GRAHAM HOLMES ASTRASEAL LIMITED

Established in 1979, Astraseal has grown into one of the UK's leading manufacturers, suppliers, and installers of uPVC and aluminium windows, doors, and conservatories. Operating from three manufacturing sites totalling 110,000 square feet, the company offers a comprehensive and technically advanced product range, partnering with leading systems suppliers like REHAU, Smarts, Eurocell, and Kawneer. Astraseal caters to various market segments through its specialist divisions: Astraseal Trade offers a supply-only service to installers and builders nationwide, benefiting from fast quotes, lead times, and dedicated account management.

The Commercial division specialises in full-service replacement window and door programmes for social housing and local authorities, as well as large-scale supply and installs for new build developments, successfully installing over 80,000 products annually. The Domestic division, operating as Win-Dor, serves the home improvement market with a wide array of glazing solutions. With a commitment to quality and innovation, Astraseal boasts state-of-the-art fabrication facilities, including significant investments in machinery for precision manufacturing.

They offer a comprehensive supply and fit service, handling everything from survey to installation, and provide an in-house spray facility for custom colour finishes on all glazing products. The company also has a dedicated Specialist Projects division for large-scale, high-rise building projects, supported by a team of experts including CAD technicians, architects, and structural engineers. Astraseal holds numerous industry-recognised certifications, demonstrating their commitment to excellence across all phases of their operations.