Double glazing improves your home’s energy efficiency by reducing heat loss, lowers noise from outside, enhances security with stronger glass, and reduces condensation. It can also boost property value and requires minimal maintenance, making it a smart investment for comfort, safety, and savings.
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Britannia Windows thinks double glazing should be priced fairly. Our online quotation engine allows you to enter your measurements for a personalised estimate. Start right now with a free online double glazing quote!

Thermally Efficient Double Glazing
Double glazing is a smart choice for making the most of your Bristol home by improving thermal efficiency. It helps maintain a consistent, comfortable temperature year round, reducing heat loss in winter and keeping your home cool in summer. This can lower your energy bills by reducing the need for extra heating. Installing double glazed windows and doors is an effective way to boost your home’s energy efficiency and comfort.
Why Choose Britannia?
40 Years of Experience
When it comes to installing double glazing, experience matters. With over 40 years of industry expertise, Britannia stands out as a trusted name you can rely on. Our proven track record ensures your home is in safe hands, delivering exceptional quality and professional service every time.
Tailored Fit
Unlike many home improvement companies, we don’t believe in mass production. At Britannia, we tailor our double glazing specifically for your Bristol home, ensuring your windows and doors are customised to your exact preferences. We’re here to help you find the perfect fit that complements your style and needs.
Wide Range
With our extensive range of double glazing products, the possibilities for upgrading your home are endless. We offer a vast selection of styles and designs across all categories, ensuring you find the perfect fit to complement your property. Explore our wide variety of windows, doors, and conservatories today.
Finance Available
Choosing the right double glazing for your home can be a significant investment. To make this easier, we offer a range of flexible financing options, allowing you to spread the cost over a period that suits your budget and individual needs.
Custom Designs
While functionality is often the main factor when choosing double glazing, style is equally important. Every home has its own unique character, and with our wide range of colours and styles, you can create the perfect look to complement your property.
10 Year Guarantee
We have complete confidence in the quality of the double glazing systems we offer. That’s why we back every installation with a 10 year warranty, ensuring your home improvements will stand the test of time for at least a decade.

Save Energy With New Windows
Double glazing plays a vital role in improving your home’s thermal performance by reducing heat transfer between the interior and exterior. This helps maintain a consistent indoor temperature, which could increase comfort and lower energy costs. It also provides excellent sound insulation, ideal for homeowners near busy roads or Bristol’s bustling city centre. We offer a wide range of double glazed windows to suit any property style, from traditional bow and bay and sliding sash windows to sleek, modern aluminium frames.
In addition to energy efficiency and noise reduction, double glazed windows enhance your home’s security, as they are much harder to break than single pane alternatives. Their durability and energy saving benefits make them an environmentally friendly choice for both new builds and renovations in Bristol.

Doors Designed For Style
At Britannia Windows, we pride ourselves on offering a wide selection of double glazed doors designed to suit every style and requirement in Bristol. Whether you’re looking for a classic front door design to complement a traditional home or a sleek, modern bifold option to enhance a contemporary property, we have choices to match your vision.
Our doors come in a variety of materials, finishes, and configurations, allowing you to personalise every detail to perfectly reflect your taste. With expert guidance and professional installation, we make it easy to find the ideal double glazed door that combines beauty, functionality, and security for your home in Bristol.
Frequently Asked Questions
Why should I get double glazing?
What is the difference between double and triple glazing?
Double glazing has two glass panes with a gap between them, while triple glazing has three panes with two gaps. Triple glazing offers better insulation and noise reduction but is usually more expensive and heavier than double glazing.
How much does double glazing cost?
The cost of double glazing varies depending on the type of product, the size of the windows or doors, and the number of units you need. For an accurate and personalised price, use our free online quoting engine to get a quick estimate tailored to your project.


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