Casement windows have been a staple of British homes for centuries, evolving from simple hinged designs to the modern, energy-efficient options we install today. As one of the most popular window styles in the UK, casement windows are known for their simple operation, traditional style, and flexible ventilation. At Northwich Glass, we’ve been installing casement windows for Cheshire homeowners since 1959, and it’s great to see the style still going strong.

What is a Casement Window?
A casement window operates on a hinge system, typically opening outward like a door. The window sash (the part that opens) can be hinged on the side, top, or occasionally the bottom, allowing for various configurations. This simple yet effective design has stood the test of time.
Material Choices for Casement Windows
When choosing casement windows for your home, the material of your window frame is an important option. At Northwich Glass, we specialise in two high-quality materials for our casement windows.
uPVC Casement Windows
uPVC (unplasticised polyvinyl chloride) has become the most common material for casement windows in Britain. uPVC windows offer outstanding value while delivering excellent performance:
- Superb insulation: uPVC frames contain multiple chambers that trap air and improve thermal efficiency. Our uPVC casement windows achieve excellent energy ratings, helping to reduce energy bills.
- Low maintenance: Unlike timber frames, uPVC won’t rot, warp or need repainting. A simple wipe with soapy water is all that’s required to keep them looking fresh.
- Affordability: uPVC casement windows provide impressive performance at a more accessible price point than aluminium.
- Versatility: Available in white, woodgrain finishes, and a wide range of colours, uPVC can complement any home style.
- Durability: Quality uPVC windows can last 20-30 years with minimal maintenance, making them a sound investment.
Aluminium Casement Windows
For homeowners seeking a more premium option, aluminium casement windows offer distinct advantages:
- Slim profiles: Aluminium’s strength allows for slimmer frames and larger glass areas, maximising natural light and providing unobstructed views.
- Superior strength: Aluminium frames resist warping, cracking, and weathering.
- Exceptional longevity: Aluminium casement windows can last 30-40 years or more, offering outstanding long-term value.
- Aesthetics: The sleek, clean lines of aluminium frames suit modern architectural styles particularly well.
- Sustainability: Aluminium is 100% recyclable, making it an environmentally responsible choice for eco-conscious homeowners.
- Colour options: Available in virtually any RAL colour, aluminium windows offer unmatched customisation potential.
Both materials offer excellent energy efficiency and security, meeting or exceeding current building regulations. The choice often comes down to budget, aesthetic preference, and the specific requirements of your property.

Casement Window Configurations
Casement windows offer versatility through various configuration options:
Side Hung Casement
The most common configuration is with the sash hinged at the side. This allows for a wide opening and maximum air flow. Side hung casements are the popular choice for most rooms, offering easy cleaning and excellent ventilation.
Top Hung Casement
Hinged at the top and opening outward from the bottom, these windows allow for ventilation even during light rain. They’re ideal for bathrooms and kitchens where privacy might be important, but good ventilation is essential.
French Casement
Similar to French doors, these windows feature two side-hung sashes with no central mullion when open, creating an unobstructed opening. They provide excellent ventilation and make stunning statement windows in living areas.
Arched Top Casement
For period properties or homes seeking distinctive character, arched top casements add architectural interest while maintaining the functionality of standard casement windows.
Why Choose Northwich Glass for Your Casement Windows
When investing in new casement windows, choosing the right installer is just as important as selecting the windows themselves. With over 60 years in the business, we’ve installed thousands of casement windows across Cheshire. Our expertise ensures your installation will be completed to the highest standards.
We only supply casement windows from leading manufacturers known for their durability and performance. Our windows are available with double or triple glazing options for added insulation and to achieve excellent energy ratings, helping homeowners reduce their carbon footprint and energy bills.

Making the Right Choice for Your Home
Casement windows remain a fantastic option for UK homes, combining traditional appeal with modern performance. Whether you choose uPVC for its value and low maintenance or aluminium for its sleek appearance and slim sightlines, casement windows offer excellent energy efficiency, security, and ventilation.
We’d love for you to finish our Cheshire showroom. Here you can view and use our casement windows and check out configuration and material options.
For more information, you can call us on 01606 810 000, email us at reception@northwichglass.co.uk, or use our online contact form.
Frequently Asked Questions
How long do casement windows typically last?
uPVC casement windows generally last 20-30 years, while aluminium versions can exceed 40 years with proper care. Both materials require minimal maintenance compared to traditional timber windows.
Can casement windows be installed in any home?
Yes, casement windows are versatile enough to suit almost any property type. We’ve installed them in everything from modern new builds to period cottages across Cheshire.
Do casement windows provide good insulation?
Absolutely. Modern casement windows offer excellent energy efficiency, especially when fitted with triple glazing. Their design allows for tight seals when closed, minimising drafts and heat loss.