Casement Windows
Side-hung casement windows — the most popular and versatile window type across Hampshire and West Sussex.
About Our Casement Windows Service
Casement windows — side-hung, top-hung or a combination of both — are the dominant replacement window choice across the UK for good practical reasons. They are straightforward to operate, easy to clean from inside, and available in an enormous range of sizes, colours and opening configurations. Multi-point locking is standard on modern casement sets, providing significantly better security than the older espagnolette bolts and singlepoint catches they replace. Aperture Windows & Doors fits casement windows across Hampshire and West Sussex in both uPVC and aluminium, including the deep-rebate and reinforced-seal specifications recommended for properties with coastal or elevated exposure.
Benefits of Our Casement Windows Service
- ✓Practical inward-cleaning design — no need to lean out to reach the outer glass
- ✓Multi-point locking throughout for improved home security
- ✓Available in uPVC and aluminium across a wide range of colours and sizes
Casement Windows — Frequently Asked Questions
The most popular bedroom casement configuration includes a top-hung opening light for overnight ventilation (which can stay open safely in most weather) combined with a side-hung main casement for full opening when needed. We can advise the most suitable layout for your property at your free survey.
Yes — Aperture can replace individual windows as well as full-house installations. Where a single window is failed or damaged, we can often match the profile colour and style to your existing frames. Contact us for a free assessment.
Casement Windows — Areas We Cover
Related Services

uPVC Windows
Low-maintenance double-glazed uPVC windows for improved warmth, security and kerb appeal.
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Aluminium Windows
Slim-profile aluminium windows with contemporary sightlines and a powder-coat finish that lasts.
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Sash Windows
Vertical sliding sash windows that replicate traditional proportions with modern glazing performance.
Learn moreReady to Start Your Casement Windows?
Book your free no-obligation survey today.


