If you’ve already decided against sliding or tilt-and-turn, you’re probably here for one reason: you want a window that opens all the way. Casement windows swing open on a side hinge, like a door, and that changes how a room breathes.

This page covers what makes casement different, why it costs more than sliding UPVC, which rooms it actually suits, and where it doesn’t. For the full breakdown of every type and pricing, see our UPVC Windows and Doors guide.

What Makes a Casement Window a Casement Window

A casement window is side-hinged and opens outward, like a door on its edge. Turn the handle, and the whole sash swings out on hinges fixed to one side of the frame.

Side-Hinged, Full-Frame Opening

That’s the key difference from sliding or tilt-and-turn styles. A sliding window only ever exposes half its frame to airflow — the other half is always covered by the panel it slides behind. A casement window opens its entire frame area. When it’s fully open, there’s nothing blocking the gap. During Lahore’s pre-monsoon months, that full-frame opening is doing real work to keep a room livable without running the AC non-stop.

Why Casement Windows Cost More Than Sliding UPVC

We’d rather explain this than let you assume it’s just a markup. The price difference comes from the hardware, not the branding. Unlike a basic sliding patio door, the casement mechanism is structurally complex.

The Hardware Behind the Price

A sliding window needs rollers and a track — simple, low-part-count hardware. A casement window needs an espagnolette or multi-point locking system that engages the frame at three or more points when you turn the handle. It also requires reinforced hinges rated to hold the full sash weight open at 90 degrees without sagging. More moving parts and tighter tolerances mean more labour to fit correctly — that’s the premium you’re paying for.

For exact pricing across casement and sliding side by side, our UPVC windows guide breaks down the 2026 price list.

Best Rooms for Casement Windows in Lahore Homes

Bedrooms and Living Rooms

Casement windows earn their cost in rooms where you actually want the airflow — bedrooms, living rooms, and any space facing a garden. Full-frame ventilation matters more here than in a bathroom or a Fixed Picture Window spot where the view is the only priority.

Where Casement Isn’t the Right Fit

Because the sash swings outward, it needs clear exterior space. Tight balconies, narrow side alleys, or windows close to a boundary wall can make a full swing impractical. In those spots, we usually recommend high-quality uPVC sliders.

Casement vs Tilt-and-Turn — What’s the Real Difference?

These two get confused constantly because both are premium and both use European-style hardware. Casement gives you one mode: a full outward swing. Tilt-and-turn gives you two — tilt inward for secure ventilation or swing inward for cleaning. If you only need maximum airflow and don’t need the tilt option, casement is the more cost-effective premium choice. To maximize efficiency, we always recommend pairing these with Double Glazed Glass.

Get a Free Measurement for Your Casement Windows. Casement windows give you the fullest ventilation of any UPVC style, backed by locking hardware built to hold up over years of daily use. Ahmad Glass House provides honest quotes based on your actual site requirements.