Transforming the enjoyment of your own home
Extraglaze Secondary Glazing is a scientifically proven, magnetic secondary glazing, specifically crafted for period windows and historic buildings.
Instant warmth retention
Your windows will look their best for much longer
Condensation very often eliminated, immediately
Clearer than glass
Sound proofing to reduce road noise significantly
Readily shaped to out-of-square frames, arches and more
Super slimline and so discreet it can even fit behind shutters.
Extraglaze Secondary Glazing achieves this with the absolute minimum change to the appearance of any windows. Our customers remark that their secondary glazing is almost invisible, once installed.
The benefits continue:
Instantly feel more comfortable
Your windows made better than ever
No upheaval, building works or decorating
Lower energy bills
Draughts sealed
No damage to existing windows
Light weight and easy to handle
Listed Building Consent not required*
How to compare our Extraglaze and Saverglaze products
...indeed any magnetic secondary glazing :
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System features
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| Fully assembled panels: just unpack & fit | |
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| Superior packaging = safe delivery every time | |
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| All panels labelled for identification | |
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| Panel edge colours match your windows | |
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| Scientifically proven in independent tests | |
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| Extra high bond adhesive | |
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| Frame magnets also match your windows | |
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| Maintenance free magnets | |
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| Genuine Crylux ® clear cast acrylic | |
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| Continually being developed and improved | |
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| Fitted by us option | |
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...over glass in sliding aluminium frames:
| Benefits to consider... | Extraglaze Secondary Glazing | Sliding aluminium |
| Condensation | Very low | ** Serious |
| Thermal insulation | 11% better U-value than aluminium | |
| Product thickness | 8.2mm | Typically 40mm |
| Frames | None | White aluminium |
| Change to your window's appearance | Almost none | A bulky glazed unit |
| Sound proofing | *** ---- Comparable ---- | |
| SURFACES | Warm to the touch | Chilly glass & metal |
*We have installed Extraglaze Secondary Glazing magnetic secondary glazing in all types of listed buildings, in conservation areas and in World Heritage sites. In every case, after discussion with the relevant bodies, no formalities/consent was required. We advise that customers always make appropriate enquiries in case an exception should arise, however usually a phone enquiry is all it takes to get clarification. Should you need information to send to your Conservation Officer please call or email with your request: we can send diagrams for this purpose. Please also order a Free Sample.
**In tests conducted for us at Coventry University, Extraglaze Secondary Glazing suffered 78% less condensation than the aluminium framed glass secondary glazing, when fitted to a sash window, with high humidity 'indoors' and temperatures of between -5 and -10 centigrade 'outdoors'.
***In tests conducted for us at the Building Research Establishment, we compared Extraglaze Secondary Glazing against an aluminium system stiffened by sliding framework running down the centre of the window. This stiffness gave it a slight advantage. Whereas the Extraglaze Secondary Glazing had no stiffeners, and looked much better for it. Had we stiffened it we believe they would have been more comparable.
Fitting Service - or DIY
We can expertly install for you or supply fully assembled panels for you to fit with our full guidance. Order your free sample pack here.
Solutions for listed buildings & conservation areas
Extraglaze Secondary Glazing is the ideal secondary glazing solution for Listed Buildings and for those in Conservation Areas, being particularly suitable for buildings of historic significance. Planning Permission or Listed Building Consent will almost certainly not be required from your local authority. "most authorities encourage the fitting of secondary glazing to increase the thermal efficiency of period windows."
Fitted by Us service – for a fuss free installation
We provide a complete Supply and Fit service, from the initial survey right through to fitting and after sales care. You can get an initial estimate online here without the need for our surveyors to call. If you are happy with your online estimate you can book a comprehensive survey comprising a site visit and fixed price quotation.
Alternatively, to conveniently obtain an initial, informed estimate please send us your own approximate measurements and large, good quality photos of your windows in the first instance.
Where do we install?
We are constantly expanding our network of installers. Some will, and frequently do, travel anywhere they are required to go. Use our Fitter Finder tool to find an installer near you. Most installers will come to you for free within a 50km radius, except for inner city areas where congestion impacts on travel time. If you are beyond a reasonable distance, we will ask a fair and reasonable charge for travel time and fuel.
DIY - fully assembled for you to install
We supply DIY secondary glazing panels ready to install. These are not kits, they are made to measure, fully assembled and ready to apply. In many cases all you need to do is open the box and fit the panels to your windows. We will supply a comprehensive set of fitting instructions and are available to offer help via our helpline phone number or via Skype or Facetime. Download our measuring guide here and then enter your measurements into our online estimator where you can also place an order.
To make an enquiry please use the Contact Us page
or email us -
