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insulation sound proofing draught proofing stop condensation
ExtraGlaze contact details
Instant quote
Extraglaze Explained
Measuring Guidelines
Solutions for listed buildings
order free sample
  • 6 days ago
    ratings 5
    Nothing to complain about - perfect for the job
    Easy and accurate
    Product : Ideal product and fit and ease of installation
  • 2 weeks ago
    ratings 5
    Excellent service throughout
    Very helpful advice over the phone prior to placing order and they responded quickly when we found we had missed one panel from our order - they went out of their way to complete the order promptly so that we were able to install before Christmas. Felt confident in their...
    Jill Wilson
  • 4 weeks ago
    ratings 5
    Excellent secondary glazing
    Easy to use website, delivery was in a very well packed box protected well from any potential damage.
    Product : It works extremely well reducing noise and cutting out all the draught. It makes an amazing difference to the room . The frames blend into the window and you hardly...
  • 1 month ago
    ratings 5
    Very efficient service and precise ordering details to ensure correct measurement of glazing. Also pleased with the comprehensive fitting instruction - process was easy to follow and went well.
    Product : Fitting has been fine - panel hasn’t been in place long enough yet to see if...
  • 1 month ago
    ratings 5
    Product delivered on time and to exact measurements. They look so good you hardly see them
    Paul Robinson, West Sussex

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.


Remote surveying and using local tradespeople


Free remote surveys

We can survey your windows free of charge remotely. If you have a smartphone or tablet and broadband we can offer this service and talk with you at the same time. You will need:

  • a smartphone or iPad/tablet with a camera
  • a laptop with a camera

We will guide you as we look together at each window, looking for any issues that need to be addressed, and also as you take measurements, which don't have to be precise. In most cases we can then calculate and give you a fixed price for the work. For some situations it may highlight the fact that we need to visit to carry out a detailed survey. Depending on your distance from us, there may be a charge for a site survey.

Use a local tradesperson to cut your costs

We are always looking for trades people to expand our network of fitters. We will train them to our high standards and credit them as Approved Extraglaze Installers. Once approved we offer access to a range of additional solutions we have developed over the years. Our fitters charge their own fees for installation. Consequently you will get a keen, locally delivered service at an economical price.

Alternatively please send us photos of your windows by email, to This email address is being protected from spambots. You need JavaScript enabled to view it.
We can then review your pictures and offer our best solution and guidance with how to measure.

Help & Guides

measuring icon


How to stop condensation


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