Windows

Aluminium Windows & Doors Designed to Perform

Slimline, high-performance aluminium windows that combine clean design, strong security, and long-term reliability for homes and commercial projects.

At Complete Aluminium Systems, we manufacture and supply a range of aluminium windows designed to meet the needs of modern homes and buildings.

Whether you are upgrading existing windows, planning a new build, or specifying a commercial project, our systems offer the ideal balance of style, durability, and performance. With slim frames and large glazing areas, aluminium windows are the perfect choice for creating bright, contemporary spaces.

  • Slim Sightlines – Maximise natural light with narrow frames

  • Strong & Secure – Engineered for durability, with secure locking systems

  • Low Maintenance – Aluminium will not warp, crack, or rot, making it a long-lasting

  • Thermal Efficiency – Modern systems improve insulation and energy performance

  • Long-Term Reliability – Built to withstand daily use and changing weather

Window Options

A Window Solution for Every Project

We offer a range of aluminium window styles to suit different property types and requirements.

  • Casement Windows – A versatile and widely used option, suitable for both traditional and contemporary homes.
  • Steel Replacement Windows – Designed to replicate the look of traditional steel windows, with slim profiles and a modern aluminium finish.
  • Tilt Before Turn Windows – Providing added safety and controlled ventilation, ideal for family homes.
  • Top Swing Reverse Windows – Easy to operate and clean, making them ideal for upper floors and modern developments.

All windows are available in a wide range of colours, finishes, and configurations to suit your project.

Optio Systems

Reliable, Versatile, and Cost-Effective

Our aluminium windows are manufactured using the trusted Optio system from AluK.

This system offers excellent performance, slim sightlines, and strong security, making it suitable for a wide range of residential and commercial applications.

Optio 58BW TBT HI Tilt-Before-Turn

The Optio 58BW TBT Tilt-Before-Turn window combines versatility, safety, and modern design. Its dual-function opening allows you to tilt for secure ventilation or fully open for easy cleaning and access.

With clean lines and a range of configurations, it suits both new build and refurbishment projects. Available in a variety of colours and finishes, it can be tailored to your space.

Engineered for performance, it offers excellent weather resistance, with PAS24 and Secured by Design accreditation for added security.

58BW ST Flush HI Window

The 58BW ST Flush window delivers a sleek, modern appearance with slim sightlines and a clean, flush finish. Designed for contemporary homes and refurbishment projects, it offers flexible configurations to suit a range of applications.

A double rebate enhances weather performance, ensuring reliability even in exposed conditions. Built using proven 58BW system components, it provides consistent quality and durability.

Combining strong thermal efficiency with secure performance, this system offers a practical and stylish solution for modern aluminium window design.

TRL90 Rooflight

The TRL90 rooflight is a slimline aluminium system designed to maximise natural light while maintaining a clean, modern look. Its bonded glazing and single-profile design provide strength, thermal efficiency, and a refined finish.

Available in double or triple glazing, it can be tailored to suit different project requirements, with a wide range of RAL colour options.

Ideal for residential and commercial spaces, it introduces natural light without adding height, creating brighter, more open interiors.

Built on Experience. Delivered with Precision.

With over 30 years of industry experience, we understand what our customers need from a supplier: reliability, consistency, and quality at every stage.

  • Proven Expertise – Decades of experience in aluminium fabrication and supply.

  • Approved AluK Fabricator – Working with trusted, high-performance systems used across the UK.

  • Competitive Trade Pricing – Supporting installers, developers, and contractors with cost-effective solutions.

  • Fast, Reliable Lead Times – Helping you keep your projects on schedule.

  • Technical Support – Guidance from specification through to installation.

  • South of England Coverage – Based in Hampshire, delivering across the region.

Our Reviews

Start Your Project with Confidence

Whether you are planning a new build, renovation, or commercial development, Complete Aluminium Systems provides the products, expertise, and support to help you achieve the best results.

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