Windows

Casement Windows

The precision instrument of natural ventilation. Cliffer uPVC casement windows hinge at the side for a full, unobstructed opening — sealed so tightly when closed that they outperform fixed-light units for acoustic insulation. Available in single, paired, and bay configurations.

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Operation: Side-hung casement; top-hung awning; combination units with fixed lights
Profile depth: 60mm multi-chamber uPVC profile
Glass options: Double glazed, toughened safety glass, obscured, Georgian bar grilles
Hardware: Friction-stay hinge, espagnolette multi-point locking, choice of handle finishes
Reinforcement: 1.5mm galvanised iron bar in all frame and sash profiles
Weatherproofing: Co-extruded EPDM compression seals, Class 9A watertight corner joints

Why choose Casement Windows

100% ventilation aperture

Unlike sash windows that block half the opening, a casement swings fully open — giving you the complete frame area as usable ventilation with a single turn of the handle.

Precision friction-stay hinge

The friction stay holds the sash at any angle without a stay arm, letting you fine-tune ventilation and clean the outer face from inside the room safely.

Acoustic performance

Multi-chamber profiles and co-extruded EPDM seals compress the sash against the frame at four or more points, achieving up to 40dB sound reduction when closed.

Real Installations