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01933 227 233


Welcome to the Astraseal website; home to one of the most prominent PVC-u and aluminium window, door and conservatory manufacturers and installers in the UK.

Below you will find a link to our Trade, Commercial and Retail websites. Visit the site relevant to your needs and learn more about our company, products and services and how we can be of service to you.

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Aerial view of the Astraseal factory

About Us

Established in 1979, Astraseal is one of the UK’s largest PVC-u and aluminium window, door and conservatory manufacturers UK. We operate under three brands – Astraseal Trade; Astraseal Commercial and Windor – each serving a different client base.

Astraseal Trade: This is a supply only service working with installers and builders across the UK. As an Astraseal trade customer you benefit from a wide product choice and the backing of a supplier committed to helping you grow your business.

Astraseal Commercial: We have an exemplary completion record, installing over 80,000 products per year, meaning you can be confident your project is in safe hands.

Windor: This is our window, door and conservatory brand aimed at the retail home improvement market. Windor carries out installations in, Milton Keynes, Bucks, Beds, Oxfordshire. Visit one of our beautiful showrooms to get inspiration for your home improvement project!

All our products are manufactured from three state-of-the-art manufacturing facilities in Wellingborough and carry full industry accreditation.