Origin Approved Installer · FENSA Registered
Origin Aluminium Windows — Buckinghamshire & Berkshire
British-engineered aluminium casement windows from Origin's Contemporary Collection. OW-70 Slimline is the 65 mm sightline tier with external flush casement detail. OW-80 Premium is the 91 mm sightline tier with internal-and-external flush casement detail, engineered for vast maximum sizes. Both systems are PAS 24 certified and available across six configuration types: casement, bay, fixed, gable, French and bi-fold window. Vitrum Solutions installs the Origin window range across Buckinghamshire, Berkshire, Oxfordshire, Surrey and Hampshire.
Origin Window Specifications
Systems
OW-70 Slimline · OW-80 Premium
Sightlines
65 mm · 91 mm
Best Uw
Across the Contemporary Collection: from 0.78 W/m²K
Configurations
Casement · Bay · Fixed · Gable · French · Bi-fold window
The 2 Origin Window Systems & Configurations
OW-70 Slimline, 65 mm sightline external flush
Origin's slimline aluminium casement window. 65 mm sightline frame, external flush detail: the sash sits flush with the outer face of the frame. Configurations: casement, bay, fixed, gable, French and bi-fold window. PAS 24 certified, made in Origin's High Wycombe factory.
OW-80 Premium, 91 mm sightline internal & external flush
Origin's premium aluminium casement window. 91 mm sightline frame with internal-and-external flush detail. The sash sits flush on both faces. Engineered for vast maximum sizes (confirmed per opening at survey stage). The premium choice on contemporary new builds and architect-led renovations where the window detail needs to read as flush glass on both elevations.
Six configuration options across both window systems
Both OW-70 and OW-80 are available across six configuration types: casement (side-hung or top-hung), bay, fixed, gable, French (double-leaf), and bi-fold window (multi-leaf folding sash). The bi-fold window is essentially a multi-leaf casement that folds and stacks, useful for serving hatches and elevations where a wider clear opening is wanted than a single casement can deliver.
Configurations: side-hung, top-hung, picture, bay, French, gable, bi-fold window
Origin's window range supports side-hung casement, top-hung casement, picture/fixed, bay, French (double-leaf), gable (raked-head) and bi-fold-window (multiple-leaf folding) configurations. The bi-fold window is essentially a multi-leaf casement that folds and stacks like a small bifold door, a useful pattern for serving hatches, kitchen passes and elevations where a wider clear opening is wanted than a single casement can deliver.
Up to 20-year Origin frame guarantee
Origin's commercial signature: a guarantee of up to 20 years on the aluminium frame. Sits alongside our own 10-year FENSA-registered, CPA insurance-backed installation guarantee. The combined cover is one of the strongest in the UK premium market.
Windows on Our Range
Origin window systems feed into our aluminium casement and flush-casement product pages. The configurator handles the system choice and the per-elevation layout.
Origin OW-80 Premium Windows in real homes
The OW-80 Premium's 91 mm sightline with internal-and-external flush casement detail brings a panoramic feel to UK residential living rooms. Two scenes plus a frame-detail close-up showing the flush sash.
Hardware: handles for the OW-70 Slimline and OW-80 Premium
Origin offers Standard Offset (Brushed Aluminium, Chrome, Gold, Satin Grey, Colour-coded) and Inline (Anthracite Grey, Brushed Aluminium, Chrome, Gold, Matt Black, Satin Grey, Silver) handles for the window range. Plus the Signature Knurled Offset variant available in six finishes.
Standard Offset Handle
The most-specified window handle. Available in Brushed Aluminium, Chrome, Gold, Satin Grey or Colour-coded to the frame.
Signature Knurled Offset
For projects where a tactile statement handle is wanted on windows. Same six finishes as the External Door range.
Get a free quote for Origin Aluminium Windows
Free no-obligation written quote. Fast response times. FENSA registered with a 10-year CPA insurance-backed guarantee. Serving Buckinghamshire, Berkshire, Oxfordshire, Surrey, Hampshire, Hertfordshire & West London.
Other Origin Systems
Beyond windows, Origin's aluminium range covers bifold doors and in-line patio sliders, all supplied and fitted by Vitrum Solutions.
Origin aluminium windows across Buckinghamshire & Berkshire
Vitrum Solutions installs Origin aluminium casement windows throughout Buckinghamshire and Berkshire, including Beaconsfield, Gerrards Cross, Amersham, Marlow, Windsor, Ascot and Maidenhead. Origin manufactures the OW-70 Slimline and OW-80 Premium at its own factory in High Wycombe, Buckinghamshire, within our service region, for short lead times on local installations. Every install is FENSA registered with a 10-year CPA insurance-backed guarantee alongside Origin's up-to-20-year frame guarantee.
Origin Windows — Frequently Asked Questions
What is the difference between OW-70 and OW-80?
Both are premium Origin aluminium casement windows from the Contemporary Collection, both PAS 24 certified, both made in Origin's High Wycombe factory. OW-70 is the Slimline tier: 65 mm sightline with external flush detail (sash sits flush on the outside face only). OW-80 is the Premium tier: 91 mm sightline with internal-and-external flush detail (sash sits flush on both faces) and engineered for vast maximum sizes. Specific dimensions and thermal performance are confirmed per opening at the survey stage.
Which Origin window configuration should I choose: casement, bay, fixed, gable, French or bi-fold window?
All six configurations are available on both OW-70 and OW-80. Side-hung casement is the standard residential opener; top-hung casement opens outward from the top edge (good for high-level ventilation). Picture/fixed is a non-opening pane for unbroken views. Bay is a 3, 4 or 5-section angled opening for traditional bay layouts. Gable is the raked-head shape for gable-end walls. French is a double-leaf opener that meets in the middle. Bi-fold window is a multi-leaf folding sash, useful for serving hatches and elevations where a wider clear opening is wanted. We confirm the right configuration at survey stage based on the opening and the architectural brief.
What U-value does an Origin window achieve?
Origin's Contemporary Collection brochure quotes whole-window U-values as low as 0.78 W/m²K across the range, comfortably exceeding the Approved Document L 1.4 W/m²K maximum for replacement windows. Specific Uw is calculated per opening based on the chosen system (OW-70 or OW-80), glazing unit, frame size and thermal spec at quote stage.
How big can an Origin window be?
Origin's Contemporary Collection brochure quotes OW-80 as engineered for 'vast maximum sizes'. Specific dimensions, configurations (casement, bay, fixed, gable, French, bi-fold window) and the wind-load assessment are confirmed at the survey stage based on the opening, the chosen system (OW-70 Slimline or OW-80 Premium) and the project's structural envelope.
Are Origin windows PAS 24 and Secured by Design?
Yes. All Contemporary Collection windows are PAS 24 certified. Some products in the Contemporary Collection achieve police-backed Secured by Design accreditation, a UK security spec recognised by Hiscox, Chubb, AIG and other premium home insurers.
Can I get Origin windows in any RAL colour?
Yes, the full RAL palette. Because both the OW-70 Slimline and OW-80 Premium use a flush-casement detail (the sash sits in the same plane as the outer frame rather than protruding), the chosen colour reads as one continuous surface. Bold dark shades and bronze anodised tones land harder on a flush window than on a traditional casement with stepped sashes. Dual-colour configurations let the interior side match a different scheme to the exterior. Powder-coated at Origin's 10-stage Bicester facility on the aluminium substrate.
Are Origin windows suitable for conservation areas?
The Origin OW-80 Premium's internal-and-external flush casement detail reads cleanly on listed-building visual approvals because there is no protruding sash on the outer face. We handle the conservation-officer pre-application correspondence at the survey stage to confirm what your local planning authority will accept.
Other Systems We Install
We supply and fit the full premium-brand glazing range across the Home Counties. Compare specifications and pricing across our brand hubs.
Cortizo
Premium Spanish aluminium
Visit Cortizohub →Schuco
German aluminium systems
Visit Schucohub →Rehau
A-rated uPVC profiles
Visit Rehauhub →Palladio
Irish monocoque composite doors
Visit Palladiohub →Gerda
Polish RC2 steel security doors, RC3 upgrade on Optima/Thermo Premium
Visit Gerdahub →Korniche
UK-made aluminium roof lanterns
Visit Kornichehub →SteelR
UK-made RC4 bespoke steel front doors
Visit SteelRhub →Quote for Origin windows?
Free quote · FENSA registered · Origin frame guarantee + 10-year CPA insurance-backed installation guarantee
Request a Free Quote
