Chartwell Green UPVC Window-desing 34

Description

Chartwell Green uPVC French Casement Window — Unobstructed Opening, Timeless Character

Few window styles carry as much character and practical appeal as the French casement — and our Chartwell Green uPVC French Casement Window brings that classic configuration to the modern home with full A-rated thermal performance, robust multi-point security, and the enduring heritage appeal of Chartwell Green uPVC.

Where a standard casement opens to one side on a single hinge, the French casement opens both ways from a central meeting stile — no fixed mullion, no central post, no obstruction. When both lights swing outward simultaneously, the entire central section of the window becomes a single wide, clear aperture. It is the window equivalent of opening a door — and in a room that faces the garden, a terrace, or an outdoor seating area, that sense of connection between inside and out is transformative.

The French Casement Difference

The central meeting stile is what defines this design and distinguishes it from every other casement configuration. Rather than a fixed structural post dividing the frame at the centre, the two casements meet edge to edge when closed — creating a clean, uninterrupted sightline across the central section of the window. When open, they swing outward in opposite directions, clearing the full width of the central opening in a single movement.

This has practical consequences beyond the visual. A wide, unobstructed opening at the centre of the window allows air to move through the room in a fundamentally different way to a side-hung casement. Rather than directing airflow to one side of the room, the central opening draws air in and lets it out across the full width simultaneously — creating a natural, even circulation that is particularly effective in kitchens, dining rooms, and open-plan spaces where cooking and warmth accumulate in the middle of the room.

The two full-height fixed panes on the outer left and right frame the French casement section on both sides, extending the glazed area of the window to its maximum and ensuring the room benefits from natural light all the way to the edges of the opening — not just through the central active section.

Full-Height Glazing, No Compromises

All four lights in this design run the full height of the frame from sill to head. There are no horizontal rails, no top lights, no fixed lower panes beneath the opening casements. Just four uninterrupted panels of full-height double glazing in a clean, sculpted Chartwell Green frame.

The effect on the room is significant. Full-height glazing reads taller and more open than any window with a horizontal rail at mid-frame level, making the space feel larger and more connected to the outside. Natural light reaches deeper into the room and falls more evenly across the interior. And from outside, the clean vertical lines of four full-height panes give the window a strong, architectural presence that carries real kerb appeal — particularly in Chartwell Green, where the sculpted profile adds depth and shadow detail that white uPVC cannot replicate.

A-Rated Performance You Can Measure

This double glazed uPVC window is built to the same rigorous thermal specification across all four panes. The 70mm multi-chamber uPVC frame, 28mm argon-filled sealed units, soft coat low-E glass, and warm-edge black superspacer bar combine to achieve a U-value of just 1.3 W/m²K — A-rated performance that exceeds Part L Building Regulations requirements and delivers genuine, measurable reductions in heat loss through a wide glazed opening.

The multi-chamber frame profile is particularly important in a French casement design because the central meeting stile — where the two opening lights meet when closed — is a potential weak point for heat loss and weather penetration in lesser windows. Our 70mm profile addresses this with a precision-engineered meeting stile that maintains the same thermal resistance and weather seal as the rest of the frame, even at the point where the two opening lights come together.

Heritage Finish, Zero Maintenance

Chartwell Green on a French casement window is a combination with deep roots in British architectural tradition. The French casement form originated in timber — the wide paired opening lights, the absence of a central post, the connection to garden and terrace — and Chartwell Green is the colour that bridges the gap between that timber heritage and the practical advantages of modern uPVC most convincingly.

On this four-light design, the colour works at every scale. From close up, the sculpted profile detail and the precisely mitred corners show the quality of the manufacturing. From the street, the balanced composition of fixed and opening lights in soft sage green gives the elevation a calm, well-considered character that increases the perceived value of the property.

The finish is integral to the uPVC profile — not painted, not foiled, not applied as a surface coat — and it is guaranteed not to fade, peel, discolour or warp for the life of the frame. Maintenance consists of nothing more than an occasional wipe, and the 10-year profile guarantee covers the profile and finish in full.

Security at the Meeting Stile and Beyond

The central meeting stile is the most security-critical point in any French casement window, and it is where our specification is most exacting. Both opening casements are secured with independent multi-point locking systems that engage at multiple points along the height of each light — not just at the handle — providing robust resistance to forced entry along the full length of both opening edges. Lockable push-button handles are fitted to both casements as standard.

The outer fixed panes are retained throughout by internal glazing beads, preventing the glass from being removed from the exterior on any section. Patented double-action bubble gaskets run the full perimeter of both French casement lights, maintaining a consistent, draught-proof and weathertight seal in all conditions — including at the central meeting stile where the two lights come together.

Specification at a Glance

• Energy Rating: A-rated | U-value 1.3 W/m²K
• Configuration: 4-light — full-height fixed pane left, twin French casements centre, full-height fixed pane right
• Frame System: 70mm multi-chamber thermally efficient uPVC
• Glazing: 28mm argon-filled units, soft coat low-E glass, warm-edge superspacer
• Locking: Multi-point locking on both central French casements
• Handles: Lockable push-button handles as standard
• Beading: Internal throughout for maximum security
• Gaskets: Patented double-action bubble gaskets
• Finish: Chartwell Green — guaranteed not to discolour, warp or peel
• Compliance: Part L Building Regulations
• Guarantee: 10-year profile guarantee

Made to Your Exact Measurements

• Frame Width: 415mm – 700mm
• Frame Height: 800mm – 2200mm

Every window is manufactured to order to your exact dimensions. Enter your measurements at checkout for a perfect made-to-measure fit. Our team is available to help with sizing or configuration questions before you place your order.

When You Want to Open the Room to the Outside

There are window designs that ventilate a room, and there are window designs that connect a room to what lies beyond it. This French casement with fixed outer panes does both — and does them simultaneously. The wide central opening clears at a single movement, the full-height glazing keeps the view unobstructed when closed, and the Chartwell Green frame gives the whole design a character and presence that genuinely enhances the property. It is the most open, most inviting, and most architecturally distinctive design in our Chartwell Green uPVC window range.