Chartwell Green UPVC Window-design 70

Description

Chartwell Green uPVC Right-Hand Combination Casement Window — Unobstructed Left View, Complete Right Ventilation

Window design at its best is about more than filling an opening — it is about understanding how a room is used and positioning each element of the window to serve that use as directly as possible. Our Chartwell Green uPVC Right-Hand Combination Casement Window does exactly this. The large fixed lower left pane and its fixed top light companion preserve the view and the natural light on the side of the frame where they matter most, while the right-hand section concentrates all ventilation function through two independently operated opening lights that cover every height level and every airflow need the room is likely to have.

This is the mirror configuration to our left-hand combination casement — and the choice between the two is determined entirely by the room. Where the view worth keeping is on the left of the opening and the ventilation can be handled discreetly on the right, this right-hand configuration is the natural answer.

All Ventilation on the Right, All View on the Left

The right-hand section of this window is the working half of the frame — and it works at two distinct levels simultaneously. At the top, the top-hung vent opens outward from its upper edge, creating a ventilation gap at the head of the right section through which warm air rises and escapes at ceiling level. The top-hung opening action means the vent is inherently rain-resistant — the back face of the open sash deflects water away from the gap — making it safe to leave open during overcast weather, overnight, and during any activity that generates heat or moisture within the room. This is the vent that works quietly in the background, maintaining a constant gentle flow of fresh air without requiring attention or adjustment.

Below it, the side-hung casement swings fully outward on its right-hand hinge when more active ventilation is needed. Opening to its full extent, it creates a generous ventilation aperture at mid-to-lower frame height — bringing fresh air directly into the occupied zone of the room at the level where it is most immediately felt. On warm days, after cooking, or whenever the room needs a thorough air change, the open casement delivers the volume of airflow that a top vent alone cannot provide.

When both right-hand lights are open simultaneously, the ventilation covers the full height of the right section — warm stale air exits through the overhead vent while cooler fresh air enters through the lower casement, creating a natural convective loop that circulates room air more effectively than any single opening at one height level alone. The two lights operate completely independently, giving the occupant precise control over ventilation intensity at every moment of the day.

The Left Section — Where Light and View Take Priority

The left-hand section of this window is designed around a single priority — keeping the view open and the room bright, without any opening hardware cluttering the glazed area or any moving parts interrupting the outlook.

The large fixed lower left pane is the dominant visual element of the window from inside the room. Sitting below the horizontal rail and spanning the full lower height of the left section, it delivers a wide, clean view at seated and standing eye level without any handle, hinge, or vent indicator in the sightline. For rooms that face a garden, a courtyard, a planted border, or any outdoor space worth looking at, this fixed lower pane ensures the window does not compete with the view — it frames it.

Above the rail, the fixed top light on the upper left completes the left-hand section at the head of the frame. Sitting at the same height as the top-hung vent on the right, it maintains the proportional consistency of the upper frame across the full width — ensuring the horizontal rail reads as a continuous design element rather than a feature of the right section alone. The fixed top light also contributes additional natural light to the upper left of the room, brightening the ceiling and upper walls in a way that a window without an upper section cannot achieve.

Together the two left-hand fixed panes create a glazed section that is completely clear of hardware from sill to head — a generous, uninterrupted view and light source on the left side of the frame that makes the room feel larger, brighter, and more connected to the outside than a window given over to opening lights on both sides would allow.

A-Rated Performance Across Every Section

Every pane in this double glazed uPVC window is manufactured to the same rigorous thermal specification. The 70mm multi-chamber uPVC frame, 28mm argon-filled sealed units, soft coat low-E glass, and warm-edge black superspacer bar deliver a U-value of 1.3 W/m²K consistently across all four lights — A-rated performance that meets Part L Building Regulations throughout and delivers genuine, sustained reductions in heat loss in everyday use.

The horizontal rail that runs across both sections of the frame at the same height is a particularly important element thermally — a continuous frame member crossing the full internal width that lesser profiles handle poorly. Our 70mm multi-chamber construction maintains the same sealed air chamber thermal resistance at the rail as at every other section of the frame, eliminating the cold bridge and condensation strip that appear at mid-frame rails in cheaper single-chamber or thinly profiled windows.

The warm-edge black superspacer bar addresses the glass edge thermal weakness across all four sealed units simultaneously — replacing the cold aluminium spacer bar used in lower-specification units with a low-conductivity alternative that keeps the glass perimeter warm and condensation-free even in the coldest weather. The result is a window that performs consistently from corner to corner, in every section, at every temperature.

Mirror Image, Same Quality

This right-hand combination casement is the exact mirror of our left-hand configuration — same profile, same specification, same performance, same Chartwell Green finish — with the opening lights on the right and the fixed panes on the left rather than the reverse. For homeowners replacing a pair of windows on a symmetrical elevation, the two configurations can be ordered together to create a perfectly balanced pair of combination casements that ventilate from opposite sides simultaneously — bilateral ventilation at the building level rather than just the window level.

On a single opening, the choice of left-hand or right-hand configuration comes down to the specific geometry of the room — which side faces the prevailing view, which side the ventilation can occupy without interrupting the outlook, and which handing works best with the room layout and furniture arrangement. Our team is available to help with this assessment before you place your order.

The fully sculptured 70mm Chartwell Green profile gives both configurations the same refined appearance — moulded shadow lines at the mullions and rails, precise mitred corners, and the soft sage heritage finish that ties every element of the four-light frame into a single cohesive design. The Chartwell Green finish is co-extruded into the profile and carries a full 10-year profile guarantee against fading, peeling, warping, and discolouration. These uPVC casement windows require no painting, no maintenance schedule, and no upkeep beyond an occasional wipe with a damp cloth.

Security on Every Opening Light

Both the top-hung vent and the side-hung casement are independently secured with multi-point locking systems engaging at multiple points along the height and width of each opening light. Lockable push-button handles are fitted to both opening lights as standard. All four panes across the full frame are retained by internal glazing beads, preventing glass removal from the exterior on any section. Patented double-action bubble gaskets run the full perimeter of both opening lights, maintaining a consistent weathertight and draught-proof seal in all conditions — including when only one of the two right-hand lights is in use.

Specification at a Glance

• Energy Rating: A-rated | U-value 1.3 W/m²K
• Configuration: 4-light — fixed top light upper left, top-hung vent upper right, large fixed lower left pane, side-hung casement lower 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 top-hung vent and side-hung casement
• Handles: Lockable push-button handles on both opening lights
• Beading: Internal across all four panes for maximum security
• Gaskets: Patented double-action bubble gaskets on both 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. Our team is available for sizing queries, handing advice, and configuration guidance before you place your order.

When the View Is on the Left and the Ventilation Belongs on the Right

Every room has a logic to it — and the right window configuration respects that logic rather than working against it. When the view worth preserving is on the left side of the opening and the ventilation can be handled cleanly on the right, this right-hand combination casement is the window the room is asking for. Two independent opening lights on the right give you complete layered ventilation control at every height level. Two fixed panes on the left give you an unobstructed view and generous natural light with no hardware in the way. And the Chartwell Green frame ties the whole design together with a finish and profile quality that make it one of the most practically resolved and visually satisfying configurations in our entire Chartwell Green uPVC window range.