Flush sash windows sit level within the frame, delivering the clean lines of traditional timber window design. uPVC, aluminium and wood-effect.
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From classic white to bold contemporary shades, Malbern's casement windows are available in an extensive palette of foil-wrapped finishes and woodgrain effects. Whether you want heritage charm or a sleek modern aesthetic, there is a colour to suit your property perfectly.
Our casement windows are fitted with A-rated double glazing as standard, with argon gas-filled units that minimise heat transfer and reduce energy bills. Triple glazing is also available for maximum thermal and acoustic insulation.
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Every casement window we install features a multi-point locking system that anchors the frame at multiple points, internal glazing beads to prevent glass removal from outside, and robust hardware designed to resist forced entry.
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Casement windows have been the most popular window style in the UK for good reason. Their outward-opening design provides excellent ventilation, their versatile design suits virtually any property, and the double glazing delivers impressive thermal performance. Available in uPVC, aluminium or wood-effect, these windows combine classic design with practical performance.
At Malbern, we have been supplying and fitting casement windows since 1983. Every installation is carried out by our experienced team, so you get a window that performs beautifully from day one.
Malbern Windows was established in 1983 and is still a family business today. We pride ourselves on quality workmanship, honest advice and installations that stand the test of time.
That heritage matters when you are investing in your home. With Malbern, you are not dealing with a national call centre. You are working directly with a local team that takes pride in every window we fit and has the decades of experience to back it up.
Find answers to some of our most commonly asked questions below. If your question isn’t answered below, feel free to get in touch with our friendly team!
A casement window is hinged at the side, top or bottom and opens outward using a handle. It is the most common window style found in UK homes, valued for its ventilation, light and versatility.
Yes. Casement windows feature multi-point locking systems that secure the frame at several points simultaneously, preventing intruders from force open compared to older single-point locks.
Absolutely. Whether you choose uPVC or aluminium, our casement windows are made to measure and are available in a wide range of colours, foil finishes, woodgrain effects and hardware options to suit traditional and contemporary properties alike.
Quality uPVC casement windows are built to last 20–35 years with minimal upkeep. The frames will not rot, rust or require repainting, making them a low-maintenance, long-term investment for your home.
Modern casement windows with A-rated double glazing dramatically reduce heat loss through superior insulation and a tight perimeter seal. Upgrading from older single glazing can meaningfully lower your annual heating bills.