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Aluminium Window & Door Trade Manufacturers Since 1985

Founded in 1985, Duration Windows is a world-class trade manufacturer of premium aluminium windows and doors. Combining over 40 years of expertise with modern manufacturing, we deliver high-performance aluminium products nationwide.

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Growth & Manufacturing

Built for scale. Designed for precision.

Duration Windows has experienced sustained growth through continuous investment in manufacturing, technology, and people.

Our purpose-built facilities now span over 68,000 sq ft across 18 specialised production units. Each unit is dedicated to a specific product line—allowing for focused production, consistent quality, and efficient workflows.

By combining skilled craftsmanship with advanced machinery, we deliver reliable lead times, scalable production capacity, and strict quality control across every order.

Want to see how we do it? Book a visit and experience our manufacturing first-hand.

Duration Windows Manufacturing Facility

Our Products

Complete aluminium solutions, made to measure.

Bi-Folding Doors

Open up spaces with smooth operation and slim sightlines.

Secondary Glazing

Improve thermal performance, security, and acoustic comfort.

Steel Replacement Windows

Heritage aesthetics combined with modern performance.

Aluminium Windows & Doors

Fully bespoke systems manufactured to your specification.

Aluminium Roofs

Slim, strong designs that maximise light and space.

Every product is engineered for security, efficiency, and long-term performance.

Why Choose Duration Windows

Uncompromising Quality

Manufactured using premium materials and modern production techniques to the highest standards.

Fast Lead Times

Strong stock levels and UK production ensure efficient turnaround, with Fast Track options available.

Reliable Delivery

Our own fleet ensures dependable, on-time delivery across the UK.

Ready to work with a supplier you can rely on? Get in touch today.

Experience Our Products

See, touch, and explore our systems up close.

Duration Windows Showroom

Visit our 3,000 sq ft showroom and experience the quality of our aluminium systems first-hand.

Our knowledgeable team will guide you through the range, offering expert advice in a relaxed, pressure-free environment.

No pushy sales—just honest, professional support.

Book Your Visit

Expertise & Customer Support

Every project is different, which is why we provide tailored support from start to finish.

  • Pre-sales advice and system selection
  • Technical guidance and specification support
  • Post-sales assistance and aftercare

We also provide downloadable resources including installation guides, technical manuals, and CAD files (DWG & DXF) to support your projects.

Need help? Speak to an expert.

Industry Recognition

We are also an approved supplier to the Ministry of Justice, demonstrating our commitment to compliance, quality, and reliability.

Product Development

Innovation is at the core of everything we do. We were the first UK manufacturer to introduce aluminium bi-fold doors to the trade—and we continue to push the industry forward.

Many of our systems, including secondary glazing and aluminium roofs, are designed and developed in-house, giving us full control over performance, quality, and evolution.

Our Guarantees

We stand behind our products with a 10-year guarantee on all aluminium windows, doors, and finishes.

Integrated blinds are covered by a 5-year guarantee, ensuring long-term confidence in your investment.

Marketing Support

We support our customers with a range of marketing materials, including product imagery, brochures, and sales tools to help grow your business.

Want to grow with us? Explore our marketing resources.

News

Duration Windows latest updates, awards & announcements.

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