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Casement windows, commonly selected in the UK, are windows connected to their frames by side hinges. These windows come in different materials such as uPVC, wood, and aluminum, each with distinct advantages. They can be opened using a crank, which makes them particularly suitable for locations that are difficult to access. We’d be thrilled to welcome everyone from Northamptonshire to step into our Rushden showroom and explore what we have in store.
Casement windows are the most common window type in UK homes and account for the majority of new window installations. The side-hinged design opens outward like a small door, giving excellent ventilation when open and a tight perimeter seal when closed. The design has been refined for centuries and remains the right choice for most modern installations.
We supply and fit casement windows across an 80 km radius of our Rushden showroom, with the full range of uPVC, aluminium and timber casement options available. Every window comes with double glazing as standard, multi-point locking, and a 10-year guarantee included.
A casement window is a single sash hinged at one side (or occasionally top or bottom) that opens outward. The sash sits within a frame, with the locking mechanism, hinges and weather seals built into the meeting edges. When the window is closed, the sash presses firmly against the frame to create the tight perimeter seal that gives casement windows their thermal performance.
Operation is straightforward. A handle on the inside of the sash releases the multi-point locking mechanism, and either a friction stay or a crank handle opens the window to a controlled position. The window can be locked in any partially-open position for secure ventilation, or opened fully for maximum airflow and easy cleaning of the outside glass from inside the property.
The casement design delivers several practical advantages that have kept it the dominant UK window style for over a century.
The tight perimeter seal when closed delivers good thermal performance, with modern multi-chamber profiles and quality double glazing achieving U-values from 1.2 W/m²K. The wide opening angle gives excellent ventilation, with most casement windows opening to 90 degrees or more. The simple operation works well for all age groups, with the standard handle reach suiting both adults and older children.
The internally-beaded glazing means the glass can’t be removed from outside, which is part of what makes modern casement windows secure. Multi-point hook locking engages at multiple positions around the frame perimeter when the window is closed, distributing the holding force significantly more widely than the single-point latches older casements used.
Each material brings its own characteristics to a casement window installation.
uPVC casement windows are the most popular choice in the UK because they balance thermal performance, security, low maintenance and affordable pricing. Multi-chamber profiles deliver the insulation. The powder-coated or foil-wrapped finish lasts decades without painting or maintenance beyond an occasional wipe with soapy water.
Our uPVC casement windows are built on VEKA profiles with multi-point locking, internally-beaded double glazing as standard, and the full RAL colour palette available. Wood-grain foils like golden oak, irish oak and rosewood give the timber appearance from arm’s length without the maintenance demands of real wood.
uPVC casement windows typically cost £400 to £800 per window fitted depending on size, glazing spec and colour.
Aluminium casement windows deliver the slimmest sightlines in the casement window market. The strength of aluminium handles larger sash sizes than uPVC can while keeping the visible frame thickness minimal. Best for properties wanting maximum glass area and a contemporary aesthetic that uPVC can’t quite match.
The thermal break in modern aluminium profiles prevents the cold-bridging that older aluminium suffered from. Powder-coated finishes last 25 years or more without fading, with anthracite grey, matt black and warm white being the most popular contemporary colours.
Aluminium casement windows typically cost £700 to £1,200 per window fitted.
Timber casement windows give authentic wood character for period properties, listed buildings and conservation areas where real timber is the right call. Engineered timber construction stays flat over decades while still accepting the natural stains, oils and paint finishes that real wood is known for.
Timber casement windows suit Victorian, Edwardian, 1930s and cottage properties where the original windows would have been timber and where uPVC alternatives don’t quite fit the building’s character. The maintenance trade-off is re-oiling or re-painting on exposed elevations every 5 to 7 years.
Timber casement windows typically cost £900 to £1,800 per window fitted.
Within the casement window category, several variants suit different applications.
The standard configuration. The sash hinges at one side and opens outward like a door. Suits most window openings and remains the most common casement window style across UK homes.
The sash hinges at the top and opens outward from the bottom. Often used for windows above eye level where you want ventilation without the sash sitting in the way at handle height. Also called awning windows in some technical contexts.
The sash hinges at the bottom and tilts inward from the top, used historically for secure ventilation. Less common in modern UK installations because tilt and turn designs deliver similar functionality with more flexibility.
A sealed window with no opening sash. Used where ventilation isn’t needed and you want maximum glazed area with the slimmest sightlines, common as side panels alongside an opening casement window or as decorative top lights above standard windows.
A casement variant where the sash sits level with the frame when closed, rather than sitting proud of the frame. Reproduces the traditional flush sash appearance of old timber windows in modern uPVC, aluminium or contemporary timber construction. Suits period properties and contemporary minimalist designs.
Two casement sashes side by side, often with a fixed mullion between them or with one sash flush against the other. Used for wider window openings where a single sash would be too large for the opening proportions or practical operation.
The full RAL colour palette is available across uPVC, aluminium and timber casement windows. The most-requested colours in the UK market are classic white, anthracite grey, matt black, traditional cream, chartwell green and heritage cream.
Black casement windows have grown rapidly in popularity for both contemporary new builds and period properties wanting a modern contrast against light render or red brick. Grey casement windows in anthracite or charcoal lead modern UK colour preferences.
Dual-colour finishes give you one colour outside (matching the front elevation) and a different one inside (matching the room scheme). Wood-grain foils on uPVC casement windows give the timber aesthetic without the maintenance.
Every casement window we supply comes with double glazed sealed units as standard. Modern double glazing delivers good thermal performance, cuts external noise significantly, and stops the condensation that single-glazed windows show in winter.
Triple glazed casement windows are available as an upgrade for properties on exposed elevations, near busy roads, or wanting maximum thermal performance. The extra glass pane and second air gap reduces heat loss by a further 25 to 30% compared with double glazing.
Low E glass is standard across both double and triple glazed units. The microscopic metallic coating reflects heat back into the room in winter while letting solar gain through in summer, improving thermal performance without darkening the glazing.
Soundproof acoustic-laminated glass is available for properties near busy roads, flight paths or noisy commercial neighbours.
Every casement window we supply includes multi-point hook locking, internally-beaded glazing, shoot bolts at the head and foot of the sash, and PAS 24 doorset certification available across the range.
For properties wanting the highest residential security spec, Secured by Design certification is available on the aluminium and premium uPVC casement windows. Lockable handles and removable handle keys are available across the range for households with young children or where added security is the priority.
We install casement windows across an 80 km radius of our Rushden showroom, covering Northampton, Bedford, Milton Keynes, Kettering, Cambridge, Peterborough, Rugby, Hemel Hempstead, Wellingborough, Corby, Daventry, Towcester, St Neots, Higham Ferrers, Raunds and surrounding towns.
Installation is FENSA-registered, which means the work meets current UK Building Regulations and the certification paperwork is supplied at handover. The FENSA certificate stays with the property and is often requested during a house sale.
uPVC casement windows take around 4 to 6 weeks for delivery and fitting. Aluminium casement windows take 6 to 8 weeks. Timber casement windows take 8 to 10 weeks because of the timber finishing process.
Installation is usually a one or two day job for a full-house casement window replacement, depending on the number of windows and any structural work needed around the openings. Our team handles the survey, removal of the old windows, fitting of the new frames, weather sealing and final commissioning, with all waste taken away at the end.
The operating action, sightlines and finish quality on a casement window are easiest to judge in person. Our Rushden showroom has full-size casement window samples in uPVC, aluminium and timber construction across the popular colours and configurations.
Free no-obligation quotes and free home surveys across the 80 km installation area. Most Northamptonshire homeowners receive their initial quote within 48 hours of the survey.
Casement windows are side-hinged windows that usually open outward, similar to a small door. They are operated with a handle and are one of the most popular window styles in UK homes. Casement windows are practical, versatile and suitable for many property types because they offer good ventilation, a clean appearance and strong weather sealing when closed.
Casement window prices depend on the frame material, size, glazing specification, colour and hardware options. As a guide, fitted uPVC casement windows often cost around £400 to £800 per window, aluminium casement windows around £700 to £1,200, and timber casement windows around £900 to £1,800. A home survey is the best way to get an accurate, itemised quote.
Yes. Modern casement windows can be highly energy efficient because the opening sash closes tightly against the frame, helping to reduce draughts and heat loss. When combined with quality double glazing or triple glazing, Low-E glass and warm edge spacer bars, casement windows can significantly improve the comfort and thermal performance of a home.
Yes. Casement windows can provide strong home security when they are manufactured with multi-point locking, robust hinges, internally beaded glazing and high-quality handles. Security upgrades may also be available for homeowners who want enhanced protection, particularly on ground-floor windows or more exposed elevations.
Side-hung casement windows are hinged at the side and open outward like a door. They are the most common casement window configuration in UK homes. Top-hung casement windows are hinged at the top and open outward from the bottom, making them useful for smaller openings, high-level windows, bathrooms or rooms where controlled ventilation is needed.
Yes. uPVC casement windows are a good choice for many UK homes because they offer strong value, low maintenance, good insulation and reliable everyday performance. They are available in a wide range of colours and finishes, including woodgrain effects, making them suitable for both modern and traditional properties.
Casement windows are available in uPVC, aluminium and timber. uPVC casement windows are cost-effective and low maintenance. Aluminium casement windows offer slim frames and a more contemporary appearance. Timber casement windows provide natural character and are often chosen for period homes, heritage-style projects or properties where an authentic wood finish is preferred.
Homeefe supplies and installs casement windows from our Rushden showroom for homeowners across Northamptonshire and nearby areas. Our installation area covers approximately 80 km, including Wellingborough, Northampton, Bedford, Kettering, Cambridge, Peterborough, Corby, Milton Keynes, Rugby and surrounding towns. We offer home surveys and itemised quotes for casement window projects.
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