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insulation sound proofing draught proofing stop condensation
ExtraGlaze contact details
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Extraglaze Explained
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Solutions for listed buildings
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  • 2 weeks ago
    ratings 5
    Brilliant solution for beautiful, but cold, sash windows.
    Excellent, from the time they sent the sample product and the informative booklet. Ordering was simple and when I queried the delivery date they responded with a personal phone call.
    The secondary glazing arrived as ordered, fits perfectly and we are now so much warmer in our...
    Read more...
    Mrs Carole Proud
  • 1 month ago
    ratings 5
    Great product, great service.
    It took us a while to decide to invest in secondary glazing from Extraglaze but we are glad we did!
    From the measuring and fitting instructions to checking details and requirements for accessories and arranging delivery to suit, the service was first class.
    Product : We tried...
    Thank you so much for your praise. We enjoy what we do here - and all the more when we read such great reviews like your own. We hope many others are encouraged to try Extraglaze as a result.
    Read more...
  • 4 months ago
    ratings 4
    Seems a good product and blends in very well with our decor.
    I had internet quote which was straightforward with good tips and advise on the measuring. Felt confident when I sent it that it would be ok.
    I sent for quote as diy and fitted by extra glaze and my only thought was that their quote for fitting sounded quite high.
    Product...
    Thank you Lee for the positive feedback. It is true that the labour cost of our Fitted by Us service can be quite high. This is dependent largely on the distance from our nearest fitter and whether the work can be done in one or a series of days that might include overnight stays, etc. Just like we...
    Read more...
    lee rogers, Stoke-on-Trent
  • 5 months ago
    ratings 5
    Narrowboat Aslan
    Ease of ordering, telephone assistance where required and prompt delivery
    Product : Very easy to order, very easy to install that gives a professional look whilst using just DIY skills
  • 5 months ago
    ratings 5
    Excellent, friendly and professional!
    Excellent, professional and responsive. Very happy with the work done!
    Product : Fantastic professional service! I recommend them to everyone!

Extreme Adhesive Test

 

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We wanted to prove to ourselves our adhesive is as good as if not the best!

Proven to improve

 

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The Building Research Establishment and Coventry University complete tests of the Extraglaze system
Soundproofing and thermal test results...

Read more...

Recommended for Listed Buildings

 

Telford and Wrekin Conservation Department encourage the use of secondary glazing, where possible, to increase thermal efficiency.

Read more...
 

Proven to improve

 

Extraglaze tested at Coventry University and at the Building Research Establishment

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Coventry University – Thermal insulation tests

In April 2014 we received confirmation that Extraglaze is a scientifically proven thermal insulation solution that beats a typical aluminium framed alternative.
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Outside the University's Environmental Chamber.
 
Below - Extraglaze put to the test in the Environmental Chamber

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The university's Sustainable Buildings Future Project used their Environmental Chamber to compare Extraglaze with an aluminium-framed, glass-pane secondary glazing system...
...Extraglaze came out the clear leader.

arrowpichigh tinyWith both systems tested on a single glazed sash window the U-value for Extraglaze proved 11% better (2.28W/m²) than the alternative product.

arrowpichigh tinyWe already knew that Extraglaze would be a better solution to deal with condensation, and the tests confirmed it. In a humid room test (60%RH), with below zero temperatures outside (-5 and -10ºC), Extraglaze was an impressive 78% better.

bre logo BRE – Sound insulation tests
In July 2013 a large timber framed window (1.3m² of visible glass) was installed in the Building Research Establishment's (BRE) Horizontal Transmission Suite, and tested against an aluminium framed glass secondary glazing system. A wide range of tests were made, to see how secondary glazing could not only improve a single glazed window but even a double glazed window.
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Extraglaze put to the test in the Horizontal Transmission Suite
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To summarise the results both systems were rated "good" as a sound insulator for noise problems. We learned in particular that smaller panels do best, being more rigid, and the larger the gap, between the original window glass and the Extraglaze, the better. What surprised us most was that it didn't seem to make much difference whether the original window was double glazed or single glazed.

Proof in practice
In January 2014 Extraglaze was installed onto brand new triple glazed UPVC bay windows in a home by a main road. The triple glazing had been installed to cut the road noise but had proven ineffective. However, with the addition of Extraglaze road noise was almost completely eliminated.
extraglaze soundproofing

And news from customers...

We have an ever increasing number of fabulous testimonies from our customers, which can be seen in the many reviews they have left on Feefo. It is clear that our customers enjoy their homes much more now than they did before Extraglaze was installed, being much warmer and much quieter.

For more information about Extraglaze please view the information in this site or contact us on the number above.

If you are an engineer or architect please contact us to discuss the results of tests in more detail.

 

Help & Guides

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How to stop condensation

 

A typical installation
 
For sash windows
 
For casement windows
 
Easy Open System
 

 

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