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UPVC Windows

Astraseal manufactures bespoke uPVC window styles for any property type, with all glazing and components produced in-house to guarantee consistent quality and performance.

Windows Solutions for Every Project

Designed to meet the needs of local authorities and new build developers, Astraseal’s uPVC windows are custom-made in-house to ensure consistent quality and reliability. Available in a wide range of designs, sizes, styles, and colours, they offer complete flexibility for any project. Manufactured with sustainability and energy-efficiency at the forefront, our advanced fabrication process delivers windows with multi-chambered profiles for improved thermal performance and bonded PCE gaskets to prevent ageing and shrinkage. The result? Windows that are secure, durable, and high-performing for years to come.

Features & Benefits

As with all our products, safety, security and longevity is paramount.

  • ENERGY SMART
    Engineered for better insulation
  • MADE TO MEASURE
    Built to your exact requirements
  • PAS24 CERTIFIED
    Meets top security standards
  • BUILT TO LAST
    Designed to resist wear + tear

Casement
Windows

Astraseal manufactures a wide range of high-performance casement windows, designed for versatility, durability, and superior thermal efficiency. Compatible with both double and triple-glazed units, our windows feature advanced multi-chambered profiles that exceed UK Building Regulation standards for energy efficiency. With a vast range of sash options and a variety of coloured and foiled finishes, our casement windows are highly adaptable, making them suitable for all types of residential and commercial projects and a modern alternative to traditional timber designs.

Flush Fit
Windows

Our Flush Fit casement windows combine the classic look of timber with the performance of modern uPVC. The sash sits level with the frame to create a sleek, seamless finish, available in side-hung, top-hung, and French styles. With excellent thermal efficiency, noise reduction, and low-maintenance durability, they are designed to perform as well as they look. Options include fully welded or mechanical-style joints, sculptured frame profiles, and a wide choice of colours.

Tilt & Turn
Windows

Our Tilt and Turn windows offer dual functionality, tilting inwards for ventilation or opening fully for easy cleaning and use as a fire escape. We also manufacture fully reversible windows, designed specifically for residential developments, multi-storey buildings, and commercial properties. Ideal for both new-build and retrofit projects, they are compatible with most architectural styles. Featuring excellent thermal efficiency, effective noise reduction, slim sightlines, and a choice of finishes, our windows deliver both performance and design flexibility.

Heritage Sash
Windows

Our Heritage Sash window system combines the traditional look of timber box sash windows with the benefits of modern uPVC. Manufactured by Astraseal to exacting standards, it features classic hardware, optional decorative horns, and a deep bottom rail for an authentic finish. Dual sashes slide in opposite directions and can be positioned anywhere, while integrated triple brush seals provide excellent draught-proofing and insulation.

Installation Image Gallery

Colour Options

Choose from a wide range of standard finishes or use our in-house spray service, offering over 150 RAL colours. Whether you need to match existing schemes or deliver a bespoke look, Astraseal provides the flexibility and consistency you need—ideal for housing developments and public sector projects where uniform quality matters.

  • Simply White
  • Cream
  • Chartwell Green
  • Elephant Grey
  • Slate Grey
  • Anthracite Grey
  • Black Brown
  • Rosewood

Why Choose Astraseal

We understand the challenges councils, housing associations, and developers face—tight budgets, strict regulations, and the need for lasting value. That’s why Astraseal’s commercial solutions are built on quality, compliance, and reliability.

  • Large-scale Project Experts
  • Everything Manufactured In-house
  • Extensive Product Range
  • Certified Surveyors Installers
  • Nationwide On-site Support
  • Over 40 Years Experience
Our Services

Commercial Downloads

We have placed all of our resources in one handy location for you to access and download when needed. Here you will find product specifications and a variety of brochures and technical documents.

View Documents

Partner With Us

Our Commercial department offers tailored solutions for every project. Simply fill in the below form and one our specialists will contact you to discuss your requirements.