-Thru

    C-Thru Shropshire Limited - the clear choice for beautiful conservatories,  windows and doors in Telford  Shrewsbury and Shropshire. C-Thru boasts  the largest indoor showrooms in Shropshire. With over 14 full-sized conservatories available to view  in St Georges, Telford, and Roden Nurseries, Roden near Shrewsbury, the specialist C-Thru design team will help you plan your new conservatory and create a new, brighter environment.