Secondary glazing offers the most effective sound insulation. Reduces noise by up to 80% and significantly outperforms double glazing.
Secondary glazing improves thermal insulation of existing single-glazed windows by around 65%, approximately 10% more than double glazing achieves.
Secondary glazing is an affordable, discreet, highly effective soloution to enhancing security. No external access required for installation.
Not every home is suited for double glazing. If you live in an older property or a house within a conservation area where installing modern uPVC aluminium double glazed windows isn’t possible secondary glazing could be the solution.
Secondary glazing involves adding a slim-line window frame that fits over your existing windows. Secondary glazing provides all the benefits of double glazing – reduced heat loss, improved sound insulation, better protection against draughts and cold spots – without the need to replace your existing windows. This is good if you want a warmer home but aren’t permitted, or can’t afford, to upgrade your current windows to modern uPVC or aluminium ones. It’s also a practical solution if you live in a noisy area where you need extra sound insulation
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Our secondary glazing is available as fixed panes and lift out windows as well as horizontal and vertical sliding windows, all available in a wide range of colours. Our vertical sliding secondary glazing comes with spring balances for an easy controlled operation and a tilt in facility for easy cleaning.
Secondary glazing doesn’t change a building’s original features and can be removed later if needed. As such it’s usually accepted in heritage properties where maintaining original aesthetics is crucial. The wide range of specialist glass now available means that we can offer exceptional sound reduction or thermal enhancements to your existing windows.
Please reach us at info@sashall.co.uk if you cannot find an answer to your question.
Secondary glazing is a second custom-made window, attached to the inside of your existing window, creating a double glazed effect, with out damaging or changing your original windows. Our secondary glazing is designed to be discreet and compliment the appearance, décor style and property type.
Our Supply Only standard systems are normally dispatched within 4-6-weeks from customer approval this would be for rectangular style units but includes splayed reveals and bays if required. More complex requirements, e.g. arched windows. would take a little longer.
Yes, we offer window installation services for both residential and commercial properties.
Our Secondary Glazing can enhance the thermal insulation of a single glazed window by as much as 65% or a U-Value of 1.868 W/m2K (a U-Value is the formula for measuring heat loss the bigger the number the more inefficient the window is, a standard single glazed window has a recognised U-Value of approx. 5.8 W/m2K. This performance is better than a Class C, with some products this performance can be as much as A+. English Heritage and Historic Scotland carried out research through Glasgow University which showed secondary glazing out performed double glazed replacement windows.
Yes. In most cases, secondary glazing meets the requirements of Buildings and Conservation regulations associated with both Grade II & I listed buildings, as it is a completely reversible installation that does not effect the fabric of the building. However, subject to your property listing status, we recommend liaising with your local conservation officer who will be able to give you further advice.