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Extraglaze Explained
Measuring Guidelines
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  • 4 weeks ago
    ratings 5
    Great product and easy to fit. Reduced condensation and traffic noise
    Service rating : Great service and packed with care. Each piece was labelled to make fitting clearer and to avoid mistakes.
    Product : Great product, effective and easy to fit.
    Martin Jebb
  • 4 weeks ago
    ratings 5
    Easy to install and very effective
    Excellent product, easy to install and we’re already enjoying the benefits.
  • 4 months ago
    ratings 5
    Excellent service !
    Service rating : Excellent and very pleasant customer service. Richard and Nic are very helpful on the phone and always happy to answer questions and give advice.
    Product : The glazing panels are very well made and easy to fit. I found the instructions for self - fitting a little daunting at first,...
  • 5 months ago
    ratings 5
    Service rating : Slow but everything arrived in good order, very well packed
    Product : Only available solution for our huge sash window.

    Looks decent, was easy to put up. Seals tighter than other systems we have tried.

    Seemed expensive for two sheets of perspex and a few...
  • 5 months ago
    ratings 5
    Service rating : Great product, informative website, exceeded our expectations
    Product : Perfect fit, practically invisible

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

 

coventry university logo bre logo

 

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...
 

DIY Delivery & Installation

 

 

flat surface troubleshoot 1Extraglaze is applied on the inside of any window, never outside. Some windows will only require one panel of Extraglaze. More than 3 panels is unusual, except for bay windows.


When looking at your windows all we need to know is that:

1 there is a flat surface all the way around each window

2 the flat surface is in good condition (good paintwork)

 

 

Flat surfaces absent?

In some situations one or more flat surfaces are missing. An example is shown in the animation to the right. Our fitters are resourceful, and can usually add a very effective instant, white flat surface.

 

Sash Windows – parting beads

On sash windows the flat surface is often interrupted by the parting beads (as shown above).

Our fitters will usually be able to bridge this without modification of the bead.

 

Window painting

If you are painting your windows in advance of Extraglaze it is very important to do this to a professional standard. This would include removal of loose paint, a good sanding down, cleaning with methylated spirits (use white spirit for oil based paints), and primer applied before undercoat or top coats.

 

To make an enquiry use the Contact Us page or email using This email address is being protected from spambots. You need JavaScript enabled to view it..

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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