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CozyGlaze Window Retrofit Specialists

Upgrade Your Windows Without Changing Your Frames For A Fraction Of The Price Of Window Replacement

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master puts a new double-glazed window in a plastic window

Window Glass Replacement | Double Glazed Windows Upgrades

At CozyGlaze, we offer a cost-effective alternative to window replacement.
Our team is able to upgrade any type of windows to ‘A’ rated, heat efficient double glazed windows or triple glazed windows* without the need to replace your existing frames.
We replace glass, not windows, so you don’t have to worry about the cost of window replacement. This means you can have energy-efficient windows in no time by using our window glass repaclement service without the cost of window replacement.

Why Choose CozyGlaze Window Upgrades

  • Quick Quotation
  • 10 Years Warranty
  • Improved BER Rating
  • Improved Heat Retention
  • Lower Energy Bills
  • Removes Condensation
  • Most Retrofits Take One Day
  • Mess Free Installation
Humm Finance

Upgrade Now, Pay Later

We offer flexible finance options on all upgrades with Humm, allowing you to spread your payments over up to 3 years.

Window Types Suitable For Upgrading

Pick your window type to learn more specific information on how we can improve your home.
upvc windows

PVC Window Upgrades

With over 30 years of experience we are able to upgrade any type of a PVC window in a matter of hours


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aluminium windows

Aluminium Window Upgrades

Steel and metal works are not new to us. We know just about every type of aluminium frame on the market


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timber windows

Timber Window Upgrades

We have a dedicated workshop for timber restoration needs. We can restore, upgrade and replicate all wooden frames.


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CozyGlaze Glazing Quality

At CozyGlaze, we take pride in offering the highest quality window glazing for your home. Our A rated glass, combined with Low e plus 2 glass and Argon gas filling, ensures maximum energy efficiency and a comfortable living space. Our glazing also boasts an impressive U-value of 1.1, which means you can trust that your home will be properly insulated against the elements. We understand that the quality of your window glazing is crucial to the comfort and efficiency of your home, which is why we only offer top-of-the-line products that we stand behind with confidence.

A Rated Windows

We use A-rated glass to ensure that our windows meet the highest energy efficiency standards.

Argos Gas Filled Cavity

Our windows feature argon gas filled units that improve insulation and heat retention.


U Value windows

Our windows have a U-value of 1.1, providing excellent thermal insulation.

Low E Plus 2 Glass

Our windows feature Low E Plus 2 glass, which is designed for the best performance

Check Out Our Recent Work
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3 Simple Steps To A Warmer House

Step #1: Contact Us!

We are here for you. Please contact us and one of our team members will guide you through each step as well as answer all the questions.

Step #2: Quotation

We can provide you with a quote over the phone in a matter of minutes or visit you at your preffered time.

Step #3: We Upgrade!

Our team will upgrade your windows. Our lead time is 2-3 weeks and most of our upgrades take one day!

Step #1: Contact Us!

We are here for you. Please contact us and one of our team members will guide you through each step as well as answer all the questions.

Step #2: Quotation

We can provide you with a quote over the phone in a matter of minutes or visit you at your preffered time.

Step #3: We Upgrade!

Our team will upgrade your windows. Our lead time is 2-3 weeks and most of our upgrades take one day!

Get In Touch
  • Free Quote
  • Quick Quotation
  • No Obligations
  • Expert Advice
  • No Spam