Established in 1978
Trusted by commercial clients across Scotland for over 45 years of manufacturing and installation expertise.
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.
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.
Get a QuoteBespoke 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.
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.
What Our Customers Say
We are rated 5.0 onDependable, responsive, quality workmanship and dedication to getting the project completed. Their customer service is second to none. I would...
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Thankerton Builders
via Trustpilot
Ross and the team that carried out our work were fantastic from start to finish. Great communication and fantastic workmanship.
Corrie Deans
via Trustpilot
Great job, and professional company to deal with
Gary Bradburn
via Trustpilot
Very professional Very knowledgeable, delivered on time and fitted perfectly. Will certainly use them again
BSL
via Trustpilot
Great company to use, carried out work for us with no issues at all
DCF Joiners
via Trustpilot
Efficient, competitive and very professional
Paul
via Trustpilot
Dependable, responsive, quality workmanship and dedication to getting the project completed. Their customer service is second to none. I would highly recommend Century 21.
Thankerton Builders
via Trustpilot
Ross and the team that carried out our work were fantastic from start to finish.Great communication and fantastic workmanship.
Corrie Deans
via Trustpilot
Great job, and professional company to deal with
Gary Bradburn
via Trustpilot
Very professional Very knowledgeable, delivered on time and fitted perfectly. Will certainly use them again
BSL
via Trustpilot
Great company to use, carried out work for us with no issues at all
DCF Joiners
via Trustpilot
Efficient, competitive and very professional
Paul
via Trustpilot
4.7 rated on
