So, What Are Casement Windows?
If you’re replacing old windows or renovating your home, you’ve likely come across casement windows. They’re one of the most popular window styles in the UK—and for good reason. Known for their practicality, energy efficiency, and wide availability, casement windows suit everything from period houses to modern extensions.
In this guide, we explain how this window style works, where it’s best used, and what makes it a dependable choice for homeowners across Surrey and beyond.
Understanding the Casement Design
A casement window is a side-hinged unit that opens outward like a door, operated using a handle or crank. It’s typically hinged on the left or right side and can be opened fully to let in air.
This style features:
- A single sash for each opening
- A tight seal when shut, which helps with insulation
- Friction stays or arms to keep the window open
- Secure internal locks for added safety
Simple yet effective, this design has stood the test of time for both traditional and contemporary homes.
Explore Skyway’s casement windows →
Where They Work Best
These windows are highly versatile and work well in almost any room. Their ability to open wide makes them ideal for ventilation, particularly in:
- Kitchens
- Bedrooms
- Bathrooms
- Utility rooms
They’re also frequently used in hard-to-reach areas, such as above sinks or countertops, due to the ease of operation.
Key Advantages of Choosing Casement Windows
This style offers several benefits that make it appealing for homeowners looking to combine performance and practicality.
Strong Airflow
The wide outward opening allows excellent airflow and natural cooling—useful in warmer months or steamy kitchens.
High Energy Performance
When closed, the sash presses tightly against the frame to create a reliable seal. Combined with A-rated glazing, this helps keep warmth in and energy bills down. Look for products tested and rated by the BFRC for verified thermal performance.
Easy to Operate
With a single handle, the unit opens effortlessly. It’s a user-friendly option for both upper and ground-floor windows.
Increased Security
Most models include internal locking systems and multi-point locks, making them more secure than sliding or tilt windows.
Material Options and Finishes
Casement windows are available in several frame materials to match your home’s look and your maintenance preferences:
- uPVC – Affordable, low-maintenance, and a great insulator
- Aluminium – Slimline, durable, and ideal for modern homes
- Woodgrain-effect uPVC – Classic styling with none of the upkeep of real wood
They also come in a variety of finishes, from smooth white to textured anthracite grey or oak-effect tones.
Can They Be Customised?
Yes. These windows are highly adaptable. Popular configuration options include:
- Double or triple glazing
- Top or side openers
- Fixed panes
- Georgian bars or decorative features
- Trickle vents for passive airflow
They can also be combined into larger units for use in bay or bow designs.
Meeting Legal and Energy Requirements
All new or replacement windows must comply with UK Building Regulations. This includes standards for safety, ventilation, and insulation.
The best way to ensure compliance is by using a FENSA-registered installer. This ensures the work is approved without needing a separate building inspection. You’ll also receive a certificate for your records.
To confirm a registered business, use the FENSA search tool. You can also refer to LABC for additional guidance on window replacement rules.
Do They Work With Other Glazing Products?
Yes. If you’re undertaking a full home upgrade, you might also consider coordinating your windows with:
- Composite entrance doors – Secure and stylish options for the front or back of your home
- Aluminium patio sliding doors – Sleek and space-saving
- Aluminium bifold doors – Ideal for open-plan spaces and garden access
Combining products can help maintain a consistent look and may reduce overall installation costs.
Why Skyway Windows is Trusted for Window Projects in Surrey
At Skyway Windows, we help homeowners find the right window solutions for their property. We supply and install a wide range of high-performance units with:
- Multiple design options including casement, flush, bay, and sash
- A-rated glazing for thermal performance
- Reliable FENSA-compliant installation
- Clear, honest pricing with no hidden costs
- Products tailored to homes across Surrey
If you’re planning a window replacement or build project, contact us here for a free quote and expert support.
