Casement windows have long been a favourite in UK homes, offering a simple, elegant design paired with excellent functionality. Whether you're upgrading your windows or planning a new build, casement styles provide strong performance, good looks, and versatility for both modern and traditional properties.
This article will reveal what is a casement window are, how they operate, and why they remain one of the most popular window options for customers today.
What Are Casement Windows?
A casement window is an outward- (or inward-) opening side-hung window, controlled by a crank or handle. It is secured to the window frame using one (or more) side hinges and can have single or double sashes (in a double casement).
Casement windows differ from sliding sash windows in that they open to their full extent, providing unobstructed views and good ventilation.
Key points are:
Simple, functional design
Smooth, frictionless opening
Intimate weather-tight seal when closed
Types of Casement Windows
There are a variety of styles to meet various requirements:
Single Casement: Single sash opening left or right.
Double (French) Casement: Double sashes opening from the centre, without a central bar, which provides a wide, unobstructed gap.
Top-Hung (Awning): Hung from the top and opens out; applied in bathrooms or used as second windows.
Bottom-Hung (Hopper): Bottom-hinged and opening inwards; used from time to time in basements or small utility rooms.
Casement windows can also be combined with fixed panes or used in bay or bow window arrangements for extra flair.
Frame Materials Available
Casement windows come in a variety of different materials, each with some benefits:
uPVC: Cost-effective, low maintenance, and energy-efficient.
Timber: Ideal for older houses, with traditional character and natural insulation.
Aluminium: Clean, contemporary lines and superb durability, weather-resistant and corrosion-proof.
Composite: Merging timber (inner) with aluminium (outer) for a robust, pleasing, and weather-resistant finish.
Main Advantages of Casement Windows
- Great Ventilation
Unlike the sash type, casement types open wide in full, free-flowing maximum air flow and enhanced circulation — perfect for bedrooms, living areas, and kitchens.
- Energy Efficiency
Casement windows shut firm over the frame when they're closed, making a great seal that cuts drafts and heat loss, saving energy bills.
- Durable Security
Casement windows are usually designed with multi-point locking systems, which makes them very secure in comparison to other types of windows.
- Unobstructed, Uncumbered Views
With no horizontal bar or rail, casement windows have high, unobstructed sightlines, ideal for appreciating garden or countryside views.
- Ease of Use
Their easy handle operation makes them simple to open, even in hard locations like over kitchen sinks — convenient for homeowners at any age.
Things to Consider
Before selecting casement windows, consider the following:
Outward Opening: Check there is sufficient outside clearance if your windows open onto narrow paths, balconies, or garden ornaments.
Wind Exposure: Under wind-exposed conditions, fit restrictors or stays to stop the sash from being blown by gusts.
Window Dressings: Blinds and curtains can require precise positioning in order to fit the window opening system.
Best Places to Utilize Casement Windows
Casement windows are suitable for almost every part of the house, including:
Front-facing rooms where natural ventilation and light are imperative
Kitchens and bathrooms, due to their ease of operation and ventilation
Living rooms and bedrooms, which enormous panoramic openings make them all the cozier and more inviting
Modern constructions as well as heritage homes, particularly flush or timber framed homes ideal for heritage embellishments
Final Thoughts
Casement windows are a fashionable, practical option that combines classic charm with contemporary performance. Whether your requirement is increased ventilation, enhanced energy efficiency, or enhanced security, casement windows satisfy on all fronts.
With so many materials and designs available to choose from, they have the versatility to suit any home — sleek modern lines to cozy period restorations. As always, going for a good installer and high quality product will provide the best value for money.
If you're thinking about getting new windows, casement windows may be the solution.
