Origin OW70 Aluminium Window | Essex Bi-Fold Doors Company

Origin OW70 Aluminium Windows

The Origin OW-70 Contemporary Window offers slim sightlines, outstanding performance, and a sleek architectural finish, ideal for modern homes that value light, clarity, and refined detail. Expertly crafted from premium-grade aluminium, the OW-70 combines minimal design with robust strength and energy efficiency. Fully bespoke in size, configuration, and colour, this window is designed to complement every property style, providing exceptional performance with U-values as low as 1.2 W/m²K. The result is a clean, contemporary window that delivers lasting quality, comfort, and visual impact.

Key Benefits

Ultra-slim 65 mm frames and minimal sightlines for a clean, modern aesthetic and maximum light
Thermally broken aluminium system achieving U-values down to 1.2 W/m²K for exceptional energy efficiency
Available in multiple configurations including casement, bay, gable, fixed frame, and French window designs
Fully bespoke sizing and over 150 RAL colour options, with dual-colour finishes available
High-security Yale Encloser lock with bi-directional locking points for ultimate protection
Precision-engineered hinges and smooth operation, tested for long-term durability
Weather-tested seals and high-grade powder coating for reliable performance in all conditions
Designed and manufactured in the UK, backed by Origin’s up to 20-year manufacturer’s guarantee

Beaumont Hall Barns Restoration

Stonecrest Homes LTD took on the ambitious restoration of seven Grade II listed barns in Essex, transforming them into luxury family homes that perfectly blend historic character with modern living.

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Why Choose Essex Bi-Fold?

30 years Experience

Over 30 years of experience and 2,500+ successful installations across Essex and the South East

Origin Premium Partner

Recognised Origin Premium Partner – trusted for excellence in installation and service.

Extensive range

Extensive window range: bi-fold, casement, gable, picture, French, and bay styles to suit any property.

Essex Showroom

Dedicated Essex showroom where you can view and test our full range of aluminium windows

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Jeanette White

"The Bi-fold doors are amazing. The showroom has a few full set-ups which allowed me to have a good look and try it out before deciding. "

Raymond Law

"We visited Essex Bi-Fold doors and met with Clive and were impressed with there showroom and expertise. The doors we ordered look great, and the quality is excellent. "

Lester Wadden

"Essex Bi-fold Replaced our two old Kitchen roof windows with new Korniche roof lanterns. The whole experience, from initial enquiry to completion of installation, was excellent. The design of the new windows is so much more efficient, allowing more light into the kitchen."

Vicky Knight

"Wonderful experience from start to finish. We purchased Origin Bi-folds from Essex Bi-Folds August 2025. Easy to purchase, great showroom with lots of options, good price, amazing quality. "

The Bootlegger

"Great service and communication. OS-29 sliding door went in without issues. We’re really glad we found Essex Bi Fold as they’ve been on point. Loving the door quality and look. Feels very strong, door glides open with ease. 10/10."

Karen Scarsbrook

"Highly recommend this company. Everyone we dealt with from Lee in the office, his manager and the installers were extremely nice and super helpful - going the extra mile to get the finish we desired. "

Paul Marsh

"Absolutely fantastic team Clive Lee and the guys couldn't do enough for you. The difference its made to our lives is insurmountable."

Recent Projects

Real projects, real results - crafted with precision and care

Explore our latest projects featuring bi-fold doors, sliding doors, entrance doors, and windows - transforming homes with light, space, and modern design, all crafted with precision and care.

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A Modern Touch for a Countryside Classic

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Open-Plan Garden Transformation

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Beaumont Hall Barns Restoration

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High Spec Essex Development

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Chelmsford Conservatory Transformation

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Light-Filled Kitchen Extension

Questions? We’re Here to Help

Find answers about our services - or ask us anything you don’t see.

What makes the Origin OW-70 different from other aluminium windows?

The OW-70 features ultra-slim frames, just 65 mm giving you more glass and less frame for a cleaner, more modern appearance, without compromising on strength or thermal efficiency.

How energy efficient are OW-70 windows?

Very. The OW-70 system achieves U-values as low as 1.2 W/m²K, helping to reduce heat loss and maintain a comfortable, energy-efficient home year-round.

Can I customise the colour and finish of my OW-70 windows?

Yes, every Origin window is made to measure. Choose from over 150 RAL colours, including dual-colour finishes that let you coordinate your interior and exterior perfectly.

What window styles are available with the OW-70 system?

The OW-70 is available as a casement, fixed frame, bay, gable, or French window. Each can be tailored to your home’s layout and architectural style.

Are the OW-70 windows secure?

Absolutely. They feature a Yale Encloser locking system with bi-directional locking points and robust aluminium frames, giving you outstanding protection and peace of mind.

Are OW-70 windows suitable for heritage or traditional properties?

Yes, while designed with contemporary homes in mind, their clean lines and colour flexibility make them equally suited to classic or period-style properties.

What maintenance do aluminium windows require?

Minimal. The premium powder-coated finish is highly durable and weather resistant. Occasional cleaning with a soft cloth keeps them looking their best for years.

What guarantee comes with Origin OW-70 windows?

Every Origin window is backed by an up to 20-year manufacturer’s guarantee, reflecting the exceptional quality, engineering, and durability of the product.

Origin OW70 Window

Origin OW70 Aluminium Windows

Key Benefits

Beaumont Hall Barns Restoration

Why Choose Essex Bi-Fold?

Start My Quote

Recent Projects

Real projects, real results - crafted with precision and care

Questions? We’re Here to Help

Find answers about our services - or ask us anything you don’t see.

What makes the Origin OW-70 different from other aluminium windows?

How energy efficient are OW-70 windows?

Can I customise the colour and finish of my OW-70 windows?

What window styles are available with the OW-70 system?

Are the OW-70 windows secure?

Are OW-70 windows suitable for heritage or traditional properties?

What maintenance do aluminium windows require?

What guarantee comes with Origin OW-70 windows?