Our Background
Astraseal is a trusted manufacturer, supplier, and installer of high-performance glazing products for the commercial sector. Established in 1979, we began as a retail fabricator before expanding to become one of the UK’s leading providers of complete glazing solutions for the commercial market. Operating nationwide, we deliver fully integrated services tailored to the needs of councils, housing associations, new-build developers, and main contractors. With the capability to act as both principal contractor and sub-contractor, we provide seamless support across a wide range of projects, from complex retrofit schemes to large-scale new build developments. Our fully trained installation teams ensure every product is fitted to the highest standards of quality, safety, and compliance, backed by industry-recognised certifications and decades of proven experience.
Trusted by
Retrofit
Astraseal specialises in retrofit schemes, providing end-to-end glazing solutions that upgrade existing buildings with compliant, energy-efficient products. Our service includes full site surveys, technical support, and project planning from our dedicated in-house department, ensuring every detail is managed with precision.
With products manufactured in-house and installed by our directly employed teams, we guarantee consistent quality, safety, and compliance throughout. Drawing on extensive experience across social housing and public sector renewal projects, Astraseal helps clients modernise their buildings, improve performance, and achieve long-term value from their investment.
Principal Contractor
We have the expertise to act as Principal Contractor on glazing projects of all sizes. We take full responsibility for planning, coordination, and delivery, ensuring full compliance with CDM regulations, Building Regulations, and health and safety standards. With a directly employed workforce and trusted supply chain, we maintain control over quality, scheduling, and site management, giving clients the assurance of a single accountable partner. From new build developments to public sector renewal projects, Astraseal delivers on time, on budget, and to the highest standards.
Sub-Contractor
Astraseal works seamlessly as a trusted Sub-Contractor, supporting main contractors with the manufacture, supply, and installation of high-performance glazing systems. Our directly employed installation teams bring the technical expertise and efficiency needed to keep projects running smoothly, safely, and in line with Building Regulations.
From large-scale new builds to retrofit schemes, we deliver reliable, high-quality installations on schedule and within budget, giving contractors confidence in a dependable, experienced partner.
New Build
Astraseal partners with developers and contractors to deliver high-performance glazing solutions for new build projects across the UK. From design support and in-house manufacturing to expert installation, we provide a fully integrated service that ensures compliance, efficiency, and quality at every stage. Our experience spans residential, commercial, education, and healthcare schemes, with the capability to manage projects of any scale. By combining technical expertise with reliable delivery, Astraseal helps clients achieve high-specification results, on time and within budget.
Certifications
As a fully certified and reliable fabricator, Astraseal upholds the highest standards in quality, compliance, and customer service. Our industry-recognised certifications demonstrate a commitment to excellence at every phase—from materials procurement and precision fabrication to expert installation. With a solid reputation and extensive experience, we are a trusted partner for delivering consistent results, technical expertise, and dependable project execution.
Why Choose Astraseal
- Large-scale Project Experts
- Everything Manufactured In-house
- Extensive Product Range
- Certified Surveyors & Installers
- Nationwide On-site Support
- Over 45 Years Experience
Integrating Safety and Sustainability in Everything We Do
Health & Safety
Health and safety isn’t just a requirement at Astraseal, it’s a core part of our company culture. We proactively maintain safe working environments through regular training, strict site protocols, and ongoing risk management. Whether on-site or in our manufacturing facility, we hold ourselves to the highest safety standards to protect our staff, partners, and clients. Click below to find out more about our full Health and Safety Policy and how we’re working to keep every project safe from start to finish.
Our PolicySustainability
At Astraseal, sustainability is central to how we operate. We focus on responsible sourcing, energy-efficient manufacturing, and recycling the majority of our uPVC and aluminium waste. Working closely with like-minded suppliers and local partners helps us reduce emissions and improve efficiency across our operations. Our commitment is underpinned by our UKAS-certified ISO 14001 accreditation, ensuring continual improvement and accountability as we deliver high-performance, environmentally responsible solutions.
Our Policy
Our Social Values
At Astraseal, we believe that success is about more than just buildings, it’s about people, communities, positive impact, and giving back in meaningful ways. We’re committed to making a real difference in places we work by supporting residents and collaborating with partners. Together, we strive to deliver value that uplifts communities and creates lasting social benefit.
Commercial Downloads
Access everything you need to plan and specify with confidence. Our resource hub includes product specifications, technical documentation, and a variety of brochures and guides, all in one place.
View DocumentsPartner With Us
Our Commercial Department offers tailored solutions for every project. Simply fill in the form and one of our specialists will contact you to discuss your requirements.