Chartwell Green UPVC Window-design 40

Description

Chartwell Green uPVC Wide Combination Casement Window — The Most Complete Wide Opening Solution

When the wall opening spans the full width of a large room and the brief demands the highest level of natural light, ventilation flexibility, thermal efficiency, and architectural presence simultaneously, our Chartwell Green uPVC Wide Combination Casement Window answers every requirement at once. Seven carefully configured lights — combining top-hung ventilation, full-height side-hung casements, wide fixed picture panes, and fixed top lights across a single wide made-to-measure frame — represent the most comprehensively specified combination casement window in our entire Chartwell Green range.

This is the window for the room that defines the property. The wide rear extension that opens onto the main garden. The front elevation of a substantial family home where proportion, colour, and performance all carry equal weight. The open-plan kitchen and living space where every element of the window needs to work in harmony with how the room is actually used across every hour of the day.

Seven Lights, Every Function Covered

The genius of this configuration lies in how completely each section serves a distinct purpose — and how seamlessly those sections combine into a single coherent frame.

Starting from the left, the top-hung vent at the head of the outer section provides continuous background ventilation at ceiling level. Opening outward from its upper edge, it allows warm stale air to escape at height while remaining completely rain-resistant — the vent that can be left open around the clock without supervision, keeping the room fresh through cooking, sleeping, and everything between. Directly below it, the full-height side-hung casement opens wide when serious ventilation is needed — after cooking, during warm weather, or whenever a strong flow of fresh air through the room is the priority.

Moving inward, the wide central fixed picture panes occupy the dominant portion of the frame — the section the eye goes to first, the section through which the garden or landscape outside is seen most completely. Two generous fixed panes separated by a single slim mullion create a glazed centrepiece of exceptional width, with no horizontal rail interrupting the view at eye level and no opening hardware cluttering the visual field. This is where the connection between inside and out is felt most directly.

To the right of the central fixed section, a fixed top light maintains the proportional consistency of the upper frame across the full width, while the full-height side-hung casement below mirrors the opening function of the left-hand section. When both outer casements are open simultaneously, bilateral ventilation draws air evenly across the full width of the room — in from one side, out from the other — creating a thoroughness of air circulation that no single-sided opening can replicate.

The result is a window that ventilates at three independent levels — overhead via the top-hung vent, at full height via the left casement, and at full height via the right casement — while maintaining an unobstructed panoramic view through its wide central fixed section at all times.

Thermal Excellence Across Seven Panes

Achieving consistent A-rated thermal performance across a seven-light frame at this width requires a frame system that maintains its specification at every junction, every mullion, and every transition between fixed and opening sections. Our 70mm multi-chamber uPVC frame is engineered precisely for this. The sealed air chambers within the profile provide thermal resistance that is uniform across structural and glazed sections alike — including at the meeting stiles between the opening casements and the fixed frame, where lesser profiles routinely create cold bridges.

The 28mm argon-filled sealed units, soft coat low-E glass, and warm-edge black superspacer bar complete the specification across all seven panes, delivering a consistent U-value of 1.3 W/m²K throughout. This double glazed uPVC window meets Part L Building Regulations across its full width and delivers sustained reductions in heat loss through what is typically the most thermally demanding glazed opening in the property — a wide, multi-light frame that spans the primary heat-loss wall of a large room.

The soft coat low-E glass works with the seasons — reflecting heat back into the room in winter while moderating solar gain in summer. The warm-edge superspacer eliminates the cold condensation-prone strip at the glass edge that appears on aluminium-spaced units in lower temperatures. Every element of the specification is purposeful, and the combined effect is a window that performs as well at the frame edges as at the glass centre, across the full seven-pane width.

Architectural Presence at Full Scale

A seven-light window spanning a wide wall opening is an architectural statement of the first order — and the character of the Chartwell Green frame at this scale is what determines whether that statement is one of quality or merely of size. Our fully sculptured 70mm profile carries the full width of this frame with confidence. The moulded edges and shadow lines of the mullions, head, sill, and casement stiles give the frame a three-dimensional quality that accumulates across the full width — more detail, more depth, more character the wider the window becomes.

In Chartwell Green, the seven-light combination arrangement has a particular architectural authority. The rhythm of fixed and opening sections — active on the outer left, wide and passive at the centre, active again on the outer right — creates a balanced, symmetry-adjacent composition that reads as considered and resolved from any viewing distance. The soft sage tone of the frame sits against the clear glazing with the confidence of a heritage colour that has been part of quality British window design for decades — warm enough to give the elevation character, restrained enough to allow the glazing and the view beyond it to remain the dominant visual element.

The Chartwell Green finish is co-extruded into the uPVC profile — inseparable from the frame material, immune to peeling, fading, chipping and discolouration, and backed by a full 10-year profile guarantee. Across a seven-pane window at this scale, the maintenance requirement remains exactly what it is on the smallest window in our range — an occasional wipe with a damp cloth.

Complete Security Across Every Opening Light

All three opening lights — the top-hung vent and left side-hung casement on the outer left section, and the right side-hung casement on the outer right section — are independently secured with multi-point locking systems engaging at multiple points along the height of each light. Lockable push-button handles are fitted to all three opening lights as standard. All seven panes across the full width of the frame are retained by internal glazing beads, preventing glass removal from the exterior on any section — fixed or opening. Patented double-action bubble gaskets seal the full perimeter of all three opening lights, maintaining a consistent draught-proof and weathertight barrier in all conditions.

Specification at a Glance

• Energy Rating: A-rated | U-value 1.3 W/m²K
• Configuration: 7-light — top-hung vent and side-hung casement left, two wide central fixed picture panes, narrow fixed pane, fixed top light and side-hung casement 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 all three opening lights
• Handles: Lockable push-button handles as standard
• Beading: Internal across all seven panes for maximum security
• Gaskets: Patented double-action bubble gaskets on all opening lights
• 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 precise dimensions. Enter your measurements at checkout for a perfect made-to-measure fit across the full width of your opening. Our team is available to discuss sizing, configuration suitability, and specification details before you place your order.

The Most Complete Window in Our Range

Every other configuration in our Chartwell Green collection is a variation on a theme — fixed lights, opening casements, top-hung vents, combination arrangements. This seven-light wide combination casement is the configuration where all of those themes come together at once and at their fullest scale. Maximum glazing width. Maximum ventilation flexibility. Maximum thermal performance. Maximum architectural presence. And the Chartwell Green frame that ties everything together with a heritage finish that will still look exceptional on the day the next owner moves in. It is without question the most complete, most versatile, and most ambitious window in our entire Chartwell Green uPVC window range.