Built To Spec. Built To Last.

Century 21 has been manufacturing high-quality aluminium glazing systems since 1978.

From single domestic windows to large-scale commercial curtain walling, every product leaves our facility crafted to the precise requirements of the project – no compromise, no off-the-shelf shortcuts.

Established in 1978

Trusted by commercial clients across Scotland for over 45 years of manufacturing and installation expertise.

Glazing manufactured in-house

Every system is fabricated to your exact specification - no third-party assembly, no compromise on quality.

Premium systems

We manufacture and supply only the very best systems and partner with some of the most respected names in the industry.

Scotland-wide coverage

From a single commercial door to a full curtain wall installation, we deliver across Scotland.

Keeping Your Projects on Track

We understand that reliability matters just as much as quality when it comes to trade supply.

That’s why we manufacture all our windows and doors in-house, ensuring every order is produced to exact specification and delivered on schedule, helping keep your projects on track from start to finish.

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Bespoke Fabrication For Every Project

We don’t manufacture to generic sizes. Every product is fabricated to your exact specification – whether that’s a standard residential casement or a complex commercial curtain walling system. Precision starts at the cutting stage and runs through every process.

Our in-house manufacturing capability means tighter control over quality, lead times and consistency. You get a product that fits correctly first time, finished to the standard the project demands.

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Aluminium Systems for Trade Projects

Century 21 works directly with contractors, developers and installers who need a reliable manufacturing partner behind them. We offer trade supply of fabricated aluminium windows, doors and glazing systems built to your specifications, using Smart, Cortizo and Finstral profiles. If you’re looking for a fabricator who delivers consistently – on quality and on time – talk to our team about what we can do for your pipeline.

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