● Windows / Casement Windows
Casement Windows
Casement windows are one of the most popular window styles in the UK today and they have an ‘A’ rating for levels of energy efficiency. Contact us today.
Get a QuoteIndicative price · From £450 per window supplied & fitted · Typically 4–6 weeks from survey to fit

● Overview
Casement windows are the most popular replacement window in the UK — and for good reason. Hinged at the side or top, they swing open to give you full ventilation, easy cleaning from inside, and an unrestricted view when closed. We install A+ rated uPVC, aluminium and timber-effect casements across Essex with whole-window U-values from 1.2 W/m²K, multi-point locking and a 10-year insurance-backed guarantee.
Specification
- Frame material
- uPVC, aluminium, timber-effect uPVC
- Energy rating
- A+ as standard
- U-value
- From 1.2 W/m²K (whole window)
- Chambers
- 6 or 7-chamber profile
- Glazing
- 28mm argon-filled double, triple optional
- Security
- Multi-point shootbolt locking, internal beading, key-locking handles
- Colours
- White, cream, anthracite, black, Irish oak, rosewood, chartwell green, any RAL (aluminium)
- Opening styles
- Side-hung, top-hung, fixed, tilt-only, fire escape
- Guarantee
- 10-year insurance-backed
Casement Windows
Discover our range of casement windows for your Essex home.
Casement windows are one of the most popular window styles in the UK today, and it’s easy to see why. Their classic design, practicality, and versatility make them a fantastic choice for homeowners looking to upgrade their windows while maintaining a timeless appearance.
With the option of top-hung or side-hung openings, casement windows can be adapted to suit almost any type of property. Whether you live in a modern home, a traditional semi-detached house, or a period property, casement windows offer a clean and attractive solution that blends seamlessly with the character of your home.
Another reason casement windows remain so popular is their versatility. They can be manufactured in a wide variety of sizes and configurations, allowing them to fit comfortably into almost any opening. This flexibility means they are often the first choice when homeowners are replacing older windows or improving the energy efficiency of their property.
At The Essex Window Store, we provide high-quality casement windows designed to combine style, durability, and energy efficiency for homes across Essex.
What are casement windows?
Casement windows are attached to the frame using hinges that are typically located on either the left or right side of the window. These hinges allow the window to open outward, much like a door. Depending on the design, casement windows can also be top-hung, meaning they open outward from the bottom to allow ventilation while offering protection from rain.
This style of window differs from traditional vertical sash windows, which slide up and down within the frame. Because casement windows open fully outward, they allow excellent ventilation and airflow when required.
Another advantage of casement windows is that when they are closed, they press firmly against the frame, creating a tight seal. This helps to reduce draughts and improve the overall energy efficiency of the window.
Casement windows are extremely adaptable and can be designed in single or multi-panel configurations. This allows them to be used in a wide range of spaces throughout the home, including kitchens, bedrooms, living rooms, and even bathrooms.
Because of their flexibility and clean lines, casement windows are a practical choice for both new installations and replacement windows.


How can casement windows be customised?
One of the biggest advantages of casement windows is the number of ways they can be customised to suit your home and personal style.
Glass options are a great place to start. Homeowners can choose from a variety of decorative and patterned glass designs that offer privacy while still allowing natural light into the room. Patterned glass is particularly popular for bathrooms, hallways, and ground-floor windows where privacy is important.
In addition to glass options, casement windows can also include decorative features such as leaded glass designs or Georgian bars. These elements can give your windows a more traditional or heritage appearance and are often chosen for period-style properties or homes where maintaining the original character is important.
Colour is another area where casement windows can be tailored to your property. Our casement windows are available in a wide range of attractive and long-lasting finishes. Popular modern colours include Slate Grey and Black, which create a sleek and contemporary look. For homeowners who prefer a more traditional style, we also offer woodgrain finishes such as Irish Oak and Rosewood, which replicate the natural appearance of timber while maintaining the durability of modern materials.
Whatever your preference, choosing the right colour can help your windows stand out while still complementing the overall style of your home.
Are casement windows energy efficient?
Energy efficiency is one of the most important factors homeowners consider when choosing new windows. Modern casement windows are designed with this in mind and offer excellent levels of insulation and weather protection.
Our casement windows feature high levels of weatherproofing, including watertight gaskets and advanced sealing systems. These features help prevent rain, wind, and cold air from entering your home while keeping warm air inside where it belongs.
Because casement windows close tightly against the frame, they create a strong seal that helps minimise heat loss. This improved insulation can make a noticeable difference to the comfort of your home, particularly during the colder months.
Many modern casement windows can achieve an ‘A’ rating for energy efficiency, which is one of the highest ratings available for double-glazed windows. This means they are designed to reduce heat loss and improve thermal performance, helping to keep your home warmer in winter and cooler in summer.
Improved insulation can also contribute to lower energy bills, as your heating system does not need to work as hard to maintain a comfortable temperature indoors.

How can I get a quote for casement windows?
If you’re considering casement windows for your home, our team at The Essex Window Store would be happy to help.
We offer free, no-obligation quotes and can guide you through the different styles, colours, and glazing options available. Our experienced team will assess your property, discuss your preferences, and recommend the most suitable solution for your home.
To get started, simply get in touch with our team via phone, email, or by completing our online enquiry form, and we will arrange a convenient time to discuss your requirements.
● Frequently asked
Casement Windows — questions answered
How much do casement windows cost in Essex?
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A standard uPVC casement window installed in Essex typically costs from £450. A 3-bed semi (8–10 windows) usually falls between £4,500 and £7,500 depending on size, colour and glass spec. Aluminium casements start around £750 per window. Every quote is itemised and includes survey, fitting, FENSA certification and removal of your old windows.
What's the difference between casement and flush sash windows?
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On a standard casement the opening sash sits proud of the outer frame — you can see and feel the lip. On a flush sash, the opening sash sits flush within the frame, mimicking traditional timber joinery. Thermal performance and security are identical. Casement is the cheaper, more contemporary option; flush sash suits period and characterful homes.
Are casement windows secure?
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Yes. All our casement windows come with multi-point shootbolt locking (typically 4–8 locking points depending on size), internally-beaded glazing so the glass cannot be removed from outside, and key-locking handles. PAS 24 and Secured by Design certified options are available where home insurance requires them.
How energy efficient are modern casement windows?
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All our casements are A+ rated as standard with whole-window U-values from 1.2 W/m²K. The 6 or 7-chamber frame, 28mm argon-filled double glazing with low-e coatings and warm-edge spacer bars all combine to drastically cut heat loss. Most customers notice a warmer, quieter, draught-free home within days of installation.
Can I have a casement window that opens for fire escape?
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Yes — and on certain rooms (loft conversions, ground-floor bedrooms in some new-build configurations) building regulations require it. We size and configure fire-escape casements to meet Document B clear-opening requirements (typically 450mm x 450mm minimum, 0.33m² minimum area), and the survey will flag any room that needs one.
How long do uPVC casement windows last?
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Quality uPVC casement windows typically last 25–35 years. The frame itself doesn't degrade — it's usually the seals and hardware that need attention after 15–20 years, both of which are inexpensive to refresh. Our 10-year insurance-backed guarantee covers frames, sealed units, hardware and the installation itself.
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