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insulation sound proofing draught proofing stop condensation
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Extraglaze Explained
Measuring Guidelines
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  • 15 hours ago
    ratings 5
    Perfect secondary glazing
    Perfect product for old single glazed windows. It does protect from cold air, condensation and overall bad feelings what bad windows give you. Easy to install DIY. Thank you for great support from Extraglaze.
    Product : Perfect material for easy installation. Blocks out cold perfectly.
    Balint Laszlo
  • 2 weeks ago
    ratings 5
    Great service
    Just received my second order of Extraglaze panels and am delighted with the quality and service which is second to none.
    Product : I own a listed building so I needed a sympathetic solution to heat loss and noise reduction from cars etc. The product is a joy to fit and it really...
    David Wilkinson
  • 3 weeks ago
    ratings 5
    Pro firm
    Very good customer service, I was impressed with the way they handled my various problems over the course of a large and challenging job; a professional outfit.
    Product : A very good product, simple but effective
    Mark Cass, Hove
  • 1 month ago
    ratings 5
    Excellent customer service and a great product.
    Graham Hibberd
  • 1 month ago
    ratings 5
    Brilliant communications, both telephone and online. Ordering our secondary glazing was so easy. Printed and online measuring instructions were simple to follow. Everything arrived well packaged and cut and assembled to perfect size.
    Installation was quick and simple. Looks a treat.

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.


Help & Guides

measuring icon


How to stop condensation


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