Origin Aluminium Windows

A premium aluminium window system designed to work across every type of opening — from standard casements to large architectural glazing. Built in the UK, made to measure, and designed to match perfectly with the full Origin range.

Two systems. One consistent finish.

Origin windows are available in two core systems — the OW70 Slimline and the OW80 Premium. These offer different balances between sightlines and performance, while maintaining the same overall quality and finish.

  • OW70 – slimmer sightlines, cleaner look
  • OW80 – more robust system with enhanced performance options

OW70 – Slimline Window

Maximum glass. Clean, modern finish.

The OW70 is Origin’s slimmest window system, designed to maximise natural light with minimal frame. With sightlines as slim as 65mm, it creates a clean and contemporary look that works across both modern and traditional properties.

It can also be specified as part of the Soho Collection, allowing you to introduce steel-look styling with horizontal bars — ideal for matching bifolds, sliders and internal doors across the same project.

  • Ultra-slim 65mm sightlines
  • Perfect for maximising light
  • Suitable for most standard openings
  • Excellent thermal performance (around 1.2 U-value)

Best for: Standard window replacements and modern extensions where aesthetics are key.

OW80 – Premium Window

More structure. More performance. More flexibility.

The OW80 is Origin’s premium window system, offering greater structural capability and additional features. It features a unique internal and external flush casement, creating a clean, symmetrical appearance across both sides of the window.

It also allows for larger sizes and more complex configurations, making it the go-to choice for architectural glazing.

  • Larger maximum sizes than OW70
  • Flush internal & external design
  • Optional Aerogel upgrade for exceptional thermal efficiency (down to ~0.9 U-value)
  • Supports complex designs like bays and gables

Best for: High-end projects, large openings, and feature glazing.

Origin Bay Windows

Add depth, light and character to a property.

Origin bay windows are manufactured using the OW80 system, allowing multiple window sections to be joined at specific angles to create a projecting structure.

Because every element is bespoke, you can control:

  • Angles between frames
  • Which sections open
  • Overall projection and size

Best for: Traditional homes, feature front elevations, and adding usable internal space.

Large Feature Windows

Floor-to-ceiling glazing with minimal interruption.

Origin windows can be used to create large fixed-frame or picture windows, allowing for expansive glazing across entire walls. The OW70 can support large openings up to around 4.8m², making it ideal for uninterrupted views.

  • Perfect for modern architecture
  • Maximises natural light
  • Works seamlessly above bifolds or sliders

Best for: Extensions, garden views, and statement glazing.

Origin Gable Windows

Architectural glazing at its best.

Gable windows are designed to follow the pitch of the roof, creating a striking triangular or apex-shaped feature. Origin gables are typically manufactured using the OW80 system for structural strength and alignment with doors below.

  • Creates dramatic architectural impact
  • Aligns with bifolds or sliders below
  • Works even on shallow roof pitches

Best for: Barn conversions, vaulted ceilings, and modern extensions.

Need help choosing between OW70 and OW80?

We’ll guide you through the differences and make sure you’re specifying the right system for your project.