Our factory floor in Cambridgeshire showcasing our many capabilities.

Structural Units

Located in our 30,000 sqft factory in Cambridgeshire, we are authorized suppliers of high-quality aluminium and steel window systems – such as Kawneer and Schueco. Both world-renowned window systems are synonymous with high-performing windows and façades within the commercial sector.

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As market leaders, both Kawneer and Schueco IGU’s promote sustainable living and enhance working environments beyond compare. Both are fully tested, and CMS marked to EN12150 and EN 1279 parts 2 and 3.


Used all over the world, each unit is dual sealed where we offer both polyurethane and silicone options for the secondary seal. Take a look at our previous projects for recent architectural examples.

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Technical Information

A transparent and technically sound manufacturing process is incredibly important to us at Holloseal. Have a browse through our brochures and compliancy documents to understand why we are one of the UK's leading licensed Kawneer and Scheuco manufacturers and suppliers.

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Latest Projects

With a clear vision of the perfect sealed unit firmly within our sights, our extensive technical expertise allows us to confidently exceed expectations showcased via a diverse collection of architectural glazing projects - from ground-level treatments to bespoke curtain walling.

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Our Partners we work with ....

Guardian Glass
Asahi Glass Company
Saint Gobain