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insulation sound proofing draught proofing stop condensation
elegant secondary glazing
ExtraGlaze contact details
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Extraglaze Explained
Measuring Guidelines
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  • 2 weeks 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...
  • 2 weeks ago
    ratings 5
    Service rating : Have used extraglaze several times great service as always !!!
    Product : excellent service and support
  • 3 weeks ago
    ratings 5
    Service rating : Excellent level of communication, explanation and general contact. Nic was always there to discuss, answer questions or clarify any query.
    Product : The panels are excellent, and the magnetic fixings have worked a treat. They are virtually invisible and have cut our condensation...
    Dr Martin Toms, Herefordshire
  • 3 weeks ago
    ratings 5
    Outstanding product, 5 star service
    Service rating : Nic Irvine provided fantastic service from start to finish. He was happy to spend time on the phone answering numerous questions about the product initially. He then took time doing a detailed survey of our windows, established recommendation from someone I was able to visit, and...
    Rebecca Burrell
  • 4 weeks ago
    ratings 4
    Service rating : Delivered what and when was required
    Product : same as previously ordered
    George Tillier

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.


Extreme Adhesive Test Video


We needed to use an adhesive not prone to the problems we'd seen in competing products.

We found one we preferred and tested it.

We had fun proving just how strong it really is. It's the same adhesive used to fix Extraglaze Secondary Glazing panels to window frames. The amount of adhesive used in this test is the same as we would put around the edges of a panel of size 1.2m wide by 1.2m tall.

Help & Guides

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How to stop condensation


For sash windows
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For casement windows
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Easy Open System
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