Description
Chartwell Green uPVC Fixed and Casement Window — Uninterrupted Light, Targeted Ventilation
There are rooms in every home where the view matters as much as the ventilation. A garden-facing sitting room. A kitchen that overlooks the yard. A ground-floor bedroom with a carefully planted border just outside. For spaces like these, our Chartwell Green uPVC Fixed and Casement Window offers exactly the right balance — a wide, unobstructed fixed pane that keeps your view front and centre, paired with a right-hand section that handles all your ventilation needs across two independently operated opening lights.
It’s a design that prioritises what the room actually needs, rather than defaulting to a symmetrical layout that opens where it isn’t always necessary.
One Frame, Three Distinct Zones
The large fixed pane on the left is the dominant feature of this window. Spanning the full height of the frame with no horizontal rail breaking the view, it delivers a clean, picture-frame effect that maximises both natural light and your outlook. There are no handles, no hinges, no moving parts — just clear, thermally efficient glass held securely in a slim, sculptured Chartwell Green frame.
On the right, the window is split horizontally into two active zones. At the top, a top-hung vent opens outward from its upper edge, allowing warm stale air to escape at head height without any rain ingress — a practical, weather-safe ventilation option that can be left open throughout the day. Below it, a full-width side-hung casement swings outward to provide generous ventilation whenever you need a stronger flow of fresh air through the room.
The two right-hand opening lights work independently, giving you precise control over how much air enters the space and at what level — something a single opening casement cannot offer.
Thermal Performance Across Every Pane
This double glazed uPVC window is built to the same rigorous thermal specification throughout. 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 just 1.3 W/m²K — A-rated, Part L compliant, and genuinely effective at reducing heat loss in everyday use.
The low-E coating on the glass reflects long-wave heat radiation back into the room rather than allowing it to escape through the glazing. The argon fill in the cavity slows convective heat transfer between the panes. And the warm-edge superspacer eliminates the cold condensation-prone strip that forms along the glass edge in cheaper aluminium-spaced units. Every component earns its place in the specification.
Chartwell Green — A Finish That Lasts
The soft sage tone of Chartwell Green has become the defining heritage colour choice for uPVC windows across the UK — sitting comfortably on Victorian terraces, Edwardian semis, rural cottages, and modern new-builds with equal confidence. On this asymmetric three-light design, the colour ties the fixed and active sections together into a cohesive, considered whole.
Because the finish is co-extruded into the uPVC profile rather than applied as a surface coating, it is completely immune to the peeling, fading and discolouration that affect painted timber and lower-quality coloured frames. No repainting. No maintenance schedule. Just a clean, consistent Chartwell Green finish, year after year, backed by a 10-year profile guarantee.
The fully sculptured frame profile adds the kind of moulded depth and shadow detail that gives these uPVC casement windows a genuine joinery-quality appearance — without any of the upkeep that real joinery demands.
Security Without Compromise
Both opening lights on the right-hand section are fitted with independent multi-point locking systems and lockable push-button handles as standard. The fixed left-hand pane and all glazed sections are retained by internal glazing beads, ensuring the glass cannot be pushed or levered out from outside the property. Patented double-action bubble gaskets seal the perimeter of both opening vents tightly against wind, rain and draughts in all weather conditions.
Specification at a Glance
- Energy Rating: A-rated | U-value 1.3 W/m²K
- Configuration: 3-light — large fixed pane left, top-hung vent 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 top-hung vent and side-hung casement
- 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 precise dimensions. Simply enter your measurements at checkout for a perfect made-to-measure fit. Our team is available to help with sizing queries before you place your order.
When the View Is Part of the Room
This configuration is the natural choice when you want the window to frame your outside space rather than interrupt it. The large fixed left pane puts your garden, courtyard or street front and centre — without a horizontal rail or opening mechanism cutting across the view — while the right-hand section quietly handles all the ventilation the room needs across two independently controlled lights. It’s a window that respects the space it’s fitted in, and one of the most elegantly practical designs in our Chartwell Green uPVC window range.









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