Double glazing 1st choice, secondary glazing 2nd choice

When looking to improve the existing windows your property, your preference in my opinion should always be high quality energy rated energy efficient UPVC or aluminium replacement double glazed windows, as these are not only better looking aesthetically than secondary glazed windows, they add more residual value, given they are more thermally efficient than single glazed windows that have been retro fitted with secondary glazing.

Consequently, my first choice would always be modern energy rated replacement double glazed windows, as their performance if “C”, “B” or “A” rated can not be matched by existing windows that can not achieve one of these energy ratings awarded following testing by the British Fenestration Rating Council, then endorsed by the Energy Saving Trust. If however, circumstances dictate that your local authority planning department will only allow you to replace the existing windows in your property with like for like windows (i.e. single glazed wooden sash or crittal windows) because it is in an area of outstanding natural beauty, or in a conservation area or it is a listed building, then secondary glazed windows are an essential option which will enable you to reduce heat loss and cut down on external noise.

So although double glazing or even triple glazing is preferred for sight lines alone, secondary glazing is a good second choice when external double glazing is not “allowed” as your first choice because of the current UK planning restrictions. Secondary glazing to match your existing window configurations as far as possible is nowadays available, as has been designed to be as unobtrusive as possible. Consequently, Bucks based Hazlemere Window Company supply and fit secondary glazed window systems that are horizontal sliding, vertical sliding, side hinged, lift out, fixed, butt hinged, clip in, clip out or combination units (i.e. side hinged and lift out secondary glazed window systems). Also available is a heavy duty double glazed secondary glazed window system, where noise and/or heat loss is a particular problem and added insulation for a particular property is needed. Find out more about the benefits and types of secondary glazing


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