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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 4
    Seems a good product and blends in very well with our decor.
    I had internet quote which was straightforward with good tips and advise on the measuring. Felt confident when I sent it that it would be ok.
    I sent for quote as diy and fitted by extra glaze and my only thought was that their quote for fitting sounded quite high.
    Thank you Lee for the positive feedback. It is true that the labour cost of our Fitted by Us service can be quite high. This is dependent largely on the distance from our nearest fitter and whether the work can be done in one or a series of days that might include overnight stays, etc. Just like we...
    lee rogers, Stoke-on-Trent
  • 1 month ago
    ratings 5
    Narrowboat Aslan
    Ease of ordering, telephone assistance where required and prompt delivery
    Product : Very easy to order, very easy to install that gives a professional look whilst using just DIY skills
  • 2 months ago
    ratings 5
    Excellent, friendly and professional!
    Excellent, professional and responsive. Very happy with the work done!
    Product : Fantastic professional service! I recommend them to everyone!
  • 2 months ago
    ratings 5
    What a difference!! No more cold blasts when you pass the windows.
    Very nice chap from Extraglaze fitted the product to my very draughty sash windows. The price did come up a little more than the on line pricing tool but nothing is perfect. Very clean and tidy workmanship and completed within the agreen time scale.
    Product : Very discrete panels...
    Mandy McDermott, Rossett Wrexham
  • 4 months ago
    ratings 5
    Cannot recommend highly enough - superb service and standard
    First class - I made a mistake on my measuring and Nic and his team could not have been more accommodating. Glazing is now in place and looks superb. The white border on both glazing and inner magnet (ensuring it still looks discreet in summer when the glazing is removed) is very good...
    Sarah L

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.

  • Click "Calculate" to record each window project. However, to see them again in future visits, please register or sign in.

Project form


Our ready to fit secondary glazing panels are easy to install.

Getting the measurements spot on is crucial and for this we have a measuring guide complete with lots of illustrations, plus we are always on hand via telephone, email, FaceTime or Skype to offer further help. Once you have placed an order we will also supply an easy to follow installation guide.

measuring icon


Step 1 - Download our easy to follow measuring guide >>>


Step 2 - Enter your required sizes into the forms below


Step 3 - Order your Extraglaze panels online


Delivery is normally around two weeks but will depend on the quantity and complexity of your order



If you haven't already done so, get a free sample and select a magnet and panel edge colour to best match your window paint or wood texture. Our standard is satin white wood grain texture.


Start here...


This form will estimate the total cost to have Extraglaze installed by one of our fitters. It assumes your windows are in good condition and that Extraglaze can be fitted without us having to carry out any remedial work to them. If the estimate is acceptable then you may order a survey. This will identify any additional works or material required. A new price will then be calculated and presented to you by the surveyor, as a fixed price quotation.


Measuring for an estimate

Please take measurements across the entire glazed area. Any measurement plus or minus 25mm is not likely to affect the estimated price, so you don't have to be extremely accurate at this point. Our surveyor will do the final, precise measurements.



DIY (Made To Order panels) Fitted by us (estimate) Type:   Fitted by us (estimate)
Project name:  
Post code:  
Window 1
Name :
Window type :
Width (mm) :

Height (mm) :
Area (sqm) :

Hinged upper panel :
Covered by :

Panel 1

Area (sqm) :

Large panel
This size panel requires 20mm magnets on all edges. Tooltip
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Estimated total : £0.00
Payable now (survey fee) : £0.00
A local fitter could save you £'s

We can reduce the cost of this project (travel costs and time) by training a local joiner or similar tradesperson for you. If you know someone, and can vouch for their reputation, please ask him/her to contact us. We will provide reliable support, and consequently we could re-price this project to save you a considerable amount of money.

Get a FREE remote survey -  Find out more ...


Help & Guides

measuring icon


How to stop condensation


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