Decades of Experience
Over 30 years in the trade, bringing proven expertise.
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Classic design with a modern touch
French casement windows open fully from the middle to provide panoramic views and improved ventilation. A timeless style, they’re ideal for both replacement windows and new builds across the Sussex area.
Made from durable uPVC, our French casement windows deliver energy efficiency, natural light, and minimal maintenance.
Why choose French casement windows?
Panoramic views
Both sashes open fully, offering clear sightlines and improved airflow with minimal disruption indoors.
Energy efficiency
WER A+ with double glazing and as low as 0.8 U-value A++ with triple glazing.
Classic design
Traditional look with modern uPVC performance
Wide range of options
Available in multiple colours, finishes, and glazing choices to meet specific needs.
Durable and low-maintenance
Strong uPVC frames ensure minimal maintenance while meeting the highest standards.
Trusted expertise
Decades of experience serving Sussex and the surrounding areas.
- Colours
- Glazing
- Downloads
A wide range of finishes
Choose from over 30 frame colours, including White, Cream, Chartwell Green, Anthracite Grey, and timber-look finishes. Dual colour options are also available.
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Efficient Glazing Options
Our French casement windows achieve WER A+ with double glazing and can reach A++ with triple glazing, lowering energy bills and boosting comfort year-round.
Double or triple glazing options
U-values from 1.2 W/m²K down to 0.8 W/m²K
Acoustic performance up to 44dB
Designed for energy efficiency and security
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Download our brochure
View our brochure to explore designs, specifications, and colour options for French casement windows.
What makes French casement windows different?
French casement windows open from the centre, with both sashes swinging clear of the frame. This design maximises ventilation, natural light and panoramic views, making them a standout alternative to original windows.
They achieve outstanding energy efficiency too, with double glazing rated A+ and triple glazing reaching A++. It’s a classic design with modern uPVC for great aesthetics and performance.
Perfect for a range of homes
French casement windows are ideal for living rooms, kitchens, and bedrooms where natural light and ventilation matter most. Opening fully from the centre, they’re perfect for creating an open, airy feel with panoramic views.
They also suit a wide range of homes in the Sussex area – from traditional cottages needing a classic design to modern new builds seeking energy efficiency with minimal maintenance. With decades of experience, our installations are carried out with minimal disruption and to the highest standards.
French Casement Windows FAQs
Here are answers to some of the common questions that we get about our French casement windows.
Find out moreFrench casement windows are windows with two side openers. When both are open, there is no central fixed vertical mullion - perfect for handing out snacks from the kitchen to the garden as there is a clear opening!
No, our uPVC windows are designed for minimal maintenance, staying durable and weather-resistant for years.
Yes, they achieve A+ with double glazing and A++ with triple glazing, with U-values as low as 0.8 W/m²K.
Yes, we offer a wide range of options in colours, finishes, and glazing to match your home’s style.
Yes, we install French casement windows across Brighton, Hove, and the wider Sussex area, including surrounding areas.
Your Journey with Us
Explore Your Options
Browse our range of options to find the right fit for your home improvement project.
Your Journey with Us
Free Consultation
Contact us, and our team will offer clear advice, helping you choose the perfect solution for your specific needs.
Your Journey with Us
Professional Installation
Our reliable expert installation team delivers a smooth, efficient service with minimal disruption.
Your Journey with Us
Aftercare & Support
We’ll make sure everything works as intended and leave you nothing short of delighted with your finished home improvement project.
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Hear from our customers
Read how other homeowners rate our products, service, and results across Brighton and Sussex.
All round great service
Excellent service from Premier Windows. Totally reliable and well managed. Paul is always very helpful and good communicator. All round great service.
Read moreJudith Elliott
I will be using your services again
Had a new door and window fitted into my new kitchen extension. The fitter was first class and the product and installation excellent. Can't believe the light it's brought into...
Read moreJohn R
We would recommend
We are extremely happy with the double glazing fitted this week by Premier Windows, our 4 bedded house completed in 3 days with minimal dust or disruption. Terry and Daryl...
Read moreDanise L
Couldn’t have asked for better quality
Thank you so much our bifold doors and new front door are truly amazing. Couldn't have asked for better quality, service or price. We will definitely be going back when...
Read moreVenos
I would not hesitate in recommending them
I purchased a new-build property two years ago. The excellent quality windows and doors were installed by Premier Windows. The company also offers a first class response in the unlikely...
Read moreRobert L
Really good and reliable company
I bought the exterior door and I love it. Phil from the sales department offered me several solutions to make me happy with colours, materials and prices. He followed me...
Read moreStefanial
All round great service
Excellent service from Premier Windows. Totally reliable and well managed. Paul is always very helpful and good communicator. All round great service.
Judith Elliott
I will be using your services again
Had a new door and window fitted into my new kitchen extension. The fitter was first class and the product and installation excellent. Can’t believe the light it’s brought into the space and the difference its made. The whole job was completed in a morning without any mess. I will be using your services again.
John R
We would recommend
We are extremely happy with the double glazing fitted this week by Premier Windows, our 4 bedded house completed in 3 days with minimal dust or disruption. Terry and Daryl were polite and helpful and all dealings with the company were very satisfactory the price was actually less than expected. We would recommend.
Danise L
Couldn’t have asked for better quality
Thank you so much our bifold doors and new front door are truly amazing. Couldn’t have asked for better quality, service or price. We will definitely be going back when we replace our windows!
Venos
I would not hesitate in recommending them
I purchased a new-build property two years ago. The excellent quality windows and doors were installed by Premier Windows. The company also offers a first class response in the unlikely event of a problem. I would not hesitate in recommending them.
Robert L
Really good and reliable company
I bought the exterior door and I love it. Phil from the sales department offered me several solutions to make me happy with colours, materials and prices. He followed me through the entire process and always answered all my questions and concerns. With him, I obtained a colour that was not that easy to get from other companies.
The installation team was also really nice. In particular, there was a guy from Bulgaria who did an amazing job in a couple of hours and left everything nice and clean.
I would definitely recommend this company 🙂
Stefanial
