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 Our showrooms are now open with social distancing and sanitising stations in place for customers and staff.  If you would like  exclusive access please request this on our on line form or call 01252 617385


Secondary Glazing

Secondary glazing involves installing supplementary glazing on the inside of an existing single-glazed window.  This is a money-saving option for those who need extra insulation, but don’t perhaps have the budget available to completely replace single glazed units with double-glazing.

One of the main reasons why you may choose to replace your existing windows or install secondary glazing is to increase the energy efficiency of your home, helping to reduce your energy bills. Double glazing windows achieve this more effectively, however there is still a saving to be made with secondary glazing.  It also may be an attractive option if you live in a listed building, as you can make your home more energy efficient without the need for planning permission.

Secondary glazing will also help to reduce noise pollution, and because there is a greater cavity between the two pieces of glass in a secondary glazed unit, it has a better dampening effect to cutting out noise than a double glazed unit.

Horizontal Sliding Secondary Glazed Windows

Our horizontal sliding secondary glazed windows blend unobtrusively with most types of existing windows.  Highly efficient in sealing qualities, these windows are combined with easy opening action.  Fitted with nylon skids or ball raced stainless steel rollers, horizontal and vertical slide units are all double-sealed with twin Polypropylene Weatherpile.  Hinged units are retained closed by a semi-automatic catch.

Secondary glazed frames are available in many styles, including circular, square, arched, vertical slider, horizontal slider, lift-out, lift-out over lift-out, hinged or shaped.

If you would like to view secondary window options, please pop in to one of our showrooms, located in Fleet and Arborfield.  No appointment is necessary, but if you would like a chat before you visit, please call 01252 617385 or take advantage of the Crown ‘Request a Call Back’ option.

View the Crown Quality Window Range

Aluminium Windows  Folding Windows  uPVC Windows  Sash Windows  Secondary Glazing  Sliding Windows   Steel Windows  Tilt and Turn  Timber Windows   

Timber Alternative Windows   Velux® Windows


Secondary Glazing

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Recent Work

  • House modernisation in Frimley

    Crown helped transform a 1970s house into a stunning modern looking home with superb curb appeal. Incorporating new anthracite grey flush casement windows, a Solidor timber core composite door, Origin aluminium bi fold doors. Crown also rendered the front and fitted Western Red Cedar timber boards.

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  • Solid roof glazed extension in Yateley

    Crown designed this stunning Ultraframe 380 Solid roof glazed extension in Yateley, Hampshire. Working with the customer, to create their wish for a light and thermally efficient extension, we have built a modern glazed solid roof extension to the rear of their property, fitted with anthracite grey bi folding doors which open up to garden area.

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  • Windows in Alton

    Crown Conservatories & Windows have worked alongside our customer in Alton, Hampshire enhancing their home.

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  • Conservatory Fleet

    Crown designed this traditional conservatory in Fleet with the help of our customer, incorporating their vision for the inside to be brick finished. With tiled effect window boards and tiled flooring, this completes the look.

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Construction of Conservatory. Very professional approach. The tradesmen involved knew...
Mr Harury, Fleet, Hampshire
Fitting of composite front door, upvc back door and 5 upvc windows. Very good service...
Mrs Sanderson, Fleet, Hampshire
Conservatory installation. Brilliant, very good workmen.
Mrs Coles, Fleet, Hampshire
Single story rear extension with Origin bifold doors - excellent, can absolutely recommend
Mr Appel, Bracknell, Berkshire
Doors on conservatory adjusted satisfactorily. Arrived on same day problem noted,...
Mr Wilcock, Wokingham, Berkshire
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