Premium Windows For Your Home
Get Your Free QuoteHere at Britannia Windows, we have engineered a range of high-end, flush finish heritage windows for you to choose from. The Residence Collection provides understated style and sophistication to any home in Portsmouth, designed to incorporate design elements from the 19th century, these windows provide stunning aesthetics and form without compromising on performance.
Browse our range of heritage windows today to find the right model to suit your home.

R² Window

Residence 7 Window

Residence 9 Window
Residence 2
Among our collection, the Residence² model is designed to seamlessly blend with your home’s existing architecture, while significantly enhancing your thermal efficiency. Known for its sleek, contemporary frames and distinctive square interior design, this heritage window adds a refined touch of elegance to your living space in Portsmouth. Aside from its aesthetic appeal, these heritage windows are engineered for long-lasting performance, maintaining your home’s internal temperature and achieving impressive U-values as low as 0.79 W/m²K.
To learn more about the Residence² and how it can enhance your home, contact our team today!
Residence 7
Part of our exclusive Residence Collection, the Residence 7 window is engineered to significantly enhance your home’s energy efficiency by retaining heat while minimising noise pollution. With a sophisticated design, these heritage windows feature seven internal chambers, surpassing the typical 3 to 5 found in standard models. This innovative construction is paired with a sleek 75mm thick frame, offering a noticeable upgrade over the standard 70mm thickness, and providing exceptional thermal performance.
Homeowners in Portsmouth can further customise the Residence 7 to their unique tastes, choosing between mechanically jointed windows for a classic appearance or welded windows with a diagonal seam for a more contemporary edge to their heritage windows.
Designed for effortless maintenance, these heritage windows are crafted from high-quality, durable materials that are resistant to daily wear and tear. No need for regular varnishing or painting—simply wipe with a damp cloth to maintain their fresh appearance for years to come.
Residence 9
The Residence 9 window beautifully blends the charm of 19th-century aesthetics with cutting-edge innovation, delivering striking visuals and outstanding performance. Featuring an advanced 9 chamber design and a robust 100mm thick profile, these heritage windows offer superior security, thermal efficiency, and longevity for your Portsmouth home. Our standard double glazing ensures optimal insulation, with the option to upgrade to triple glazing for those seeking maximum energy efficiency from their heritage windows.
Tailored to complement the unique character of your home, the Residence 9 can be customised in a wide range of colours, from subtle natural tones to bold, vibrant hues. For a classic timber-effect finish, select from our wood-grain foils, offering the timeless beauty of wooden heritage windows combined with modern performance.
Frame Colours

Black

Clotted Cream

Corse Lawn

Cotswold Biscuit

Cotswold Green

Eclectic Grey

English Oak

Golden Oak

Grained White

Irish Oak

Painswick

Rosewood

Silvered Oak
Available Online, In-Store or At Home
Experience the freedom of obtaining the products you desire, tailored to your preferences. Our dedicated team is always available to assist you whenever you require assistance. Your satisfaction is our priority.

Online
Request a quote, use our digital designer or schedule a free one-to-one session with a design expert
Get a free online quote
In Store
Email us to learn more or to book an appointment to visit the showroom.
Get in Touch
At Home
Have our friendly design expert over to discuss your project, advise and take measurements for an on-the-spot quote.
Book a home visitGet a FREE Window Quote
Customisation Options

Cassini

Chantilly

Charcoal Sticks

Contora

Digital

Florielle

Warwick

Taffeta

Everglade

Mayflower

Oak

Pelerine

Reeded

Tribal
Frequently Asked Questions
Take a look at some of the questions previous customers have asked regarding our heritage windows. If there’s something we haven’t covered, contact us online or over the phone to talk to our expert team today.
What is the difference between the R7 and R9 window?
The Residence 9 window has 9 chambers, whereas the Residence 7 has 7 chambers. The number of chambers improves the energy efficiency of the window, this makes the Residence 9 slightly better in performance in terms of the thermal properties.
Where can I find prices?
Discover what we can do for your home today by using our online quoting engine to receive a free, no-obligation quote or contact our team for more information!
Happy Customers
Meg Welch
Great job of our new front door. They couldn’t have been more helpful and even fitted earlier than originally planned. Also gave great aftercare advice and at a very reasonable price! Would 100% recommend.
Annette Clemons
Cannot recommend Britannia Windows enough! Joe & Keith, the installers were great – explained what was to be done, showed me everything I needed to know upon completion, very considerate & tidied up really nicely. Very friendly guys who are an asset to the team!!
I LOVE my new windows & door. Such an improvement.
Rachel Godfrey
We have been extremely pleased with Britannia’s service. From the initial quote through to installation they were great and really easy to communicate with. We had our conservatory roof replaced and they were by far the least pushy and most competitive in terms of pricing.
We can definitely recommend their services and will likely be returning again soon for a new front door!
Peter Burgess
Fantastic job from initial phone call through to final tidy-up.
Britannia provided great advice before purchasing my new windows and fitted them to a high standard being punctual and polite throughout.
No request was a problem and I will definitely be using them again and would recommend to friends and family.
Jerry G
Wow a fantastic job by both sales team and fitting team.
Sam provided excellent service and answered any questions that we had. Luke, Dave, Keith and Joe did a fab job at fitting the windows and doors. Never having had anything like this done before I was a little nervous but the guys were clean and tidy and the outcome is amazing.
Would highly recommend.
