Casement Windows
MLI Building Products supplies quality casement windows across Worthing and West Sussex.
Our windows combine state-of-the-art technology with modern aesthetics to provide unrivalled energy efficiency with beautiful, ultra-slim sight lines. With the addition of Yale high security locking, these windows will not just look great, but they’ll enhance the security of the property, with a Yale, lifetime security guarantee.
All of our casement windows are entirely lead-free and completely recyclable, meaning they are better for the environment and meet UK and EU legislation ahead of time.
We supply a range of casement windows, all tailored to your exact requirements and measurements.
Why Choose Casement Windows from MLI?
Energy efficient
Increased energy efficiency, meaning lower energy bills and a warmer home.
Highly-secure
Increased security and protection against intruders.
Sound investment
Better soundproofing, helping keep out unwanted noise.
Casement Window Styles and Configurations
One of the reasons casement windows remain so popular is their flexibility. They can be configured as side hung, top hung or as fixed panes, and combined into multi-light arrangements to suit almost any opening. Whether you want a single opener, a pair of side-by-side casements or a larger run with fixed lights in between, the style can be tailored to the look and ventilation needs of the property.
We supply casement windows in a wide choice of colours and finishes, all made to your exact measurements. From traditional white frames for a classic look to woodgrain and contemporary shades, our range gives tradespeople and homeowners across Worthing and West Sussex the freedom to match any property style, old or new.
Explore the range of stylish and durable frame colour options below to complement your design.
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Agate Grey
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Dark Blue
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Anteak
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Cream Foil
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Chartwell Green
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Cedarwood
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Dark Grey
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Dark Red
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Irish Oak
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Rosewood
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Anthracite Grained
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Rustic Oak
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White Foil
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Winchester
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White Foil
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Swamp Oak
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Sapeli
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Oregon
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Mahogany
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Light Grey
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Ivory
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Golden Oak
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Dark Green
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Burgundy
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Black Foil
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Basalt
Get in touch now!
Contact our professional and knowledgeable team and we'll help you find the right supplies.
Casement Window Security Features
Security is one of the biggest advantages of a modern casement window. Because the sash closes tight against the frame, it creates a secure seal that is difficult to force, and our casement windows come fitted with high quality Yale multi-point locking as standard. This engages the frame at several points with a single turn of the handle, giving homeowners genuine peace of mind.
We supply casement windows built to the latest security standards, with internally glazed units so the glass cannot be removed from outside. As a trade supplier serving Worthing and West Sussex, we can specify the right locking and glazing options for each project, whether you are fitting out a single home or a larger development.
The Energy Efficiency Benefits of Casement Windows
Casement windows are among the most energy efficient styles available, thanks to the way the sash presses tightly against the frame on all sides when closed. This creates an excellent seal that reduces draughts and minimises heat loss, helping to keep warmth inside where it belongs. Combined with modern double glazing, the casement windows we supply deliver strong thermal performance that helps lower energy bills and keeps homes across West Sussex warmer and more comfortable throughout the year.
Quality Casement Windows Supplied
Casement windows combine classic appeal with modern efficiency. They’re ideal for homeowners seeking a blend of style, airflow, and energy savings. Whether used alone or paired with fixed panes for a broader view, casement windows are a versatile choice for many architectural styles.
Contact us today to discuss your requirements
Get in touch with our team today and let us help you find the best supplies for your project.
Areas we serve
We supply quality double glazing products for both homeowners and tradespeople across Worthing, Brighton, Hove, Bognor Regis and the wider West Sussex area.
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Casement Windows FAQs
A window hinged at the side or top that opens outward, the UK’s most common and versatile style. For casement windows, the best choice usually depends on the property style, opening size, frame finish, glazing specification, security requirements and the level of maintenance the customer wants. It is also worth thinking about how the window will be used day to day, especially for ventilation, cleaning access, weather protection and long-term energy performance. Choosing the right specification upfront helps the finished job look better, perform properly and avoid unnecessary product issues later.
Large openings can catch wind, and very wide spans may need reinforcing. For casement windows, the best choice usually depends on the property style, opening size, frame finish, glazing specification, security requirements and the level of maintenance the customer wants. It is also worth thinking about how the window will be used day to day, especially for ventilation, cleaning access, weather protection and long-term energy performance. Choosing the right specification upfront helps the finished job look better, perform properly and avoid unnecessary product issues later.
Common styles include casement, sliding sash, tilt & turn and flush sash. For casement windows, the best choice usually depends on the property style, opening size, frame finish, glazing specification, security requirements and the level of maintenance the customer wants. It is also worth thinking about how the window will be used day to day, especially for ventilation, cleaning access, weather protection and long-term energy performance. Choosing the right specification upfront helps the finished job look better, perform properly and avoid unnecessary product issues later.
Casements generally seal tighter for better insulation. For casement windows, the best choice usually depends on the property style, opening size, frame finish, glazing specification, security requirements and the level of maintenance the customer wants. It is also worth thinking about how the window will be used day to day, especially for ventilation, cleaning access, weather protection and long-term energy performance. Choosing the right specification upfront helps the finished job look better, perform properly and avoid unnecessary product issues later.
Mainly hinge wear or seal failure on older units – quality modern casements are reliable and low-maintenance. For casement windows, the best choice usually depends on the property style, opening size, frame finish, glazing specification, security requirements and the level of maintenance the customer wants. It is also worth thinking about how the window will be used day to day, especially for ventilation, cleaning access, weather protection and long-term energy performance. Choosing the right specification upfront helps the finished job look better, perform properly and avoid unnecessary product issues later.
Specials thanks to Loretta and Stephen
