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insulation sound proofing draught proofing stop condensation
elegant secondary glazing
ExtraGlaze contact details
Instant quote
Extraglaze Explained
Measuring Guidelines
free delivery up
order free sample
  • 3 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,...
  • 4 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...
  • 4 months ago
    ratings 5
    Service rating : Great product, informative website, exceeded our expectations
    Product : Perfect fit, practically invisible
  • 4 months ago
    ratings 4
    Excellent result
    Service rating : Extraglaze offer a great service and made a wonderful job of installing secondary glazing on our stained glass windows. They were very patient with me going backwards and forwards to ask for different variations on the quote. However, despite having given as much information in...
  • 4 months ago
    ratings 5
    Service rating : Have used extraglaze several times great service as always !!!
    Product : excellent service and support

Extreme Adhesive Test



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...


Recommended for Listed Buildings


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


Stacking strip per metre


Stacking strip per metre

Parking steel
Parking steelWatch a Sash upper panel being parked onto parking stripsLaminate Colours
£2.39 each
Colour-matched (laminated)


Please order as follows:
- Steel, by the metre
- Stainless steel strips, specify a quantity
NOTE: The stainless steel version is essential for damp and wet rooms. This is supplied in lengths of 950mm. They will very neatly butt up together if you require a longer length.


Simply peel away the pink/red protective coating then apply the steel tape to the left and right sides of the panel you have chosen to stack onto. Click on the window image above to see an animation of how this works. The green highlights show the position of the strips.


This is a steel (or stainless steel) self adhesive tape which can be fixed to the front of an Extraglaze panel. This allows an adjacent panel of the same width to be safely 'stacked' on top, giving you unobstructed access to the window so that it can be opened. The panel can be kept there for the duration of the warmer months, so your window can be opened at any time without having to handle the panel regularly.


Help & Guides

measuring icon


How to stop condensation


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